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tm 249241 , revision 12.0 cortina systems ? lxt9785 and lxt9785e advanced 8-port 10/100 mbps phy transceivers datasheet the cortina systems ? lxt9785 and lxt9785e are 8-port fast ethernet phy transceivers supporting ieee 802.3 physical layer applications at 10 mbps and 100 mbps. th ese devices provide serial/source synchronous serial media independent interfaces (smii/ss-smii) and redu ced media independent interface (rmii) for switching and other independent port applications. the lxt9785 and lxt9785e are identical except for the ip telephon y features included in the lxt9785e transceiver. the lxt9785e is an enhanced version of the lxt9785 that detects data terminal equipment (dte) requiring power from the switch over a cat5 cable. the system uses the info rmation collected by the lxt9785e to apply power if the dte at the far end requires power over the cable, such as an ip telephone. each network port can provide a twisted-pair (tp) or low-voltage positive emitter coupled logic (lvpecl) interface. the twiste d-pair interface supports 10 mbps and 100 mbps (10base-t and 100base-tx) ethernet over twis ted-pair. the lvpecl interface supports 100 mbps (100base-fx) ethernet over fiber-optic media. the lxt9785/lxt9785e provides three discrete led driver outputs for each port. the devices support both half-duplex and full-duplex operation at 10 mbps and 100 mbps and require only a single 2.5 v power supply. applications product features ? enterprise switches ? ip telephony switches ? storage area networks ? multi-port network in terface cards (nics) ? eight ieee 802.3-compliant 10base-t or 100base-tx ports with integrated filters. ? 100base-fx fiber-optic capability on all ports. ? 2.5 v operation. ? low power consumption; 250 mw per port typical. ? multiple rmii or smii /ss-smii ports for independent phy port operation. ? auto mdi/mdix crossover capability. ? proprietary optimal signal processing? architecture improves snr by 3 db over ideal analog filters. ? optimized for dual-high stacked rj-45 applications. ? mdio sectionalization into 2x4 or 1x8 configurations. ? supports both auto-neg otiation systems and legacy systems without auto-negotiation capability. ? robust baseline wander correction. ? configurable through the mdio port or external control pins. ? jtag boundary scan. ? 208-pin pqfp: lxt9785hc, lxt9785ehc, lxt9785he. ? 241-ball bga: lxt9785bc, lxt9785ebc. ? 196-ball bga: lxt9785mbc (includes dte detection similar to the lxt9785e) ? dte detection for remote powering applications (lxt9785e and lxt9785mbc only). ? extended temperatur e operation of -40 o c to +85 o c (lxt9785e only).
lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 legal disclaimers information in this document is provid ed in connection with cortina systems ? products. no license, express or implied, by estoppel or othe rwise, to any intellectual property rights is granted by this document. except as provided in cortina?s terms and conditions of sale of such products, cortina assumes no liability whatsoever, and cortina disclaims any express or implied warranty relating to the sale and/or use of cortina products, including liability or warranties relating to fitness for a particular purpose, merchantability or infrin gement of any patent, copyright or other intellectual property right. cortina products are not intended for use in medical, life saving, life sustaining, critical contro l or safety systems, or in n uclear facility applications. cortina systems ? , cortina?, and the cortina earth logo are trademarks or registered trademarks of cortina systems, inc. or its subsidiaries in the us and other countries. any other product and company names are the trademarks of their respective owne rs. copyright ? 2001?2011 cortina systems, inc. all rights reserved. page 2 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers
page 3 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 contents contents 1.0 introduction................................................................................................................ .................. 19 1.1 what you will find in this document ......... ....................................................................... 19 1.2 related documents ........................................................................................................... .19 2.0 block diagram ............................................................................................................... .............. 20 3.0 pin/ball assignments and signal descriptions. ....................................................................... 21 3.1 pqfp pin assignments ...................................................................................................... 21 3.1.1 pqfp pin assignments ? rmii configur ation ....................................................... 22 3.1.2 pqfp pin assignments ? smii configur ation ....................................................... 29 3.1.3 pqfp pin assignments ? ss-smii config uration ................................................. 36 3.2 pqfp signal descriptions .................................................................................................. 43 3.2.1 signal name conventions ..................................................................................... 43 3.2.2 pqfp signal descriptions ? rmii, smi i, and ss-smii configurations.................. 43 3.3 bga23 ball assignments.................................................................................................... 58 3.3.1 rmii bga23 ball list ............................................................................................. 58 3.3.2 smii bga23 ball list ............................................................................................. 74 3.3.3 ss-smii bga23 ball list ....................................................................................... 89 3.4 bga23 signal descriptions .............................................................................................. 104 3.4.1 signal name conventions ................................................................................... 104 3.4.2 signal descriptions ? rmii, smii, and ss- smii configurations .......................... 105 3.5 bga15 ball assignments.................................................................................................. 120 3.5.1 bga15 ball list.................................................................................................... 120 3.6 bga15 signal descriptions .............................................................................................. 132 3.6.1 signal name conventions ................................................................................... 132 3.6.2 signal descriptions ? smii and ss-smi i configurations ..................................... 132 4.0 functional descripti on............... ................ ................ ................. ............ ............. ............. ........ 139 4.1 introduction ................................................................................................................ ....... 139 4.1.1 osp? architecture ............................................................................................. 139 4.1.2 comprehensive functionality .............................................................................. 140 4.1.2.1 sectionalization.................................................................................... 140 4.2 interface description s ...................................................................................................... .140 4.2.1 10/100 network interface..................................................................................... 140 4.2.1.1 twisted-pair interface .......................................................................... 141 4.2.1.2 mdi crossover (mdix)......................................................................... 142 4.2.1.3 fiber interface...................................................................................... 142 4.3 media independent interface (mii) interfaces. .................................................................. 142 4.3.1 global mii mode select ....................................................................................... 142 4.3.2 internal loopback ................................................................................................ 143 4.3.3 rmii data interface.............................................................................................. 143 4.3.4 serial media independent interface (smii) and source synchronous- serial media in- dependent interface (ss-sm ii) ............................................................................ 144 4.3.4.1 smii interface....................................................................................... 144 4.3.4.2 source synchr onous-serial media independen t interface .................. 144 4.3.5 configuration management interface ... ............................................................... 144 4.3.6 mii isolate ............................................................................................................ 144 4.3.7 mdio management interface .............................................................................. 144 4.3.8 mii sectionalization.............................................................................................. 146 4.3.9 mii interrupts........................................................................................................ 146
page 4 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 contents 4.3.10 global hardware control interface ...................................................................... 147 4.3.11 fifo initial fill values.......................................................................................... 147 4.4 operating requirements................................................................................................... 148 4.4.1 power requirements ...... ..................................................................................... 148 4.4.2 clock/sync requirements ................................................................................. 148 4.4.2.1 reference clock .................................................................................. 148 4.4.2.2 txclk signal (ss-smii only)............................................................... 148 4.4.2.3 txsync signal (smii/ss-smii)........................................................... 148 4.4.2.4 rxsync signal (ss-smii only) ... ........................................................ 148 4.4.2.5 rxclk signal (ss-smii only) ............................................................. 149 4.5 initialization .............................................................................................................. ......... 149 4.5.1 mdio control mode............................................................................................. 149 4.5.2 hardware control mode....................................................................................... 149 4.5.3 power-down mode .............................................................................................. 150 4.5.3.1 global (hardware) power down .......................................................... 151 4.5.3.2 port (software) power down ............................................................... 151 4.5.4 reset ................................................................................................................... 15 1 4.5.5 hardware configuration settings......................................................................... 151 4.6 link establishment.......................................................................................................... .. 152 4.6.1 auto-negotiation .................................................................................................. 152 4.6.1.1 base page exchange .......................................................................... 152 4.6.1.2 manual next page exchange .............................................................. 152 4.6.1.3 controlling auto-negotiation ................................................................ 153 4.6.1.4 link criteria.......................................................................................... 153 4.6.1.5 parallel detection................................................................................. 153 4.6.1.6 reliable link establishment while auto mdi/mdix is enabled in forced speed mode......................................................................................... 154 4.7 serial mii operation........................................................................................................ .. 154 4.7.1 smii reference clock.......................................................................................... 157 4.7.2 txsync pulse (smii/ss-smii)............................................................................ 157 4.7.3 transmit data stream.......................................................................................... 157 4.7.3.1 transmit enable................................................................................... 157 4.7.3.2 transmit error ...................................................................................... 157 4.7.4 receive data stream........................................................................................... 158 4.7.4.1 carrier sense....................................................................................... 158 4.7.4.2 receive data valid .............................................................................. 158 4.7.4.3 receive error ....................................................................................... 158 4.7.4.4 receive status encoding..................................................................... 158 4.7.5 collision ............................................................................................................... 15 8 4.7.6 source synchronous-serial media inde pendent interface .................................. 159 4.8 rmii operation .............................................................................................................. ... 162 4.8.1 rmii reference clock.......................................................................................... 162 4.8.2 transmit enable................................................................................................... 163 4.8.3 carrier sense & data valid.................................................................................. 163 4.8.4 receive error....................................................................................................... 163 4.8.5 out-of-band signaling ......................................................................................... 163 4.9 100 mbps operation ......................................................................................................... 1 66 4.9.1 100base-x network operations......................................................................... 166 4.9.2 100base-x protocol sublayer operations.......................................................... 166 4.9.2.1 pcs sublayer ...................................................................................... 166 4.9.3 pma sublayer...................................................................................................... 167 4.9.3.1 link ...................................................................................................... 168
page 5 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 contents 4.9.3.2 link failure override............................................................................ 169 4.9.3.3 carrier sense/data valid (rmii) .......................................................... 169 4.9.3.4 carrier sense (smii) ............................................................................ 169 4.9.3.5 receive data valid (smii)......... ........................................................... 169 4.9.3.6 twisted-pair pmd sublayer................................................................. 169 4.9.3.7 fiber pmd sublayer............................................................................. 170 4.10 10 mbps operation .......................................................................................................... .171 4.10.1 preamble handling .............................................................................................. 171 4.10.2 dribble bits .......................................................................................................... 171 4.10.3 link test .............................................................................................................. 17 1 4.10.3.1 link failure .......................................................................................... 172 4.10.4 jabber.................................................................................................................. 1 72 4.11 dte discovery process.................................................................................................... 17 2 4.11.1 definitions ............................................................................................................ 17 2 4.11.2 interaction between processor, mac, and phy.................................................. 173 4.11.3 management interface and control ...... ............................................................... 174 4.11.4 dte discovery process flow .............................................................................. 175 4.11.5 dte discovery behavior...................................................................................... 176 4.12 monitoring operations ...................................................................................................... 177 4.12.1 monitoring auto-negotiation ................................................................................ 177 4.12.2 per-port led driver functions ............................................................................ 178 4.12.3 out-of-band signaling ......................................................................................... 179 4.12.4 boundary scan interface ..................................................................................... 180 4.12.5 state machine...................................................................................................... 180 4.12.6 instruction register.............................................................................................. 180 4.12.7 boundary scan register...................................................................................... 180 4.13 cable diagnostics overview............................................................................................. 181 4.13.1 features............................................................................................................... 18 1 4.13.2 operation ............................................................................................................. 181 4.13.2.1 short and long cable testing re quirements...................................... 181 4.13.2.2 precision .............................................................................................. 181 4.13.3 implementation considerations ........................................................................... 182 4.13.4 basic implementation .......................................................................................... 182 4.14 link hold-off overview..................................................................................................... 183 4.14.1 features............................................................................................................... 18 3 4.14.2 operation ............................................................................................................. 184 5.0 application information ..................................................................................................... ....... 185 5.1 design recommendations................................................................................................ 185 5.2 general design guidelines............................................................................................... 185 5.2.1 power supply filtering. ........................................................................................ 185 5.2.2 power and ground plane layout considerations................................................ 186 5.2.2.1 chassis ground ................................................................................... 186 5.2.3 mii terminations .................................................................................................. 186 5.2.4 twisted-pair interface.......................................................................................... 186 5.2.4.1 magnetic requirements ....................................................................... 187 5.2.5 the fiber interface .............................................................................................. 187 5.2.6 led circuit........................................................................................................... 188 5.3 typical application circuits............................................................................................... 1 88 6.0 test specifications......................................................................................................... ........... 194 7.0 register definitions........................................................................................................ ........... 214
page 6 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 contents 8.0 package specific ations...................................................................................................... ....... 234 8.1 top label markings .......................................................................................................... 240 9.0 ordering information........................................................................................................ ......... 242
page 7 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 figures figures 1 block diagram ................................................................................................................. .............. 20 2 rmii 208-pin pqfp assignments ................................................................................................. 22 3 smii 208-pin pqfp assignments ................................................................................................. 29 4 ss-smii 208-pin pqfp assignments ........................................................................................... 36 5 241-ball bga23 assignments (top view)..................................................................................... 58 6 196-ball bga15 assignments (top view)................................................................................... 120 7 interface signals............................................................................................................. ............. 141 8 internal loopback ............................................................................................................. ........... 143 9 management interface read frame structure ............................................................................ 145 10 management interface write frame structure .... ........................................................................ 145 11 port address scheme.......................................................................................................... ........ 146 12 interrupt logic.............................................................................................................. ................ 147 13 initialization sequence...................................................................................................... ........... 150 14 auto-negotiation operation ................................................................................................... ...... 154 15 typical smii interface....................................................................................................... ........... 155 16 typical smii quad sectionalization................. .......................................................................... .. 156 17 100 mbps serial mii data flow ................................................................................................ ... 157 18 serial mii transmit synchron ization.......................................................................................... .. 157 19 serial mii receive synchronization................. .......................................................................... .. 158 20 typical ss-smii interface.................................................................................................... ........ 160 21 typical ss-smii quad sectionalization........... ............................................................................ 1 61 22 ss-smii transmit timing ...................................................................................................... ...... 162 23 ss-smii receive timing ....................................................................................................... ...... 162 24 rmii data flow............................................................................................................... ............. 163 25 typical rmii interface....................................................................................................... ........... 164 26 typical rmii quad sectionalization........................................................................................... .. 165 27 100base-x frame format....................................................................................................... ... 166 28 protocol sublayers ........................................................................................................... ........... 167 29 typical ip telephone system connection................................................................................... 172 30 cortina systems ? lxt9785e negotiation flow chart................................................................. 177 31 led pulse stretching ......................................................................................................... ......... 179 32 rmii programmable out-of-band signaling ................................................................................ 179 33 led circuit .................................................................................................................. ................ 188 34 power and ground supply connections ..................................................................................... 189 35 typical twisted-pair interfac e ............................................................................................... ...... 190 36 recommended lxt9785/lxt97 85e-to-3.3 v fiber transceiver inte rface circuitry................... 191 37 recommended lxt9785/lxt 9785e-to-5 v fiber transceiver inte rface circuitry...................... 192 38 on semiconductor triple pecl-to-lvpecl translator ............................................................. 193 39 smii - 100base-tx receive timi ng............... ................. ................ ................ ................ ........... 19 8 40 smii - 100base-tx transmit timi ng.............. ................. ................ ................ ................ ........... 19 9 41 smii - 100base-fx receive timi ng............... ................. ................ ................ ................ ........... 20 0 42 smii - 100base-fx transmit timi ng.............. ................. ................ ................ ................ ........... 20 0 43 smii - 10base-t receive timing ............................................................................................... 201 44 smii - 10base-t transmit timing .............................................................................................. 202 45 ss-smii - 100base-tx receive ti ming................... ................ ................ ............. ............. ........ 203 46 ss-smii - 100base-tx transmit timing............... ................ ................ ................ ............. ........ 203 47 ss-smii - 100base-fx receive ti ming................... ................ ................ ............. ............. ........ 204 48 ss-smii - 100base-fx transmit timing............... ................ ................ ................ ............. ........ 205 49 ss-smii - 10base-t receive timing ............. ................. ................ ................ ................ ........... 205 50 ss-smii - 10base-t transmit timi ng ................ ................ ................ ................ ................ ........ 206
page 8 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 figures 51 rmii - 100base-tx receive timing ............... ................. ................ ................ ................ ........... 20 7 52 rmii - 100base-tx transmit timing .............. ................. ................ ................ ................ ........... 20 7 53 rmii - 100base-fx receive timing ............... ................. ................ ................ ................ ........... 20 8 54 rmii - 100base-fx transmit timing .............. ................. ................ ................ ................ ........... 20 9 55 rmii - 10base-t receive timing ................ ................ ................. ................ ................ .............. 209 56 rmii - 10base-t transmit timing ............... ................ ................. ................ ................ .............. 210 57 auto-negotiation and fast link pulse timing ............................................................................. 211 58 fast link pulse timing ....................................................................................................... ......... 211 59 mdio write timing (mdio sourced by mac) ............................................................................. 212 60 mdio read timing (mdio source d by phy) ............................................................................. 212 61 power-up timing.............................................................................................................. ........... 213 62 reset_l recovery timing....... ................ ................ ................ ................ ................. .............. ... 213 63 phy identifier bit mapping ................................................................................................... ....... 218 64 208-pin pqfp plastic package specification ............................................................................. 235 65 241-ball bga23 package specifications - top/si de views (lxt9785bc) ................................. 236 66 241-ball bga23 package specifications - bottom view (lxt9785bc) ...................................... 237 67 196-ball bga15 package specs - top/side views (lxt9785mbc)........................................... 238 68 196-ball bga15 package ? bottom view (lxt9785mbc).......................................................... 239 69 example of top marking informat ion labeled as cortina systems, inc...................................... 240 70 example of top marking informat ion labeled as intel corporation* ........................................... 240 71 example of top marking inform ation labeled as level one commu nications* ......................... 241 72 ordering information - sample ........................ ........................................................................ .... 243
page 9 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 tables tables 1 signal type descriptions...................................................................................................... ......... 21 2 rmii pqfp pin list ............................................................................................................ ........... 23 3 smii pqfp pin list............................................................................................................ ............ 30 4 ss-smii pqfp pin list......................................................................................................... ......... 37 5 rmii signal descriptions ? pqfp ....................... ........................................................................ .. 43 6 smii/ss-smii common signal de scriptions ? pqfp.................................................................... 46 7 smii specific signal descriptions ? pqfp .................................................................................... 46 8 ss-smii specific signal descr iptions ? pqfp .............................................................................. 47 9 mdio control interface signals ? pqfp ................ ....................................................................... 48 10 signal detect ? pqfp ......................................................................................................... .......... 49 11 network interface signal descriptions ? pqfp............................................................................. 49 12 jtag test signal descriptions ? pqfp........................................................................................ 5 0 13 miscellaneous signal descriptions ? pqfp .................................................................................. 50 14 led signal descriptions ? pqfp ............................................................................................... ... 54 15 power supply signal descripti ons ? pqfp................................................................................... 55 16 unused/reserved pins ? pqfp .................................................................................................. .. 57 17 receive fifo depth considerations............................................................................................ .57 18 rmii bga23 ball list in alphanumeric order by signal name ..................................................... 59 19 rmii bga23 ball list in alphanumeric order by ball location ..................................................... 66 20 smii bga23 ball list in alphanumeric order by signal name...................................................... 74 21 smii bga23 ball list in alphanumeric order by ball location...................................................... 82 22 ss-smii bga23 ball list in alphanumeric order by signal name................................................ 89 23 ss-smii bga23 ball list in alphanumeric order by ball location................................................ 97 24 rmii signal descriptions ? bga23.................. ........................................................................... .105 25 smii/ss-smii common signal de scriptions ? bga23................................................................ 108 26 smii specific signal descriptions ? bga23 ................................................................................ 108 27 ss-smii specific signal descrip tions ? bga23 .......................................................................... 109 28 mdio control interface signals ? bga23 .............. ..................................................................... 110 29 signal detect ? bga23........................................................................................................ ........ 111 30 network interface signal descriptions ? bga23 ......................................................................... 111 31 jtag test signal descriptions ? bga23 .................................................................................... 112 32 miscellaneous signal descriptions ? bga23 .............................................................................. 112 33 led signal descriptions ? bga23 .............................................................................................. 116 34 power supply signal descripti ons ? bga23 ............................................................................... 117 35 unused/reserved pins ? bga23 ................................................................................................ 1 19 36 receive fifo depth configurations............................................................................................ 119 37 lxt9785mbc bga15 ball list in alphanumeric order by signal name .................................... 121 38 lxt9785mbc bga15 ball list in alphanumeric order by ball location (smii/ss-smii) ........... 126 39 bga15 signal descriptions ................................................................................................... ..... 132 40 mdix selection............................................................................................................... ............. 142 41 mii mode select.............................................................................................................. ............. 143 42 global hardware configuration settings ..................................................................................... 15 2 43 smii signal summary.......................................................................................................... ........ 155 44 rx status encoding bit definitions ........................................................................................... .. 159 45 ss-smii ...................................................................................................................... ................. 159 46 4b/5b coding ................................................................................................................. ............. 167 47 dte terms .................................................................................................................... .............. 173 48 next page message #5 code wo rd definitions .......................................................................... 175 49 bsr mode of operation ........................................................................................................ ...... 180 50 supported jtag instructions .................................................................................................. .... 180
page 10 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 tables 51 magnetics requirements........ ............................................................................................... ...... 187 52 absolute maximum ratings..................................................................................................... .... 194 53 operating conditions......................................................................................................... .......... 194 54 digital i/o dc electrical characteristics (vccio = 2.5 v +/- 5%) ............................................... 195 55 digital i/o dc electrical characteristics (vccio = 3.3 v +/- 5%) ............................................... 196 56 digital i/o dc electrical characteristics ? sd pins ..................................................................... 196 57 required clock characteristics ............................................................................................... .... 196 58 100base-tx transceiver characte ristics................................................................................... 197 59 100base-fx transceiver characte ristics................................................................................... 197 60 10base-t transceiver characterist ics ............... ................ ................ ................ ................ ........ 19 7 61 smii - 100base-tx receive timing parameters .. ................ ................ ................ ............. ........ 198 62 smii - 100base-tx transmit timi ng parameters ........... ................ ................ ................ ........... 199 63 smii - 100base-fx receive timing parameters .. ................ ................ ................ ............. ........ 200 64 smii - 100base-fx transmit timi ng parameters ........... ................ ................ ................ ........... 201 65 smii - 10base-t receive timing parameters....... ..................................................................... 201 66 smii-10base-t transmit timing pa rameters..... ................ ................ ................ ................ ........ 202 67 ss-smii - 100base-tx receive timing paramete rs ............... ................ ............. ............. ........ 203 68 ss-smii - 100base-tx transmit timing............... ................ ................ ................ ............. ........ 204 69 ss-smii - 100base-fx receive timing paramete rs ............... ................ ............. ............. ........ 204 70 ss-smii - 100base-fx transmit timing paramete rs .............. ................ ............. ............. ........ 205 71 ss-smii - 10base-t receive timing parameters. ................ ................ ................ ............. ........ 206 72 ss-smii - 10base-t transmit timing parameters ................ ................ ................ ............. ........ 206 73 rmii - 100base-tx receive timing parameters .. ................ ................ ................ ............. ........ 207 74 rmii - 100base-tx transmit timing parameters . ................ ................ ................ ............. ........ 208 75 rmii - 100base-fx receive timing parameters .. ................ ................ ................ ............. ........ 208 76 rmii - 100base-fx transmit timing parameters . ................ ................ ................ ............. ........ 209 77 rmii - 10base-t receive timing parameters ...... ................ ................ ................ ............. ........ 210 78 rmii - 10base-t transmit timing parameters ..... ................ ................ ................ ............. ........ 210 79 auto-negotiation and fast link pulse timing parameters............ .............................................. 211 80 mdio timing parameters................................ ....................................................................... ..... 212 81 power-up timing parameters ......................... .......................................................................... .. 213 82 reset_l recovery timing para meters ................ ................ ................ ................ ............. ........ 213 83 register set................................................................................................................. ................ 214 84 control register (address 0) ........................ ......................................................................... ...... 215 85 status register (address 1) .................................................................................................. ...... 216 86 phy identification register 1 (address 2) .... ............................................................................... 2 17 87 phy identification register 2 (address 3) .... ............................................................................... 2 17 88 auto-negotiation advertisement register (addre ss 4)................................................................ 218 89 auto-negotiation link partner base page ability register (address 5) ...................................... 219 90 auto-negotiation expansion register (address 6) ...................................................................... 220 91 auto-negotiation next page transmit register (address 7) ....................................................... 220 92 auto-negotiation link partner next page receive register (address 8).................................... 221 93 port configuration register (address 16, hex 10 ) ...................................................................... 222 94 quick status register (address 17, hex 11)............................................................................... 223 95 interrupt enable register (address 18, hex 12). ......................................................................... 224 96 interrupt status register (address 19, hex 13) ........................................................................... 225 97 led configuration register (add ress 20, hex 14)...................................................................... 226 98 receive error count register (a ddress 21, hex 15)................................................................... 228 99 rmii out-of-band signaling register (address 25 , hex 19) ....................................................... 228 100 trim enable register (address 27, hex 1b) ............................................................................... 229 101 cable diagnostics register (address 29, hex 1d )...................................................................... 231
page 11 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 tables 102 register bit map ............................................................................................................ .............. 232 103 241-ball bga23 package dimensions ................... ..................................................................... 237 104 196-ball bga15 package dimen sions (lxt9785mbc) .............................................................. 239 105 product information ......................................................................................................... ............ 242
page 12 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 revision history revision history revision 12.0 revision date: 04 november 2011 ? changed the name and description of the receive status to receive status/link change, bit 12 in table 94, quick status register (address 17, hex 11) , on page 223 . ? changed pin 1 settings for ?cfg pin settings? in table 42, global hardware configuration settings , on page 152 . revision 11.0 revision date: 16 april 2007 first release of this document from cortina systems, inc. revision number: 010 revision date: 30-mar-2006 page description page 55 modified signal description text for vccpecl in ta b l e 1 5 , power supply signal descriptions ? pqfp . page 117 modified signal description text for vccpecl in ta b l e 3 4 , power supply signal descriptions ? bga23 . page 149 added note under section 4.4.2.5, rxclk signal (ss-smii only) . page 152 modified cfg (1,2,3) settings for register bit 0.8 when set to ?1? in table 42, global hardware configuration settings . page 215 added table note 6 to register bit 0.14 (loopback) in table 84, control register (address 0) . page 218 modified table note 6 (for register bit 4.13) in table 88, auto-negotiation advertisement register (address 4) . page 223 modified note in register bi t 17.11 (collision status) in table 94, quick status register (address 17, hex 11) . page 240 added section 8.1, top label markings . page 242 modified section 9.0, ordering information ( table 105, product information and figure 72, ordering information - sample . revision number: 009 revision date: april 30, 2004 page description 1 modified 196-ball bga and dte detection bullets under product features. 43 added table note 3 (regarding linkhold) to table 13, miscellaneous signal descriptions ? pqfp , on page 50 . 88 added table note 3 (regarding linkhold) to table 32, miscellaneous signal descriptions ? bga23 , on page 112 . 53 modified table 18 ?rmii bga23 ball list in alphanumeric order by si gnal name? through table 23 ?ss-smii bga23 ball list in alphanumeric order by ball loca tion? for ball, type, and reference page corrections. 229 modified table 104 ?product informat ion? [added new packaging information]. 230 modified figure 69 ?ordering information - sample? [c hanged internal package designator for b and e, and added the gd and definition under package designator).
page 13 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 revision history revision number: 008 revision date: april 15, 2004 page description all globally added ledn_3 to bga15. 229 added figure 68 ?cortina systems ? lxt9785mbc 196-ball bga15 package ? bottom view?. revision number: 007 revision date: august 28, 2003 page description 21 modified figure 2 ?cortina systems ? lxt9785 and cortina systems ? lxt9785e rmii 208-pin pqfp assignments?. 22 modified table 2 ?cortina systems ? lxt9785/lxt9785e rmii pqfp pin list?. 26 modified figure 3 ?cortina systems ? lxt9785/lxt9785e smii 208-pin pqfp assignments?. 27 modified table 3 ?cortina systems ? lxt9785/lxt9785e smii pqfp pin list?. 31 modified figure 4 ?cortina systems ? lxt9785/lxt9785e ss-smii 208-pin pqfp assignments?. 32 modified table 4 ?cortina systems ? lxt9785/lxt9785 ss-smii pqfp pin list?. 36 modified table 5 ?cortina systems ? lxt9785/lxt9785e rmii signal descriptions ? pqfp?. 40 modified table 8 ?cortina systems ? lxt9785/lxt9785e ss-smii specif ic signal descriptions ? pqfp?. 43 modified table 13 ?cortina systems ? lxt9785/lxt9785e miscellaneous si gnal descriptions ? pqfp?. 50 modified table 16 ?cortina systems ? lxt9785/lxt9785e unused/reserved pins ? pqfp?. 51 replaced old figures 5, 6, and 7 with figure 5 ?cortina systems ? lxt9785/lxt9785e 241-ball bga23 assignments (top view)?. 52 modified table 18 ?cortina systems ? lxt9785/lxt9785e rmii bga23 ball li st in alphanumeric order by signal name?. 57 modified table 19 ?cortina systems ? lxt9785/lxt9785e rmii bga23 ball li st in alphanumeric order by ball location?. 62 modified table 20 ?cortina systems ? lxt9785/lxt9785e smii bga23 ball list in alphanumeric order by signal name?. 67 modified table 21 ?cortina systems ? lxt9785/lxt9785e smii bga23 ball list in alphanumeric order by ball location? 72 modified table 22 ?cortina systems ? lxt9785/lxt9785e ss-smii bga23 ball list in alphanumeric order by signal name?. 77 modified table 23 ?cortina systems ? lxt9785/lxt9785e ss-smii bga23 ball li st in alphanumeric order by ball location?. 82 modified table 23 ?cortina systems ? lxt9785/lxt9785e ss-smii bga23 ball li st in alphanumeric order by ball location?. 86 modified table 27 ?cortina systems ? lxt9785/lxt9785e ss-smii specific signal descriptions ? bga23?. 90 modified table 32 ?cortina systems ? lxt9785/lxt9785e miscellaneous si gnal descriptions ? bga23?. 97 modified table 35 ?cortina systems ? lxt9785/lxt9785e unused/reserved pins ? bga23?. 98 added section 3.5, ?bga15 ball assignmen ts? (including figure 6 ?cortina systems ? lxt9785mbc 196-ball bga15 assignments (top view)?, table 37 ?cortina systems ? lxt9785mbc bga15 ball list in alphanumeric order by signal name? through table 39 ?cortina systems ? lxt9785 bga15 signal descriptions?. 116 added second paragraph under section 4.1, ?introduction?. 117 added note under section 4.1.2.1, ?sectionalization?.
page 14 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 revision history 119 added note under table 40 ?cortina systems ? lxt9785/lxt9785e mdix selection?. 119 added note under section 4.3, ?media independent interface (mii) interfaces?. 120 added note to table 41 ?cortina systems ? lxt9785/lxt9785e mii mode select?. 120 modified/added text under section 4.3.2, ?internal loopback?. 121 modified text under section 4.3.6, ?mii isolate?. 121 section 4.3.7, ?mdio management interface?: added note under second paragraph. added last paragraph. 123 added note under section 4.3.8, ?mii sectionalization?. 124 added new section 4.3.11, ?fifo initial fill values? 125 modified paragraph three under section 4.4.1, ?power requirements?. 127 added notes under second and last paragraphs under section 4.5.3, ?power-down mode?. 128 modified last bullet under section 4.5. 3.1, ?global (hardware) power down?. 128 added last paragraph to section 4.5.4, ?reset?. 129 modified table 42 ?cortina systems ? lxt9785/lxt9785e global hard ware configuration settings?. 130 change heading and modified last line under sect ion 4.6.1.2, ?manual next page exchange?. 130 section 4.6.1.4, ?link criteria?: changed scrambler to descrambler in first line. modified second paragraph. added two new paragraphs. 131 added second paragraph under section 4.6.1.5, ?parallel detection?. 131 modified paragraphs under section 4.6.1.6, ?reliable li nk establishment while auto mdi/mdix is enabled in forced speed mode?. 136 changed ?1110? to ?0101? under section 4.7.4.3, ?receive error?. 141 added note under first paragraph of section 4.8, ?rmii operation? 148 changed ?asynchronously? to ?synchronously? in second pa ragraph under section 4.9.3.3, ?carrier sense/data valid (rmii)?. 148 modified last sentence in first paragraph under section 4.9.3.4, ?carrier sense (smii)?. 149 modified paragraph under section 4.9.3.6.3, ?polarity correction?. 149 added note under section 4.9.3.7, ?fiber pmd sublayer?. 149 added second paragraph under section 4.9. 3.7.1, ?far end fault indications?. 150 modified/added text under section 4.10.1, ?preamble handling?. 151 modified text under section 4.10.4, ?jabber?. 152 modified first paragraph under secti on 4.11, ?dte discovery process?. 153 modified item 1 of section 4.11.2, ?interaction between processor, mac, and phy?. 154 modified second paragraph under section 4.11.4, ?dte discovery process flow?. 155 added section 4.11.5, ?dte discovery behavior? 157 added bga15 information into first paragraph under section 4.12.2, ?per-port led driver functions?. 158 added last sentence to first paragraph and note under first paragraph under section 4.12.3, ?out-of-band signaling?. 160 added section 4.13, ?cable diagnostics overview?. revision number: 007 revision date: august 28, 2003 page description
page 15 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 revision history 161 modified/added text under section 4.13. 3, ?implementation considerations?. 162 added section 4.14, ?link hold-off overview?. 173 modified table 52 ?cortina systems ? lxt9785/lxt9785e operating conditions? 176 modified table 58 ?cortina systems ? lxt9785/lxt9785e 100base-fx transceiver characteristics? 178-195 added note to table 60 ?cortina systems ? lxt9785/lxt9785e smii - 100base-tx receive timing parameters? through table 77 ?cortina systems ? lxt9785/lxt9785e rmii - 10base-t transmit timing parameters?. 178 added table note to table 60 ?cortina systems ? lxt9785/lxt9785e smii - 100base-tx receive timing parameters?. 184 added table note to table 66 ?cortina systems ? lxt9785/lxt9785e ss-smii - 100base-tx receive timing parameters?. 190 added table note to table 72 ?cortina systems ? lxt9785/lxt9785e rmii - 100base-tx receive timing parameters? 198 added software power-down and note to table 80 ?cortina systems ? lxt9785/lxt9785e power-up timing parameters?. 199 modified paragraphs and added last paragra ph under section 7.0, ?register definitions?. 199 modified table 82 ?cortina systems ? lxt9785/lxt9785e register set?. 200 modified table 83 ?control register (address 0)?. 201 modified table 84 ?status register (address 1)?. 203 modified table 85 ?phy identification register 1 (address 2)?. 203 modified table 86 ?phy identification register 2 (address 3)? 204 modified table 87 ?auto-negotiation advertisement register (address 4)? 205 modified table 88 ?auto-negotiation link part ner base page ability register (address 5)?. 206 modified table 89 ?auto-negotiation expansion register (address 6)?. 206 modified table 90 ?auto-negotiation next page transmit register (address 7)?. 206 modified table 91 ?auto-negotiation link partner next page receive register (address 8)?. 207 modified table 92 ?port configuration register (a ddress 16, hex 10)?. (register bits 16.6, 16.4:3) 209 modified table 93 ?quick status register (address 17, hex 11)?. (register bit 17.8) 211 modified table 94 ?interrupt enable register (address 18, hex 12)?. 212 modified table 95 ?interrupt stat us register (address 19, hex 13)?. 213 modified table 96 ?led configuration register (address 20, hex 14)?. 214 modified table 97 ?receive error count register (address 21, hex 15)?. 215 modified table 98 ?rmii out-of-band si gnaling register (address 25, hex 19)?. 216 modified table 99 ?trim enable register (address 27, hex 1b)?. (register bit 27.6) 217 added table 100 ?cable diagnostics r egister (address 29, hex 1d)?. 219 modified table 101 ?cortina systems ? lxt9785/lxt9785e register bit map?. 226 added figure 102 ?cortina systems ? lxt9785mbc 196-ball bga15 package dimensions? 227 modified table and figure under section 9.0, ?ordering information?. revision number: 007 revision date: august 28, 2003 page description
page 16 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 revision history revision number: 006 (internal release) revision date: june 10, 2003 page description 1 changed "pseudo-ecl (pecl)" to "low voltage positi ve emitter coupled logic (lvpecl)" in the second paragraph, front page. 36 modified table 5 ?cortina systems ? lxt9785/lxt9785e rmii signal descriptions ? pqfp?. added last sentence to rxer0 through rxer7 signal description. 42 modified table 10 ?cortina systems ? lxt9785/lxt9785e signal detect ? pqfp?. 42 modified table 11 ?cortina systems ? lxt9785/lxt9785e network interfac e signal descriptions ? pqfp?, 43 modified table 13 ?cortina systems ? lxt9785/lxt9785e miscellaneous sign al descriptions ? pqfp?. added note to preasel signal description. 116 modified section 4.1, ?introduction?. changed "pseudo-ec l (pecl)" to "low voltage pecl (lvpecl)" in the first paragraph, second sentence. 119 replace text under section 4.2.1.3, ?fiber interface?. 120 modified section 4.3.2, ?internal loopback?. 130 modified last sentence under section 4.6.1.4, ?link criteria?. 131 modified text under section 4.6.1.5, ?p arallel detection?. added second paragraph. 136 modified text under section 4.7.4.3, ?receive error?. 145 changed "pecl" to "lvpecl in third paragraph, firs t sentence under section 4.9.1, ?100base-x network operations?. 146 modified figure 28 ?cortina systems ? lxt9785/lxt9785e protocol sublayers?. 148 modified section 4.9.3.3, ?carrier sense/data va lid (rmii)?. changed ?asynchronously to ?synchronously.? 148 modified text under section 4.9.3.4, ?carrier sens e (smii)?. revised last sentence in first paragraph. 149 modified paragraph under section 4.9.3.6.3, ?polarity correction?. 149 replaced text under section 4.9.3.7, ?fiber pmd sublayer?. 150 modified section 4.10.1, ?preamble handling?. added text to last paragraph. 151 modified first sentence under section 4.10.4, ?jabber?. 152 modified first paragraph of section 4.11, ?dte discovery process?. 153 modified item 1 of section 4.11.2, ?interaction between processor, mac, and phy?. 158 modified section 4.12.3, ?out-of-band signal ing?. added sentence to end of first paragraph. 166 replaced text under section 5.2.5, ?the fiber interface?. 170 replaced figure 36 ?recommended cortina systems ? lxt9785/lxt9785e-to-3.3 v fiber transceiver interface circuitry?. 171 replaced figure 37 ?recommended cortina systems ? lxt9785/lxt9785e-to-5 v fiber transceiver interface circuitry?. 173 modified table 52 ?cortina systems ? lxt9785/lxt9785e operating conditi ons? (rolled in from spec update). 174 modified table 53 ?cortina systems ? lxt9785/lxt9785e digital i/o dc electric al characteristics (vccio = 2.5 v +/- 5%)?. 175 modified table 54 ?cortina systems ? lxt9785/lxt9785e digital i/o dc electric al characteristics (vccio = 3.3 v +/- 5%)?. 175 added table 55 ?cortina systems ? lxt9785/lxt9785e digital i/o dc electr ical characteristics ? sd pins?. 176 modified table 58 ?cortina systems ? lxt9785/lxt9785e 100base-fx transceiver characteristics?. 200 modified table 83 ?control register (address 0)?. 201 modified table 84 ?status register (address 1)?.
page 17 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 revision history 204 modified table 87 ?auto-negotiation advertisement register (address 4)?. 205 modified table 88 ?auto-negotiation link part ner base page ability register (address 5)?. 207 modified table 91 ?auto-negotiation link partner next page receive register (address 8)?. 207 modified table 92 ?port configuration register (address 16, hex 10)?. 209 modified table 93 ?quick status register (address 17, hex 11)?. 211 modified table 94 ?interrupt enable register (address 18, hex 12)? (rolled in from spec update) 212 modified table 95 ?interrupt status register (addres s 19, hex 13)?. changed all references of ro/sc to r/lh. 214 modified table 97 ?receive error count register (address 21, hex 15)?. 215 modified table 98 ?rmii out-of-band signaling register (address 25, hex 19)?. added note to register bit 25.0. 216 modified table 99 ?trim enable register (address 27, hex 1b)?. 227 modified table 103 ?product information?. revision number: 005 revision date: january 2002 page description 1 added bullet to product features 49 modified table 12 ?cortina systems ? lxt9785/lxt9785e miscellaneous sign al descriptions? (added fifosel1 and fifosel0) 70 added section 2.6.1.6, ?reliable link establishment while auto mdi/mdix is enabled in forced speed mode? 109 modified figure 38 ?recommended cortina systems ? lxt9785/lxt9785e-to-3.3 v fiber transceiver interface circuitry? 110 added figure 39 ?recommended cortina systems ? lxt9785/lxt9785e-to-5 v fiber transceiver interface circuitry? 111 added figure 40 ?on semiconductor triple pecl-to-lvpecl translator? 112 modified table 28 ?absolute maximum ratings? 112 modified table 29 ?operating conditions? 114 modified table 31 ?digital i/o dc electrical characterist ics (vccio = 3.3 v +/- 5%)?(output low voltage sd pins - max) 129 modified figure 53 ?rmii - 100base-tx receive timi ng? and table 49 ?rmii - 100base-tx receive timing parameters? 131 modified figure 55 ?rmii - 100base-fx receive timi ng? and table 51 ?rmii - 100base-fx receive timing parameters? 133 modified figure 57 ?rmii - 10base-t receive timing? and table 53 ?rmii - 10base-t receive timing parameters? 146 modified table 69 ?port configuration register (address 16, hex 10)? (bits 16.5 and 16.6) 148 modified table 71 ?interrupt enable register (address 18, hex 12)? 168 added product ordering table and diagram. revision number: 006 (internal release) revision date: june 10, 2003 page description
page 18 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 revision history revision number: 003 revision date: april 2001 page description 1 modified and added new language to front page. 61 reset: modified language in first paragraph. 85 added new section on dte discovery. 93 supported jtag instructions table: replaced long hit streams with hex. 97 led circuit: modified paragraph language. 97 led circuit diagram: modified diagram. 99 replaced typical fiber interface diagram. 102 required clock characteristics table: replaced sm ii input frequency and rmii input frequency symbol with ?f?. 122 auto-negotiation and fast link pulse timing parameters: flp burst width under typ = 2. 126 control register table: modified table and table notes. 128 phy identification register 2 (address 3): modified table. 128 phy identifier bit mapping: modified diagram. 131 auto-negotiation expansion: modified table and table notes. 133 port configuration register table: modified table and table notes. 140 trim enable register: modified table (dte discovery). 141 modified register bit map table.
page 19 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 1.0 introduction 1.0 introduction this document contains information on the cortina systems ? {doc:productname:long}. 1.1 what you will find in this document this document contains the following sections: ? section 2.0, block diagram , on page 20 ? section 3.0, pin/ball assignments and signal descriptions, on page 21 this section contains pin/ball assignments and signal descriptions for the following: ? section 3.1, pqfp pin assignments, on page 21 ? section 3.2, pqfp signal descriptions , on page 43 ? section 3.3, bga23 ball assignments , on page 58 ? section 3.4, bga23 signal descriptions , on page 104 ? section 3.5, bga15 ball assignments , on page 120 ? section 3.6, bga15 signal descriptions , on page 132 ? section 4.0, functional description , on page 139 ? section 5.0, application information , on page 185 ? section 6.0, test specifications , on page 194 ? section 7.0, register definitions , on page 214 ? section 8.0, package specifications , on page 234 ? section 9.0, ordering information , on page 242 1.2 related documents document document number cortina systems ? lxt9785/lxt9785e design and layout guide 249509 cortina systems ? lxt9785/lxt9785e specification update 249357 cortina systems ? lxt9785/lxt9785e 100base-fx fiber optic transceivers: connecting a pecl/lvpecl interface 250781 ip telephony and dte discovery using cortina systems ? ethernet phys 249611
page 20 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 2.0 block diagram 2.0 block diagram figure 1 provides the lxt9785/lxt9785e block diagram. figure 1 block diagram decoder & descrambler + - + - serial to parallel converter scrambler & encoder txdata n parallel/serial converter carrier sense data valid error detect rxdata n auto negotiation adaptive eq with bl wander cancellation slicer manchester decoder pulse shaper manchester encoder 10 100 10 100 media select port 0 port 1 port 2 port 3 management / mode select logic & led drivers per-port functions tp driver tp / fiber out add_[4:0] mdio mdc mdint_l port 4 port 5 8-port global functions tx pcs mgmt counters ecl driver tpfon n tpfop n tpfin n tpfip n pwrdn refclk sync (smii only) fiber select n register set register set clock generator clock generator + - 100tx + - 100fx + - 10bt tp / fiber in port 6 port 7 port led drivers led n_ [3:1]_l 3 rx pcs reset_l 2 2 2 rmii/smii contr b3368-01
page 21 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.0 pin/ball assi gnments and signal descriptions 3.0 pin/ball assignments an d signal descriptions 3.1 pqfp pin assignments the following sections show pqfp pin assignments and signal descriptions: ? section 3.1.1, pqfp pin assignments ? rmii configuration, on page 22 ? section 3.1.2, pqfp pin assignments ? smii configuration, on page 29 ? section 3.1.3, pqfp pin assignments ? ss-smii configuration, on page 36 table 1 lists the acronyms and desc riptions for signal types. table 1 signal type descriptions acronym description ai analog input ao analog output i input o output od open drain output st schmitt triggered input ts three-state-able output sl slew-rate limited output ip weak internal pull-up id weak internal pull-down
page 22 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 3.1.1 pqfp pin assignments ? rmii configuration figure 2 and ta b l e 2 , rmii pqfp pin list, on page 23 provide lxt9785/lxt9785e rmii pqfp pin assignments. figure 2 rmii 208-pin pqfp assignments crs_dv6 ..... 1 rxer6/linkhold..2 txen6 ..... 3 txdata6_0 ..... 4 txdata6_1 ..... 5 refclk1 ..... 6 rxdata5_1 ..... 7 rxdata5_0 ..... 8 gndio ..... 9 crs_dv5 ..... 10 rxer5/fifosel1.. 11 txen5 ..... 12 txdata5_0 ..... 13 txdata5_1 ..... 14 rxdata4_1 ..... 15 rxdata4_0 ..... 16 crs_dv4 ..... 17 vccio ..... 18 gndio ..... 19 rxer4/fifosel0.. 20 txen4 ..... 21 txdata4_0 ..... 22 txdata4_1 ..... 23 mdc1 ..... 24 mdio1 ..... 25 mdint1_l ..... 26 rxdata3_1 ..... 27 rxdata3_0 ..... 28 vccio ..... 29 gndio ..... 30 crs_dv3 ..... 31 rxer3 ..... 32 txen3 ..... 33 txdata3_0 ..... 34 txdata3_1 ..... 35 rxdata2_1 ..... 36 rxdata2_0 ..... 37 gndio ..... 38 crs_dv2 ..... 39 rxer2/preasel ..... 40 txen2 ..... 41 txdata2_0 ..... 42 txdata2_1 ..... 43 refclk0 ..... 44 rxdata1_1 ..... 45 rxdata1_0 ..... 46 vccio ..... 47 gndio ..... 48 crs_dv1 ..... 49 rxer1/pause ..... 50 txen1 ..... 51 txdata1_0 ..... 52 156 ....... tpfin7 155 ....... gndr7 154 ....... tpfop7 153 ....... tpfon7 152 ....... vcct6/7 151 ....... tpfon6 150 ....... tpfop6 149 ....... gndr6 148 ....... gndt6/7 147 ....... tpfin6 146 ....... tpfip6 145 ....... vccr6 144 ....... vccr5 143 ....... tpfip5 142 ....... tpfin5 141 ....... gndr5 140 ....... tpfop5 139 ....... tpfon5 138 ....... vcct4/5 137 ....... tpfon4 136 ....... tpfop4 135 ....... gndr4 134 ....... gndt4/5 133 ....... tpfin4 132 ....... tpfip4 131 ....... vccr4 130 ....... vccr3 129 ....... tpfip3 128 ....... tpfin3 127 ....... gndt2/3 126 ....... gndr3 125 ....... tpfop3 124 ....... tpfon3 123 ....... vcct2/3 122 ....... tpfon2 121 ....... tpfop2 120 ....... gndr2 119 ....... tpfin2 118 ....... tpfip2 117 ....... vccr2 116 ....... vccr1 115 ....... tpfip1 114 ....... tpfin1 113 ....... gndt0/1 112 ....... gndr1 111 ....... tpfop1 110 ....... tpfon1 109 ....... vcct0/1 108 ....... tpfon0 107 ....... tpfop0 106 ....... gndr0 105 ....... tpfin0 208....... vccio 207....... gndio 206....... rxdata6_0 205....... rxdata6_1 204....... txdata7_1 203....... txdata7_0 202....... txen7 201....... rxer7 200....... crs_dv7 199....... gndio 198....... rxdata7_0 197....... rxdata7_1 196....... vccd 195....... gndd 194....... led7_3_l 193....... led7_2_l 192....... led7_1_l 191....... led6_3_l 190....... led6_2_l 189....... led6_1_l 188....... gndio 187....... led5_3_l 186....... led5_2_l 185....... led5_1_l 184....... vccd 183....... gndd 182....... led4_3_l 181....... led4_2_l 180....... led4_1_l 179....... sgnd 178....... modesel1 177....... modesel0 176....... section 175....... reset_l 174....... pwrdwn 173....... g_fx/tp_l 172....... nc 171....... trst_l 170....... tck 169....... tms 168....... tdo 167....... tdi 166....... sd7 165....... sd6 164....... vccpecl 163....... gndpecl 162....... sd5 161....... sd4 160....... nc 159....... nc 158....... vccr7 157....... tpfip7 txdata1_1......53 rxdata0_1......54 rxdata0_0......55 vccio......56 gndio......57 crs_dv0......58 rxer0/mdix......59 txen0......60 txdata0_0......61 txdata0_1......62 mdc0......63 mdio0......64 vccd......65 gndd......66 mdint0_l......67 led3_3_l......68 led3_2_l......69 led3_1_l......70 led2_3_l......71 led2_2_l......72 led2_1_l......73 gndio......74 led1_3_l......75 led1_2_l......76 led1_1_l......77 vccd......78 gndd......79 led0_3_l......80 led0_2_l......81 led0_1_l......82 amdix_en......83 mddis......84 cfg_3......85 cfg_2......86 cfg_1......87 add_4......88 add_3......89 add_2......90 add_1......91 add_0......92 txslew_1......93 txslew_0......94 sd_2p5v......95 sd0......96 sd1......97 vccpecl......98 gndpecl......99 sd2......100 sd3......101 nc......102 vccr0......103 tpfip0......104 lxt9785/9785e xx xxxxxxxx part # fpo # rev # bsmc
page 23 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments table 2 rmii pqfp pin list (sheet 1 of 6) pin symbol type reference for full description 1 crs_dv6 o, ts, sl table 5 2 rxer6/linkhold o, ts, sl, id, i, st table 5 table 13 3 txen6 i, id table 5 4 txdata6_0 i, id table 5 5 txdata6_1 i, id table 5 6 refclk1 i table 5 7 rxdata5_1 o, ts, id table 5 8 rxdata5_0 o, ts table 5 9gndio ? table 15 10 crs_dv5 o, ts, sl table 5 11 rxer5 /fifosel1 o, ts, sl, id, i, st table 5 table 13 12 txen5 i, id table 5 13 txdata5_0 i, id table 5 14 txdata5_1 i, id table 5 15 rxdata4_1 o, ts,id table 5 16 rxdata4_0 o, ts table 5 17 crs_dv4 o, ts, sl table 5 18 vccio ? table 15 19 gndio ? table 15 20 rxer4 /fifosel0 o, ts, sl, id, i, st table 5 table 13 21 txen4 i, id table 5 22 txdata4_0 i, id table 5 23 txdata4_1 i, id table 5 24 mdc1 i, st, id table 8 25 mdio1 i/o, ts, sl, ip table 8 26 mdint1_l od, ts, sl, ip table 8 27 rxdata3_1 o, ts, id table 5 28 rxdata3_0 o, ts table 5 29 vccio ? table 15 30 gndio ? table 15 31 crs_dv3 o, ts, sl table 5 32 rxer3 o, ts, sl, id table 5 33 txen3 i, id table 5 34 txdata3_0 i, id table 5 35 txdata3_1 i, id table 5 36 rxdata2_1 o, ts, id table 5
page 24 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 37 rxdata2_0 o, ts table 5 38 gndio ? table 15 39 crs_dv2 o, ts, sl table 5 40 rxer2 (preasel) o, ts, sl, id, i, st table 5 table 13 41 txen2 i, id table 5 42 txdata2_0 i, id table 5 43 txdata2_1 i, id table 5 44 refclk0 i table 5 45 rxdata1_1 o, ts, id table 5 46 rxdata1_0 o, ts table 5 47 vccio ? table 15 48 gndio ? table 15 49 crs_dv1 o, ts, sl table 5 50 rxer1/pause o, ts, sl, id, i, st table 5 51 txen1 i, id table 5 52 txdata1_0 i, id table 5 53 txdata1_1 i, id table 5 54 rxdata0_1 o, ts, id table 5 55 rxdata0_0 o, ts table 5 56 vccio ? table 15 57 gndio ? table 15 58 crs_dv0 o, ts, sl table 5 59 rxer0/mdix o, ts, sl, id, i, st table 5 60 txen0 i, id table 5 61 txdata0_0 i, id table 5 62 txdata0_1 i, id table 5 63 mdc0 i, st, id table 8 64 mdio0 i/o, ts, sl, ip table 8 65 vccd ? table 15 66 gndd ? table 15 67 mdint0_l od, ts, sl, ip table 8 68 led3_3_l od, ts, so, ip table 14 69 led3_2_l od, ts, sl, ip table 14 70 led3_1_l od, ts, sl, ip table 14 71 led2_3_l od, ts, sl, ip table 14 72 led2_2_l od, ts, sl, ip table 14 73 led2_1_l od, ts, sl, ip table 14 74 gndio ? table 15 table 2 rmii pqfp pin list (sheet 2 of 6) pin symbol type reference for full description
page 25 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 75 led1_3_l od, ts, sl, ip table 14 76 led1_2_l od, ts, sl, ip table 14 77 led1_1_l od, ts, sl, ip table 14 78 vccd ? table 15 79 gndd ? table 15 80 led0_3_l od, ts, sl, ip table 14 81 led0_2_l od, ts, sl, ip table 14 82 led0_1_l od, ts, sl, ip table 14 83 amdix_en i, st, ip table 13 84 mddis i, st, id table 9 85 cfg_3 i, st, id table 13 86 cfg_2 i, st, id table 13 87 cfg_1 i, st, id table 13 88 add_4 i, st, id table 13 89 add_3 i, st, id table 13 90 add_2 i, st, id table 13 91 add_1 i, st, id table 13 92 add_0 i, st, id table 13 93 txslew_1 i, st, id table 13 94 txslew_0 i, st, id table 13 95 sd_2p5v i, st, id table 10 96 sd0 i table 10 97 sd1 i table 10 98 vccpecl ? table 15 99 gndpecl ? table 15 100 sd2 i table 10 101 sd3 i table 10 102 nc ? table 17 103 vccr0 ? table 15 104 tpfip0 ao/ai table 11 105 tpfin0 ao/ai table 11 106 gndr0 ? table 15 107 tpfop0 ao/ai table 11 108 tpfon0 ao/ai table 11 109 vcct0/1 ? table 15 110 tpfon1 ao/ai table 11 111 tpfop1 ao/ai table 11 112 gndr1 ? table 15 113 gndt0/1 ? table 15 table 2 rmii pqfp pin list (sheet 3 of 6) pin symbol type reference for full description
page 26 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 114 tpfin1 ao/ai table 11 115 tpfip1 ao/ai table 11 116 vccr1 ? table 15 117 vccr2 ? table 15 118 tpfip2 ao/ai table 11 119 tpfin2 ao/ai table 11 120 gndr2 ? table 15 121 tpfop2 ao/ai table 11 122 tpfon2 ao/ai table 11 123 vcct2/3 ? table 15 124 tpfon3 ao/ai table 11 125 tpfop3 ao/ai table 11 126 gndr3 ? table 15 127 gndt2/3 ? table 15 128 tpfin3 ao/ai table 11 129 tpfip3 ao/ai table 11 130 vccr3 ? table 15 131 vccr4 ? table 15 132 tpfip4 ao/ai table 11 133 tpfin4 ao/ai table 11 134 gndt4/5 ? table 15 135 gndr4 ? table 15 136 tpfop4 ao/ai table 11 137 tpfon4 ao/ai table 11 138 vcct4/5 ? table 15 139 tpfon5 ao/ai table 11 140 tpfop5 ao/ai table 11 141 gndr5 ? table 15 142 tpfin5 ao/ai table 11 143 tpfip5 ao/ai table 11 144 vccr5 ? table 15 145 vccr6 ? table 15 146 tpfip6 ao/ai table 11 147 tpfin6 ao/ai table 11 148 gndt6/7 ? table 15 149 gndr6 ? table 15 150 tpfop6 ao/ai table 11 151 tpfon6 ao/ai table 11 152 vcct6/7 ? table 15 table 2 rmii pqfp pin list (sheet 4 of 6) pin symbol type reference for full description
page 27 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 153 tpfon7 ao/ai table 11 154 tpfop7 ao/ai table 11 155 gndr7 ? table 15 156 tpfin7 ao/ai table 11 157 tpfip7 ao/ai table 11 158 vccr7 ? table 15 159 nc ? table 17 160 nc ? table 17 161 sd4 i table 10 162 sd5 i table 10 163 gndpecl ? table 15 164 vccpecl ? table 15 165 sd6 i table 10 166 sd7 i table 10 167 tdi i, st, ip table 12 168 tdo o, ts table 12 169 tms i, st, ip table 12 170 tck i, st, id table 12 171 trst_l i, st, ip table 12 172 nc ? table 17 173 g_fx/tp_l i, st, id table 13 174 pwrdwn i, st, id table 13 175 reset_l i, st, ip table 13 176 section i, st, id table 13 177 modesel0 i, st, id table 13 178 modesel1 i, st, id table 13 179 sgnd ? table 15 180 led4_1_l od, ts, sl, ip table 14 181 led4_2_l od, ts, sl, ip table 14 182 led4_3_l od, ts, sl, ip table 14 183 gndd ? table 15 184 vccd ? table 15 185 led5_1_l od, ts, sl, ip table 14 186 led5_2_l od, ts, sl, ip table 14 187 led5_3_l od, ts, sl, ip table 14 188 gndio ? table 15 189 led6_1_l od, ts, sl, ip table 14 190 led6_2_l od, ts, sl, ip table 14 191 led6_3_l od, ts, sl, ip table 14 table 2 rmii pqfp pin list (sheet 5 of 6) pin symbol type reference for full description
page 28 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 192 led7_1_l od, ts, sl, ip table 14 193 led7_2_l od, ts, sl, ip table 14 194 led7_3_l od, ts, sl, ip table 5 195 gndd ? table 15 196 vccd ? table 15 197 rxdata7_1 o, ts, id table 5 198 rxdata7_0 o, ts table 5 199 gndio ? table 15 200 crs_dv7 o, ts, sl table 5 201 rxer7 o, ts, sl, id table 5 202 txen7 i, id table 5 203 txdata7_0 i, id table 5 204 txdata7_1 i, id table 5 205 rxdata6_1 o, ts, id table 5 206 rxdata6_0 o, ts table 5 207 gndio ? table 15 208 vccio ? table 15 table 2 rmii pqfp pin list (sheet 6 of 6) pin symbol type reference for full description
page 29 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 3.1.2 pqfp pin assignments ? smii configuration figure 3 and ta b l e 3 , smii pqfp pin list, on page 30 provide the lxt9785/lxt9785e smii pqfp pin assignments. figure 3 smii 208-pin pqfp assignments nc ..... 1 nc/linkhold ..... 2 nc ..... 3 txdata6 ..... 4 nc ..... 5 refclk1 ..... 6 nc ..... 7 rxdata5 ..... 8 gndio ..... 9 nc ..... 10 fifosel1 ..... 11 nc ..... 12 txdata5 ..... 13 nc ..... 14 nc ..... 15 rxdata4 ..... 16 nc ..... 17 vccio ..... 18 gndio ..... 19 fifosel0 ..... 20 nc ..... 21 txdata4 ..... 22 nc ..... 23 mdc1 ..... 24 mdio1 ..... 25 mdint1_l ..... 26 nc ..... 27 rxdata3 ..... 28 vccio ..... 29 gndio ..... 30 nc ..... 31 nc ..... 32 nc ..... 33 txdata3 ..... 34 sync0 ..... 35 nc ..... 36 rxdata2 ..... 37 gndio ..... 38 nc ..... 39 preasel ..... 40 nc ..... 41 txdata2 ..... 42 nc ..... 43 refclk0 ..... 44 nc ..... 45 rxdata1 ..... 46 vccio ..... 47 gndio ..... 48 nc ..... 49 pause ..... 50 nc ..... 51 txdata1 ..... 52 156 .......tpfin7 155 .......gndr7 154 .......tpfop7 153 .......tpfon7 152 .......vcct6/7 151 .......tpfon6 150 .......tpfop6 149 .......gndr6 148 .......gndt6/7 147 .......tpfin6 146 .......tpfip6 145 .......vccr6 144 .......vccr5 143 .......tpfip5 142 .......tpfin5 141 .......gndr5 140 .......tpfop5 139 .......tpfon5 138 .......vcct4/5 137 .......tpfon4 136 .......tpfop4 135 .......gndr4 134 .......gndt4/5 133 .......tpfin4 132 .......tpfip4 131 .......vccr4 130 .......vccr3 129 .......tpfip3 128 .......tpfin3 127 .......gndt2/3 126 .......gndr3 125 .......tpfop3 124 .......tpfon3 123 .......vcct2/3 122 .......tpfon2 121 .......tpfop2 120 .......gndr2 119 .......tpfin2 118 .......tpfip2 117 .......vccr2 116 .......vccr1 115 .......tpfip1 114 .......tpfin1 113 .......gndt0/1 112 .......gndr1 111 .......tpfop1 110 .......tpfon1 109 .......vcct0/1 108 .......tpfon0 107 .......tpfop0 106 .......gndr0 105 .......tpfin0 208 ....... vccio 207 ....... gndio 206 ....... rxdata6 205 ....... nc 204 ....... sync1 203 ....... txdata7 202 ....... nc 201 ....... nc 200 ....... nc 199 ....... gndio 198 ....... rxdata7 197 ....... nc 196 ....... vccd 195 ....... gndd 194 ....... led7_3_l 193 ....... led7_2_l 192 ....... led7_1_l 191 ....... led6_3_l 190 ....... led6_2_l 189 ....... led6_1_l 188 ....... gndio 187 ....... led5_3_l 186 ....... led5_2_l 185 ....... led5_1_l 184 ....... vccd 183 ....... gndd 182 ....... led4_3_l 181 ....... led4_2_l 180 ....... led4_1_l 179 ....... sgnd 178 ....... modesel_1 177 ....... modesel_0 176 ....... section 175 ....... reset_l 174 ....... pwrdwn 173 ....... g_fx/tp_l 172 ....... nc 171....... trst_l 170 ....... tck 169 ....... tms 168 ....... tdo 167 ....... tdi 166 ....... sd7 165 ....... sd6 164 ....... vccpecl 163 ....... gndpecl 162 ....... sd5 161 ....... sd4 160 ....... nc 159 ....... nc 158 ....... vccr7 157 ....... tpfip7 nc ..... 53 nc ..... 54 rxdata0 ..... 55 vccio ..... 56 gndio ..... 57 nc ..... 58 mdix ..... 59 nc ..... 60 txdata0 ..... 61 nc ..... 62 mdc0 ..... 63 mdio0 ..... 64 vccd ..... 65 gndd ..... 66 mdint0_l ..... 67 led3_3_l ..... 68 led3_2_l ..... 69 led3_1_l ..... 70 led2_3_l ..... 71 led2_2_l ..... 72 led2_1_l ..... 73 gndio ..... 74 led1_3_l ..... 75 led1_2_l ..... 76 led1_1_l ..... 77 vccd ..... 78 gndd ..... 79 led0_3_l ..... 80 led0_2_l ..... 81 led0_1_l ..... 82 amdix_en ..... 83 mddis ..... 84 cfg_3 ..... 85 cfg_2 ..... 86 cfg_1 ..... 87 add_4 ..... 88 add_3 ..... 89 add_2 ..... 90 add_1 ..... 91 add_0 ..... 92 txslew_1 ..... 93 txslew_0 ..... 94 sd_2p5v ..... 95 sd0 ..... 96 sd1 ..... 97 vccpecl ..... 98 gndpecl ..... 99 sd2 ..... 100 sd3 ..... 101 nc ..... 102 vccr0 ..... 103 tpfip0 ..... 104 lxt9785/9785e xx xxxxxxxx part # fpo # rev # bsmc
page 30 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments table 3 smii pqfp pin list (sheet 1 of 6) pin symbol type 1 reference for full description 1nc ? table 16 2 nc/linkhold i, id, table 16 table 13 3nc ? table 16 4 txdata6 i, id table 6 5nc ? table 16 6 refclk1 i table 5 7nc ? table 16 8 rxdata5 o, ts table 6 9gndio ? table 15 10 nc ? table 16 11 fifosel1 i, id, st table 13 12 nc ? table 16 13 txdata5 i, id table 6 14 nc ? table 16 15 nc ? table 16 16 rxdata4 o, ts table 6 17 nc ? table 16 18 vccio ? table 15 19 gndio ? table 15 20 fifosel0 i, id, st table 13 21 nc i, id table 16 22 txdata4 i, id table 6 23 nc ? table 16 24 mdc1 i, st, id table 9 25 mdio1 i/o, ts, sl, ip table 9 26 mdint1_l od, ts, sl, ip table 9 27 nc ? table 16 28 rxdata3 o, ts table 6 29 vccio ? table 15 30 gndio ? table 15 31 nc ? table 16 32 nc ? table 16 33 nc ? table 16 34 txdata3 i, id table 6 35 sync0 i, id table 7 36 nc ? table 16 37 rxdata2 o, ts table 6
page 31 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 38 gndio ? table 15 39 nc ? table 16 40 preasel i, id, st table 13 41 nc ? table 16 42 txdata2 i, id table 6 43 nc ? table 16 44 refclk0 i table 5 45 nc ? table 16 46 rxdata1 o, ts table 6 47 vccio ? table 15 48 gndio ? table 15 49 nc ? table 16 50 pause i, id, st table 13 51 nc ? table 16 52 txdata1 i, id table 6 53 nc ? table 16 54 nc ? table 16 55 rxdata0 o, ts table 6 56 vccio ? table 15 57 gndio ? table 15 58 nc ? table 16 59 mdix i, id, st table 13 60 nc ? table 16 61 txdata0 i, id table 6 62 nc ? table 16 63 mdc0 i, st, id table 9 64 mdio0 i/o, ts, sl, ip table 9 65 vccd ? table 15 66 gndd ? table 15 67 mdint0_l od, ts, sl, ip table 9 68 led3_3_l od, ts, so, ip table 14 69 led3_2_l od, ts, sl, ip table 14 70 led3_1_l od, ts, sl, ip table 14 71 led2_3_l od, ts, sl, ip table 14 72 led2_2_l od, ts, sl, ip table 14 73 led2_1_l od, ts, sl, ip table 14 74 gndio ? table 15 75 led1_3_l od, ts, sl, ip table 14 76 led1_2_l od, ts, sl, ip table 14 table 3 smii pqfp pin list (sheet 2 of 6) pin symbol type 1 reference for full description
page 32 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 77 led1_1_l od, ts, sl, ip table 14 78 vccd ? table 15 79 gndd ? table 15 80 led0_3_l od, ts, sl, ip table 14 81 led0_2_l od, ts, sl, ip table 14 82 led0_1_l od, ts, sl, ip table 14 83 amdix_en i, st, ip table 13 84 mddis i, st, id table 8 85 cfg_3 i, st, id table 13 86 cfg_2 i, st, id table 13 87 cfg_1 i, st, id table 13 88 add_4 i, st, id table 13 89 add_3 i, st, id table 13 90 add_2 i, st, id table 13 91 add_1 i, st, id table 13 92 add_0 i, st, id table 13 93 txslew_1 i, st, id table 13 94 txslew_0 i, st, id table 13 95 sd_2p5v i, st, id table 10 96 sd0 i table 10 97 sd1 i table 10 98 vccpecl ? table 15 99 gndpecl ? table 15 100 sd2 i table 10 101 sd3 i table 10 102 nc ? table 17 103 vccr0 ? table 15 104 tpfip0 ai/ao table 11 105 tpfin0 ai/ao table 11 106 gndr0 ? table 15 107 tpfop0 ao/ai table 11 108 tpfon0 ao/ai table 11 109 vcct0/1 ? table 15 110 tpfon1 ao/ai table 11 111 tpfop1 ao/ai table 11 112 gndr1 ? table 15 113 gndt0/1 ? table 15 114 tpfin1 ai/ao table 11 115 tpfip1 ai/ao table 11 table 3 smii pqfp pin list (sheet 3 of 6) pin symbol type 1 reference for full description
page 33 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 116 vccr1 ? table 15 117 vccr2 ? table 15 118 tpfip2 ai/ao table 11 119 tpfin2 ai/ao table 11 120 gndr2 ? table 15 121 tpfop2 ao/ai table 11 122 tpfon2 ao/ai table 11 123 vcct2/3 ? table 15 124 tpfon3 ao/ai table 11 125 tpfop3 ao/ai table 11 126 gndr3 ? table 15 127 gndt2/3 ? table 15 128 tpfin3 ai/ao table 11 129 tpfip3 ai/ao table 11 130 vccr3 ? table 15 131 vccr4 ? table 15 132 tpfip4 ai/ao table 11 133 tpfin4 ai/ao table 11 134 gndt4/5 ? table 15 135 gndr4 ? table 15 136 tpfop4 ao/ai table 11 137 tpfon4 ao/ai table 11 138 vcct4/5 ? table 15 139 tpfon5 ao/ai table 11 140 tpfop5 ao/ai table 11 141 gndr5 ? table 15 142 tpfin5 ai/ao table 11 143 tpfip5 ai/ao table 11 144 vccr5 ? table 15 145 vccr6 ? table 15 146 tpfip6 ai/ao table 11 147 tpfin6 ai/ao table 11 148 gndt6/7 ? table 15 149 gndr6 ? table 15 150 tpfop6 ao/ai table 11 151 tpfon6 ao/ai table 11 152 vcct6/7 ? table 15 153 tpfon7 ao/ai table 11 154 tpfop7 ao/ai table 11 table 3 smii pqfp pin list (sheet 4 of 6) pin symbol type 1 reference for full description
page 34 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 155 gndr7 ? table 15 156 tpfin7 ai/ao table 11 157 tpfip7 ai/ao table 11 158 vccr7 ? table 15 159 nc ? table 17 160 nc ? table 17 161 sd4 i table 10 162 sd5 i table 10 163 gndpecl ? table 15 164 vccpecl ? table 15 165 sd6 i table 10 166 sd7 i table 10 167 tdi i, st, ip table 12 168 tdo o, ts table 12 169 tms i, st, ip table 12 170 tck i, st, id table 12 171 trst_l i, st, ip table 12 172 nc ? table 17 173 g_fx/tp_l i, st, id table 13 174 pwrdwn i, st, id table 13 175 reset_l i, st, ip table 13 176 section i, st, id table 13 177 modesel0 i, st, id table 13 178 modesel1 i, st, id table 13 179 sgnd ? table 15 180 led4_1_l od, ts, sl, ip table 14 181 led4_2_l od, ts, sl, ip table 14 182 led4_3_l od, ts, sl, ip table 14 183 gndd ? table 15 184 vccd ? table 15 185 led5_1_l od, ts, sl, ip table 14 186 led5_2_l od, ts, sl, ip table 14 187 led5_3_l od, ts, sl, ip table 14 188 gndio ? table 15 189 led6_1_l od, ts, sl, ip table 14 190 led6_2_l od, ts, sl, ip table 14 191 led6_3_l od, ts, sl, ip table 14 192 led7_1_l od, ts, sl, ip table 14 193 led7_2_l od, ts, sl, ip table 14 table 3 smii pqfp pin list (sheet 5 of 6) pin symbol type 1 reference for full description
page 35 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 194 led7_3_l od, ts, sl, ip table 5 195 gndd ? table 15 196 vccd ? table 15 197 nc o, ts, id table 16 198 rxdata7 o, ts table 6 199 gndio ? table 15 200 nc ? table 16 201 nc ? table 16 202 nc ? table 16 203 txdata7 i, id table 6 204 sync1 i, id table 5 205 nc ? table 16 206 rxdata6 o, ts table 6 207 gndio ? table 15 208 vccio ? table 15 table 3 smii pqfp pin list (sheet 6 of 6) pin symbol type 1 reference for full description
page 36 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 3.1.3 pqfp pin assignments ? ss-smii configuration figure 4 and table 4, ss-smii pqfp pin list, on page 37 provide the lxt9785/lxt9785e ss-smii pqfp pin assignments. figure 4 ss-smii 208-pin pqfp assignments nc ..... 1 nc/linkhold ..... 2 nc ..... 3 txdata6 ..... 4 nc ..... 5 refclk1 ..... 6 rxdata5 ..... 7 nc ..... 8 gndio ..... 9 nc ..... 10 fifosel1 ..... 11 nc ..... 12 txdata5 ..... 13 nc ..... 14 rxdata4 ..... 15 nc ..... 16 rxsync1 ..... 17 vccio ..... 18 gndio ..... 19 fifosel0 ..... 20 rxclk1 ..... 21 txdata4 ..... 22 nc ..... 23 mdc1 ..... 24 mdio1 ..... 25 mdint1_l ..... 26 rxdata3 ..... 27 nc ..... 28 vccio ..... 29 gndio ..... 30 nc ..... 31 txclk0 ..... 32 nc ..... 33 txdata3 ..... 34 txsync0 ..... 35 rxdata2 ..... 36 nc ..... 37 gndio ..... 38 nc ..... 39 preasel ..... 40 nc ..... 41 txdata2 ..... 42 nc ..... 43 refclk0 ..... 44 rxdata1 ..... 45 nc ..... 46 vccio ..... 47 gndio ..... 48 nc ..... 49 pause ..... 50 nc ..... 51 txdata1 ..... 52 pause ..... 52 156....... tpfin7 155....... gndr7 154....... tpfop7 153....... tpfon7 152....... vcct6/7 151....... tpfon6 150....... tpfop6 149....... gndr6 148....... gndt6/7 147....... tpfin6 146....... tpfip6 145....... vccr6 144....... vccr5 143....... tpfip5 142....... tpfin5 141....... gndr5 140....... tpfop5 139....... tpfon5 138....... vcct4/5 137....... tpfon4 136....... tpfop4 135....... gndr4 134....... gndt4/5 133....... tpfin4 132....... tpfip4 131....... vccr4 130....... vccr3 129....... tpfip3 128....... tpfin3 127....... gndt2/3 126....... gndr3 125....... tpfop3 124....... tpfon3 123....... vcct2/3 122....... tpfon2 121....... tpfop2 120....... gndr2 119....... tpfin2 118....... tpfip2 117....... vccr2 116....... vccr1 115....... tpfip1 114....... tpfin1 113....... gndt0/1 112....... gndr1 111....... tpfop1 110....... tpfon1 109....... vcct0/1 108....... tpfon0 107....... tpfop0 106....... gndr0 105....... tpfin0 208........ vccio 207........ gndio 206........ nc 205........ rxdata6 204........ txsync1 203........ txdata7 202........ nc 201........ txclk1 200........ nc 199........ gndio 198........ nc 197........ rxdata7 196........vccd 195........ gndd 194........ led7_3_l 193........ led7_2_l 192........ led7_1_l 191........ led6_3_l 190........ led6_2_l 189........ led6_1_l 188........ gndio 187........ led5_3_l 186........ led5_2_l 185........ led5_1_l 184........ vccd 183........ gndd 182........ led4_3_l 181........ led4_2_l 180........ led4_1_l 179........ sgnd 178........ modesel_1 177........ modesel_0 176........ section 175........ reset_l 174........ pwrdwn 173........ g_fx/tp_l 172........ nc 171....... trst_l 170........ tck 169........ tms 168........ tdo 167........ tdi 166........ sd7 165........ sd6 164........ vccpecl 163........ gndpecl 162........ sd5 161........ sd4 160........ nc 159........ nc 158........ vccr7 157........ tpfip7 nc ..... 53 rxdata0 ..... 54 nc ..... 55 vccio ..... 56 gndio ..... 57 rxsync0 ..... 58 mdix ..... 59 rxclk0 ..... 60 txdata0 ..... 61 nc ..... 62 mdc0 ..... 63 mdio0 ..... 64 vccd ..... 65 gndd ..... 66 mdint0_l ..... 67 led3_3_l ..... 68 led3_2_l ..... 69 led3_1_l ..... 70 led2_3_l ..... 71 led2_2_l ..... 72 led2_1_l ..... 73 gndio ..... 74 led1_3_l ..... 75 led1_2_l ..... 76 led1_1_l ..... 77 vccd ..... 78 gndd ..... 79 led0_3_l ..... 80 led0_2_l ..... 81 led0_1_l ..... 82 amdix_en ..... 83 mddis ..... 84 cfg_3 ..... 85 cfg_2 ..... 86 cfg_1 ..... 87 add_4 ..... 88 add_3 ..... 89 add_2 ..... 90 add_1 ..... 91 add_0 ..... 92 txslew_1 ..... 93 txslew_0 ..... 94 sd_2p5v ..... 95 sd0 ..... 96 sd1 ..... 97 vccpecl ..... 98 gndpecl ..... 99 sd2 ..... 100 sd3 ..... 101 nc ..... 102 vccr0 ..... 103 tpfip0 ..... 104 lxt9785/9785e xx xxxxxxxx part # fpo # rev # bsmc
page 37 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments table 4 ss-smii pqfp pin list (sheet 1 of 6) pin symbol type 1 reference for full description 1nc ? ta b l e 1 6 2 nc/ linkhold ? i, id ta b l e 1 6 ta b l e 1 3 3nc ? ta b l e 1 6 4 txdata6 i, id ta b l e 6 5nc i ta b l e 1 6 6 refclk1 i ta b l e 6 7 rxdata5 o, ts, id ta b l e 8 8nc ? ta b l e 1 6 9gndio ? ta b l e 1 5 10 nc ? ta b l e 1 6 11 fifosel1 i, id, st ta b l e 1 3 12 nc ? ta b l e 1 6 13 txdata5 i, id ta b l e 6 14 nc ? ta b l e 1 6 15 rxdata4 o, ts, id ta b l e 8 16 nc ? ta b l e 1 6 17 rxsync1 o, ts, id ta b l e 8 18 vccio ? ta b l e 1 5 19 gndio ? ta b l e 1 5 20 fifosel0 i, id, st ta b l e 1 3 21 rxclk1 o, ts, id ta b l e 8 22 txdata4 i, id ta b l e 6 23 nc ? ta b l e 1 6 24 mdc1 i, st, id ta b l e 9 25 mdio1 i/o, ts, sl, ip ta b l e 9 26 mdint1_l od, ts, sl, ip ta b l e 9 27 rxdata3 o, ts, id ta b l e 8 28 nc ? ta b l e 1 6 29 vccio ? ta b l e 1 5 30 gndio ? ta b l e 1 5 31 nc ? ta b l e 1 6 32 txclk0 i, id ta b l e 8 33 nc ? ta b l e 1 6 34 txdata3 i, id ta b l e 6 35 txsync0 i, id ta b l e 8 36 rxdata2 o, ts, id ta b l e 8 37 nc ? ta b l e 1 6
page 38 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 38 gndio ? ta b l e 1 5 39 nc ? ta b l e 1 6 40 preasel i, st ta b l e 1 3 41 nc ? ta b l e 1 6 42 txdata2 i, id ta b l e 6 43 nc ? ta b l e 1 6 44 refclk0 i ta b l e 6 45 rxdata1 o, ts, id ta b l e 8 46 nc ? ta b l e 1 6 47 vccio ? ta b l e 1 5 48 gndio ? ta b l e 1 5 49 nc ? ta b l e 1 6 50 pause i, id, st ta b l e 1 3 51 nc ? ta b l e 1 6 52 txdata1 i, id ta b l e 6 53 nc ? ta b l e 1 6 54 rxdata0 o, ts, id ta b l e 8 55 nc ? ta b l e 1 6 56 vccio ? ta b l e 1 5 57 gndio ? ta b l e 1 5 58 rxsync0 o, ts, id ta b l e 8 59 mdix i, id, st ta b l e 1 3 60 rxclk0 ? ta b l e 8 61 txdata0 i, id ta b l e 6 62 nc ? ta b l e 1 6 63 mdc0 i, st, id ta b l e 9 64 mdio0 i/o, ts, sl, ip ta b l e 9 65 vccd ? ta b l e 1 5 66 gndd ? ta b l e 1 5 67 mdint0_l od, ts, sl, ip ta b l e 9 68 led3_3_l od, ts, so, ip ta b l e 1 4 69 led3_2_l od, ts, sl, ip ta b l e 1 4 70 led3_1_l od, ts, sl, ip ta b l e 1 4 71 led2_3_l od, ts, sl, ip ta b l e 1 4 72 led2_2_l od, ts, sl, ip ta b l e 1 4 73 led2_1_l od, ts, sl, ip ta b l e 1 4 74 gndio ? ta b l e 1 5 75 led1_3_l od, ts, sl, ip ta b l e 1 4 76 led1_2_l od, ts, sl, ip ta b l e 1 4 table 4 ss-smii pqfp pin list (sheet 2 of 6) pin symbol type 1 reference for full description
page 39 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 77 led1_1_l od, ts, sl, ip ta b l e 1 4 78 vccd ? ta b l e 1 5 79 gndd ? ta b l e 1 5 80 led0_3_l od, ts, sl, ip ta b l e 1 4 81 led0_2_l od, ts, sl, ip ta b l e 1 4 82 led0_1_l od, ts, sl, ip ta b l e 1 4 83 amdix_en i, st, ip ta b l e 1 3 84 mddis i, st, id ta b l e 9 85 cfg_3 i, st, id ta b l e 1 3 86 cfg_2 i, st, id ta b l e 1 3 87 cfg_1 i, st, id ta b l e 1 3 88 add_4 i, st, id ta b l e 1 3 89 add_3 i, st, id ta b l e 1 3 90 add_2 i, st, id ta b l e 1 3 91 add_1 i, st, id ta b l e 1 3 92 add_0 i, st, id ta b l e 1 3 93 txslew_1 i, st, id ta b l e 1 3 94 txslew_0 i, st, id ta b l e 1 3 95 sd_2p5v i, st, id ta b l e 1 0 96 sd0 i ta b l e 1 0 97 sd1 i ta b l e 1 0 98 vccpecl ? ta b l e 1 5 99 gndpecl ? ta b l e 1 5 100 sd2 i ta b l e 1 0 101 sd3 i ta b l e 1 0 102 nc ? ta b l e 1 6 103 vccr0 ? ta b l e 1 5 104 tpfip0 ai/ao ta b l e 11 105 tpfin0 ai/ao ta b l e 11 106 gndr0 ? ta b l e 1 5 107 tpfop0 ao/ai ta b l e 11 108 tpfon0 ao/ai ta b l e 11 109 vcct0/1 ? ta b l e 1 5 110 tpfon1 ao/ai ta b l e 11 111 tpfop1 ao/ai ta b l e 11 112 gndr1 ? ta b l e 1 5 113 gndt0/1 ? ta b l e 1 5 114 tpfin1 ai/ao ta b l e 11 115 tpfip1 ai/ao ta b l e 11 table 4 ss-smii pqfp pin list (sheet 3 of 6) pin symbol type 1 reference for full description
page 40 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 116 vccr1 ? ta b l e 1 5 117 vccr2 ? ta b l e 1 5 118 tpfip2 ai/ao ta b l e 11 119 tpfin2 ai/ao ta b l e 11 120 gndr2 ? ta b l e 1 5 121 tpfop2 ao/ai ta b l e 11 122 tpfon2 ao/ai ta b l e 11 123 vcct2/3 ? ta b l e 1 5 124 tpfon3 ao/ai ta b l e 11 125 tpfop3 ao/ai ta b l e 11 126 gndr3 ? ta b l e 1 5 127 gndt2/3 ? ta b l e 1 5 128 tpfin3 ai/ao ta b l e 11 129 tpfip3 ai/ao ta b l e 11 130 vccr3 ? ta b l e 1 5 131 vccr4 ? ta b l e 1 5 132 tpfip4 ai/ao ta b l e 11 133 tpfin4 ai/ao ta b l e 11 134 gndt4/5 ? ta b l e 1 5 135 gndr4 ? ta b l e 1 5 136 tpfop4 ao/ai ta b l e 11 137 tpfon4 ao/ai ta b l e 11 138 vcct4/5 ? ta b l e 1 5 139 tpfon5 ao/ai ta b l e 11 140 tpfop5 ao/ai ta b l e 11 141 gndr5 ? ta b l e 1 5 142 tpfin5 ai/ao ta b l e 11 143 tpfip5 ai/ao ta b l e 11 144 vccr5 ? ta b l e 1 5 145 vccr6 ? ta b l e 1 5 146 tpfip6 ai/ao ta b l e 11 147 tpfin6 ai/ao ta b l e 11 148 gndt6/7 ? ta b l e 1 5 149 gndr6 ? ta b l e 1 5 150 tpfop6 ao/ai ta b l e 11 151 tpfon6 ao/ai ta b l e 11 152 vcct6/7 ? ta b l e 1 5 153 tpfon7 ao/ai ta b l e 11 154 tpfop7 ao/ai ta b l e 11 table 4 ss-smii pqfp pin list (sheet 4 of 6) pin symbol type 1 reference for full description
page 41 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 155 gndr7 ? ta b l e 1 5 156 tpfin7 ai/ao ta b l e 11 157 tpfip7 ai/ao ta b l e 11 158 vccr7 ? ta b l e 1 5 159 nc ? ta b l e 1 6 160 nc ? ta b l e 1 6 161 sd4 i ta b l e 1 0 162 sd5 i ta b l e 1 0 163 gndpecl ? ta b l e 1 5 164 vccpecl ? ta b l e 1 5 165 sd6 i ta b l e 1 0 166 sd7 i ta b l e 1 0 167 tdi i, st, ip ta b l e 1 2 168 tdo o, ts ta b l e 1 2 169 tms i, st, ip ta b l e 1 2 170 tck i, st, id ta b l e 1 2 171 trst_l i, st, ip ta b l e 1 2 172 nc ? ta b l e 1 6 173 g_fx/tp_l i, st, id ta b l e 1 3 174 pwrdwn i, st, id ta b l e 1 3 175 reset_l i, st, ip ta b l e 1 3 176 section i, st, id ta b l e 1 3 177 modesel0 i, st, id ta b l e 1 3 178 modesel1 i, st, id ta b l e 1 3 179 sgnd ? ta b l e 1 5 180 led4_1_l od, ts, sl, ip ta b l e 1 4 181 led4_2_l od, ts, sl, ip ta b l e 1 4 182 led4_3_l od, ts, sl, ip ta b l e 1 4 183 gndd ? ta b l e 1 5 184 vccd ? ta b l e 1 5 185 led5_1_l od, ts, sl, ip ta b l e 1 4 186 led5_2_l od, ts, sl, ip ta b l e 1 4 187 led5_3_l od, ts, sl, ip ta b l e 1 4 188 gndio ? ta b l e 1 5 189 led6_1_l od, ts, sl, ip ta b l e 1 4 190 led6_2_l od, ts, sl, ip ta b l e 1 4 191 led6_3_l od, ts, sl, ip ta b l e 1 4 192 led7_1_l od, ts, sl, ip ta b l e 1 4 193 led7_2_l od, ts, sl, ip ta b l e 1 4 table 4 ss-smii pqfp pin list (sheet 5 of 6) pin symbol type 1 reference for full description
page 42 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.1 pqfp pin assignments 194 led7_3_l od, ts, sl, ip ta b l e 1 4 195 gndd ? ta b l e 1 5 196 vccd ? ta b l e 1 5 197 rxdata7 o, ts, id ta b l e 8 198 nc ? ta b l e 1 6 199 gndio ? ta b l e 1 5 200 nc ? ta b l e 1 6 201 txclk1 i, id ta b l e 8 202 nc ? ta b l e 1 6 203 txdata7 i, id ta b l e 6 204 txsync1 i, id ta b l e 8 205 rxdata6 o, ts, id ta b l e 8 206 nc ? ta b l e 1 6 207 gndio ? ta b l e 1 5 208 vccio ? ta b l e 1 5 table 4 ss-smii pqfp pin list (sheet 6 of 6) pin symbol type 1 reference for full description
page 43 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions 3.2 pqfp signal descriptions 3.2.1 signal name conventions signal names may contain either a port desi gnation or a serial designation, or a combination of the two designations. sign al naming conventions are as follows: ? port number only. individual signals that apply to a particular port are designated by the signal mnemonic, immediately followed by the port designation. for example, transmit enable signals would be ident ified as txen0, txen1, and txen2. ? serial number only. a set of signals which are not tied to any specific port are designated by the signal mnemonic, followed by an underscore and a serial designation. for example, a set of thre e global configuration signals would be identified as cfg_1, cfg_2, and cfg_3. ? port and serial number. in cases where each port is assigned a set of multiple signals, each signal is designated in th e following order: signal mnemonic, port designation, an underscore, and the serial designation. for example, a set of three port configuration signals would be identified as rxdata0_0 and rxdata0_1, rxdata1_0 and rxdata1_1, and rxdata2_0 and rxdata2_1. 3.2.2 pqfp signal descriptions ? rmii, smii, and ss-smii configurations table 5 through table 17, receive fifo depth considerations , on page 57 provide pqfp signal descriptions. ball designations are included for cross-reference. table 5 rmii signal descriptions ? pqfp (sheet 1 of 3) pin-ball designation symbol type 1 signal description 2,3 pqfp pbga 44 6 e6, e12 refclk0 refclk1 i reference clock. 50 mhz rmii reference clock is always required. rmii inputs are sampled on the rising edge of refclk, rmii outputs are sourced on the falling edge. 61 62 e2, f4 txdata0_0 txdata0_1 i, id transmit data - port 0. inputs containing 2-bit parall el di-bits to be transmitted from port 0 are clocked in synchronously to refclk. 52 53 c3, d4 txdata1_0 txdata1_1 i, id transmit data - port 1. inputs containing 2-bit parall el di-bits to be transmitted from port 1 are clocked in synchronously to refclk 42 43 b5 a4 txdata2_0 txdata2_1 i, id transmit data - port 2. inputs containing 2-bit parall el di-bits to be transmitted from port 2 are clocked in synchronously to refclk. 34 35 d8, a6 txdata3_0 txdata3_1 i, id transmit data - port 3. inputs containing 2-bit parall el di-bits to be transmitted from port 3 are clocked in synchronously to refclk. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. rxdata[0:7]_0, rxdata[0:7]_1, crs_dv[0:7] and rxer[0:7] outputs are three-stated in isolation and h/w power-down modes and during h/w reset.
page 44 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions 22 23 a11, c10 txdata4_0 txdata4_1 i, id transmit data - port 4. inputs containing 2-bit parall el di-bits to be transmitted from port 4 are clocked in synchronously to refclk. 13 14 b13, d11 txdata5_0 txdata5_1 i, id transmit data - port 5. inputs containing 2-bit parall el di-bits to be transmitted from port 5 are clocked in synchronously to refclk. 4 5 d13, a16 txdata6_0 txdata6_1 i, id transmit data - port 6. inputs containing 2-bit parall el di-bits to be transmitted from port 6 are clocked in synchronously to refclk. 203 204 e14, c16 txdata7_0 txdata7_1 i, id transmit data - port 7. inputs containing 2-bit parall el di-bits to be transmitted from port 7 are clocked in synchronously to refclk. 60 51 41 33 21 12 3 202 e3, b2, c6, a7, b11, a14, c14, d16 txen0 txen1 txen2 txen3 txen4 txen5 txen6 txen7 i, id transmit enable - ports 0-7. active high input enables re spective port transmitter. this signal must be sync hronous to the refclk. 55 54 c2, b1 rxdata0_0 rxdata0_1 o, ts o, ts, id receive data - port 0. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. 46 45 a3, b4 rxdata1_0 rxdata1_1 o, ts o, ts, id receive data - port 1. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. 37 36 b6, c7 rxdata2_0 rxdata2_1 o, ts o, ts, id receive data - port 2. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. 28 27 d9, b9 rxdata3_0 rxdata3_1 o, ts o, ts, id receive data - port 3. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. 16 15 a13, c12 rxdata4_0 rxdata4_1 o, ts o, ts, id receive data - port 4. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. 8 7 b14, b15 rxdata5_0 rxdata5_1 o, ts o, ts, id receive data - port 5. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. 206 205 c15, b17 rxdata6_0 rxdata6_1 o, ts o, ts, id receive data - port 6. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. table 5 rmii signal descriptions ? pqfp (sheet 2 of 3) pin-ball designation symbol type 1 signal description 2,3 pqfp pbga 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. rxdata[0:7]_0, rxdata[0:7]_1, crs_dv[0:7] and rxer[0:7] outputs are three-stated in isolation and h/w power-down modes and during h/w reset.
page 45 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions 198 197 e16, f14 rxdata7_0 rxdata7_1 o, ts o, ts, id receive data - port 7. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. 58 49 39 31 17 10 1 200 e4, c4, a5, b8, b12, d12, b16, e15 crs_dv0 crs_dv1 crs_dv2 crs_dv3 crs_dv4 crs_dv5 crs_dv6 crs_dv7 o, ts, sl, id carrier sense/receive data valid - ports 0-7. on detection of valid carrier, these signals are asserted asynchronously with respec t to refclk. crs_dvn is de-asserted on loss of carrier, synchronous to refclk. 59 50 40 32 20 11 2 201 d2, d5, d7, c8, a12, a15, a17, d17 rxer0 rxer1 rxer2 rxer3 rxer4 rxer5 rxer6 rxer7 o, ts, sl, id receive error - ports 0-7. these signals are synchr onous to the respective refclk. active high indicates that received code group is invalid, or that pll is not locked. the rxer signals have the following additional function pins: rxer0 (mdix) rxer1 (pause) rxer2 (preasel) rxer4 (fifosel0) rxer5 (fifosel1) rxer6 (linkhold) table 5 rmii signal descriptions ? pqfp (sheet 3 of 3) pin-ball designation symbol type 1 signal description 2,3 pqfp pbga 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. rxdata[0:7]_0, rxdata[0:7]_1, crs_dv[0:7] and rxer[0:7] outputs are three-stated in isolation and h/w power-down modes and during h/w reset.
page 46 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions table 6 smii/ss-smii common signal descriptions ? pqfp pin/ball designation symbol type 1 signal description 2 pqfp pbga 61 52 42 34 22 13 4 203 e2, c3, b5, d8, a11, b13, d13, e14 txdata0 txdata1 txdata2 txdata3 txdata4 txdata5 txdata6 txdata7 i, id transmit data - ports 0-7. these serial input streams provide data to be transmitted to the network. the lxt9785/lxt9785e clocks the data in synchronously to refclk. 44 6 e6, e12 refclk0 refclk1 i reference clock. the lxt9785/lxt9785e always requires a 125 mhz reference clock input. refer to functional description for detailed clock requirements. refclk0 and refclk1 are always connected regardless of sectionalization mode. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. table 7 smii specific signal descriptions ? pqfp pin/ball designation symbol type 1 signal description 2,3 pqfp pbga 35 204 a6, c16 sync0 sync1 i, id smii synchronization. the mac must generate a sync pulse every 10 refclk cycles to synchronize the smii. sync0 is used when 1x8 port sectionalization is selected. sync0 and sync1 are to be used when 2x4 port se ctionalizati on is chosen. 55 46 37 28 16 8 206 198 c2, a3, b6, d9, a13, b14, c15, e16 rxdata0 rxdata1 rxdata2 rxdata3 rxdata4 rxdata5 rxdata6 rxdata7 o, ts receive data - ports 0-7 . these serial output streams provide data received from the network. the lxt9785/lxt9785e drives the data out synchronously to refclk. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. 3. rxdata[0:7] outputs are three-stated in isolation and hardware power-down modes and during hardware reset.
page 47 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions table 8 ss-smii specific si gnal descriptions ? pqfp pin/ball designation symbol type 1 signal description 2,3 pqfp pbga 35 204 a6, c16 txsync0 txsync1 i, id ss-smii transmit synchronization. the mac must generate a txsync pulse every 10 txclk cycles to mark the start of txdata segments. txsync0 is used when 1x8 port secti onalization is selected. 58 17 e4, b12 rxsync0 rxsync1 o, ts, id ss-smii receive synchronization. the lxt9785/lxt9785e generates these pulses every 10 rxclk cycles to mark the start of rxdata segments for the mac. rxsync1 is used when 1x8 port sectionalization is selected. rxsync0 may not be used. these outputs are only enabled when ss-smii mode is enabled. 32 201 c8, d17 txclk0 txclk1 i, id ss-smii transmit clock. the mac sources this 125 mhz clock as the timing reference for txdata and txsync. only txclk0 is used when 1x8 port sectionalizat ion is selected. see section 4.4.2, clock/sync requirements , on page 148 for detailed clock requirements. 60 21 e3, b11 rxclk0 rxclk1 o, ts, id ss-smii receive clock. the lxt9785/lxt9785e generates these clocks, based on refclk, to provide a timing reference for rxdata and rxsync to the mac. rxclk1 is used when 1x8 port sectionalization is selected. rxclk0 may not be used. see section 4.4.2, clock/sync requirements , on page 148 for detailed clock requirements. these outputs are only enabled when ss-smii mode is enabled. 54 45 36 27 15 7 205 197 b1, b4, c7, b9, c12, b15, b17, f14 rxdata0 rxdata1 rxdata2 rxdata3 rxdata4 rxdata5 rxdata6 rxdata7 o, ts, id receive data - ports 0-7. these serial output streams provide data received from the network. the lxt9785/lxt9785e drives the data out synchronously to refclk. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. rxdata[0:7], rxsync[0:1], and rxclk[0:1] outputs are three-stated in isolation and h/w power-down modes and during h/w reset.
page 48 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions table 9 mdio control interface signals ? pqfp pin/ball designation symbol type 1 signal description 2,3,4 pqfp pbga 64 25 f3, a10 mdio0 mdio1 i/o, ts, sl, ip management data input/output. bidirectional serial dat a channel for communication between the phy and mac or switch asic. only mdio0 is used when 1x8 port sectionalization is selected. in 2x4 port sectionalization mode, mdio0 accesses ports 0-3 and mdio1 accesses ports 4-7. refer to figure 21 on page 161 . 67 26 f1, c9 mdint0_l mdint1_l od,ts, sl, ip management data interrupt. when register bit 18.1 = 1, an active low output on this pin indicates status change. only mdint0_l is used when 1x8 port sectionalization is selected. in 2x4 port sectionalization mode, mdin t0_l is associated with ports 0-3 and mdint1_l is associated with ports 4-7. refer to figure 21 on page 161 . 63 24 e1, b10 mdc0 mdc1 i, st, id management data clock. clock for the mdio serial data channel. maximum frequency is 20 mhz. only mdc0 is used when 1x8 port sectionalization is selected. in 2x4 port sectionalization mode, mdc0 clocks ports 0-3 register accesses and mdc1 clocks ports 4-7 regi ster accesses. refer to figure 21 on page 161 . 84 l1 mddis i, st, id management disable. when mddis is tied high, the mdio port is completely disabled and the hardware control interface pins set their respective bits at power up and reset. when mddis is pulled low at power up or reset, via the internal pull-down resistor or by tying it to ground, the hardware control interface pins control only the initial or ?default? values of their respective register bits. after the power-up/reset cycle is complete, bit control reverts to the mdio serial channel. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-do wn mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. mdio[0:1] and mdint[0:1] outputs are three-stated in h/w power-down mode and during h/w reset. 4. supports the 802.3 mdio register set. specific bits in the registers are referenced using an ?x.y? notation, where x is the register number (0-32) and y is the bit number (0-15).
page 49 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions table 10 signal detect ? pqfp pin/ball designation symbol type 1 signal description2,3 pqfp pbga 95 p1 sd_2p5v i, st, id signal detect 2.5 volt interface. sd input threshold voltage select. tie to vccpecl = select 2.5 v lvpecl input levels float or tie to gndpecl = select 3.3 v lvpecl input levels 96 97 100 101 161 162 165 166 p2, n4, p3, n5, p15, p16, p17, n17 sd0 sd1 sd2 sd3 sd4 sd5 sd6 sd7 i signal detect - ports 0-7. signal detect input from the fiber transceiver (these inputs are only active for ports operating in fiber mode). logic high = normal operation (the process of searching for receive idles for the purpose of bringing link up is initiated) logic low = link is declared lost 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. 3. tie sd[0:7] inputs to gndpecl if unused. table 11 network interface signal descriptions ? pqfp pin/ball designation symbol type 1 signal description pqfp pbga 107, 108 111, 110 121, 122 125, 124 136, 137 140, 139 150, 151 154, 153 t2, u1, t3, r4, t6, u5, u7, t7, t10, r10, t11, u11, t14,u15, r14, t15 tpfop0, tpfon0 tpfop1, tpfon1 tpfop2, tpfon2 tpfop3, tpfon3 tpfop4, tpfon4 tpfop5, tpfon5 tpfop6, tpfon6 tpfop7, tpfon7 ao/ai twisted-pair/fiber outputs 2 , positive & negative, ports 0-7. during 100base-tx or 10base-t operation, tpfo pins drive 802.3 compliant pulses onto the line. during 100base-fx operation, tpfo pins produce differential lvpecl outputs for fiber transceivers. 104, 105 115, 114 118, 119 129, 128 132, 133 143, 142 146, 147 157, 156 r2, t1, u3, t4, r6, t5, t8, r8, t9, u9, u13, t12, r12, t13, r16, t16 tpfip0, tpfin0 tpfip1, tpfin1 tpfip2, tpfin2 tpfip3, tpfin3 tpfip4, tpfin4 tpfip5, tpfin5 tpfip6, tpfin6 tpfip7, tpfin7 ai/ao twisted-pair/fiber inputs 3 , positive & negative, ports 0-7. during 100base-tx or 10base-t operation, tpfi pins receive differential 100base-tx or 10base-t signals from the line. during 100base-fx operation, tpfi pins receive differential lvpecl inputs from fiber transceivers. 1. type column coding: ai = analog input, ao = analog output. 2. switched to inputs (see tpfip/n description) when not in fiber mode and mdix is not active [that is, twisted-pair, non-crossover mdi mode]. 3. switched to outputs (see tpfop/n description) when not in fiber mode and mdix is not active [that is, twisted-pair, non-crossover mdi mode].
page 50 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions table 12 jtag test sign al descriptions ? pqfp pin/ball designation symbol type 1 signal description 2,3 pqfp pbga 167 n14 tdi i, st, ip test data input. test data sampled with respect to the rising edge of tck. 168 n15 tdo o, ts test data output. test data driven with respect to the falling edge of tck. 169 n16 tms i, st, ip test mode select. 170 m16 tck i, st, id test clock. clock input for jtag test. 171 m17 trst i, st, ip test reset. reset input for jtag test. 1. type column coding: i = input, o = output, od = open drain, ts = three-state-able output, smt = schmitt triggered input, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. tdo output is three-stated in h/w power-down mode and during h/w reset. table 13 miscellaneous signal descriptions ? pqfp (sheet 1 of 4) pin/ball designation symbol type 1 signal description 2 pqfp pbga 94 93 n3, m4 txslew_0 txslew_1 i, st, id tx output slew controls 0 and 1 defaults. these pins are read at startup or reset. their value at that time is used to set the default state of register bits 27.11:10 for all ports. these register bits can be read and overwritten after startup / reset. these pins select the tx output slew rate for all ports (rise and fall time) as follows: txslew_1 txslew_0 slew rate (rise and fall time) 0 0 3.3 ns 0 1 3.6 ns 1 0 3.9 ns 1 1 4.2 ns 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during hardware power-down mode. 3. the linkhold ability is avail able only for stepping 4 (revision d0).
page 51 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions 50 d5 pause i, id, st pause default. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 4.10 for all ports. this register bit can be read and overwritten after startup / reset. when high, the lxt9785/lxt9785e advertises pause capabilities on all ports during auto-negotiation. this pin is shared with rmii- rxer1. an external pull-up resistor (see applications sect ion for value) can be used to set pause active while rx er1 is three-stated during h/w reset. if no pull-up is used, the default pause state is set inactive via the in ternal pull-down resistor. 174 l14 pwrdwn i, st, id power-down. when high, forces the lxt9785/lxt9785e into global power-down mode. pin is not on jtag chain. 175 m15 reset_l i, st, ip reset. this active low input is ored with the control register reset register bit 0.15. when held low, all outputs are forced to inactive state. pin is not on jtag chain. 88 89 90 91 92 l4, m2, m3, n1, n2 add_4 add_3 add_2 add_1 add_0 i, st, id address <4:0>. sets base address. each port adds its port number (starting with 0) to this address to determine its phy address. port 0 address = base port 1 address = base + 1 port 2 address = base + 2 port 3 address = base + 3 port 4 address = base + 4 port 5 address = base + 5 port 6 address = base + 6 port 7 address = base + 7 178 177 l17, l16 modesel_1 modesel_0 i, st, id mode select[1:0]. 00 = rmii 01 = smii 10 = ss-smii 11 = reserved all ports are configured the same. interfaces cannot be mixed and must be all rmii, smii, or ss-smii. 176 l15 section i, st, id sectionalization select. this pin selects sectionaliz ation into separate ports. 0 = 1x8 ports, 1 = 2x4 ports table 13 miscellaneous signal descriptions ? pqfp (sheet 2 of 4) pin/ball designation symbol type 1 signal description 2 pqfp pbga 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during hardware power-down mode. 3. the linkhold ability is avail able only for stepping 4 (revision d0).
page 52 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions 83 k1 amdix_en i, st, ip auto mdix enable default. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 27.9 for all ports. these register bits can be read and overwritten after startup / reset. refer to table 40 on page 142 . when active (high), automatic mdi crossover (mdix) (regardless of segmentation) is selected for all ports. when inactive (low) mdix is selected according to the mdix pin. 59 d2 mdix i, id, st mdix select default. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 27.8 for all ports. these register bits can be read and overwritten after startup / reset. refer to table 40, mdix selection , on page 142 . when amdix_en is active this pin is ignored. when amdix_en is inactive, all ports are forced to the mdi or the mdix function regardless of segmentation. if this pin is active (high) , mdi crossover (mdix) is selected. if this pin is inactive, non-crossover mdi mode is set. this pin is shared with rmii- rxer0. an external pull-up resistor (see applications sect ion for value) can be used to set mdix active while rxer0 is three-stated during h/w reset. if no pull-up is used, the default mdix state is set inactive via the inter nal pull-down resistor. do not tie this pin directly to vccio (vs. using a pull-up) in non-rmii modes. 85 86 87 l2, l3, m1 cfg_3 cfg_2 cfg_1 i, st, id global port configuration defaults 1-3. these pins are read at startup or reset. their value at that time is used to set the default state of register bits shown in table 42, global hardware configuration settings , on page 152 for all ports. these register bits can be read and overwritten after startup / reset. when operating in hardware control mode, these pins provide configuration control options for all the ports (refer to page 152 for details). 173 m14 g_fx/tp_l i, st, id global fx/tp_l enable default. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 16.0 for all ports. these register bits can be read and overwritten after startup / reset. refer to table 93, port configuration register (address 16, hex 10) , on page 222 . this input selects whether all the ports are defaulted to tp vs. fx mode. table 13 miscellaneous signal descriptions ? pqfp (sheet 3 of 4) pin/ball designation symbol type 1 signal description 2 pqfp pbga 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during hardware power-down mode. 3. the linkhold ability is avail able only for stepping 4 (revision d0).
page 53 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions 11 20 a15 a12 fifosel1 fifosel0 i, id, st fifo select <1:0>. these pins are read at startup or reset. their value at that time is used to set the default state of register bits 18.15:14 for all ports. these register bits can be read and overwritten after startup/reset. these pins are shared with rmii-rxer<5:4>. an external pull-up resistor (see applications section for value) can be used to set fifo select<1:0> to active while rxer<5:4> are three-stated during hardware reset. if no pull-up is used, the default fifo select state is set via the internal pull-down resistors. see table 17, receive fifo depth considerations , on page 57 . 40 d7 preasel i, id, st preamble select. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 16.5 for all ports. this register bit can be read and overwritten after startup/reset. this pin is shared with rmii- rxer2. an external pull-up resistor (see applications sect ion for value) can be used to set preamble select to active while rxer2 is three-stated during hardware reset. if no pull-up is used, the default preamble select state is set via the internal pull-down resistors. note: preamble select has no effect in 100 mbps operation. 2 a17 linkhold 3 id linkhold default. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 0.11 for all ports. this register bit can be read and overwritten after startup / reset. when high, the lxt9785/lxt9785e powers down all ports. this pin is shared with rmii- rxer6. an external pull-up resistor (see applications sect ion for value) can be used to set linkhold active while rxer6 is tri-stated during h/w reset. if no pull-up is used, the default linkhold state is set inactive via t he internal pull-down resistor. table 13 miscellaneous signal descriptions ? pqfp (sheet 4 of 4) pin/ball designation symbol type 1 signal description 2 pqfp pbga 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during hardware power-down mode. 3. the linkhold ability is avail able only for stepping 4 (revision d0).
page 54 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions table 14 led signal descript ions ? pqfp (sheet 1 of 2) pin/ball designation symbol type 1 signal description 2,3 pqfp pbga 82 81 80 k3, k2, j1 led0_1_l led0_2_l led0_3_l od, ts, sl, ip port 0 led drivers 1-3. these pins drive led indicators for port 0. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). 77 76 75 j4, j3, h1 led1_1_l led1_2_l led1_3_l od, ts, sl, ip port 1 led drivers 1-3. these pins drive led indicators for port 1. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). 73 72 71 h2, h3, g1 led2_1_l led2_2_l led2_3_l od, ts, sl, ip port 2 led drivers 1-3. these pins drive led indicators for port 2. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). 70 69 68 f2, g3, g4 led3_1_l led3_2_l led3_3_l od, ts, sl, ip port 3 led drivers 1-3. these pins drive led indicators for port 3. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). 180 181 182 k16, k17, j17 led4_1_l led4_2_l led4_3_l od, ts, sl, ip port 4 led drivers 1-3. these pins drive led indicators for port 4. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. the led outputs are three-stated in h/w power-down mode and during h/w reset.
page 55 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions 185 186 187 j15, j16, h17 led5_1_l led5_2_l led5_3_l od, ts, sl, ip port 5 led drivers 1-3. these pins drive led indicators for port 5. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). 189 190 191 h15, h16, g17 led6_1_l led6_2_l led6_3_l od, ts, sl, ip port 6 led drivers 1-3. these pins drive led indicators for port 6. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). 192 193 194 g15, f17, f16 led7_1_l led7_2_l led7_3_l od, ts, sl, ip port 7 led drivers 1-3. these pins drive led indicators for port 7. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). table 15 power supply signal de scriptions ? pqfp (sheet 1 of 2) pin/ball designation symbol type signal description pqfp pbga 65, 78, 184, 196 g13, j14, f5, j5 vccd - digital power supply - core. +2.5 v supply for core digital circuits. 18, 29, 47, 56, 208 a2, a8, c1, c11, d14 vccio - digital power supply - i/o ring. +2.5/3.3 v supply for digital i/o circuits. the digital input circuits running off of this rail, having a ttl-level threshold and over-voltage protection, may be interfaced with 3.3/5.0 v, when the io supply is 3.3 v, and 2.5/3.3/5.0 v when 2.5 v. 98, 164 l13, l5 vccpecl - digital power supply - pecl signal detect inputs. +2.5/3.3 v supply for pecl signal detect input circuits. if fiber mode is not used (t hat is, g_fx/tp_l is pulled low), the vccpecl pins may be tied to gndpecl to save power. 103, 116, 117, 130, 131, 144, 145, 158 n13, p4, p7, p8, p9, p10, p11, p12 vccr - analog power supply - receive. +2.5 v supply for all analog receive circuits. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. table 14 led signal descript ions ? pqfp (sheet 2 of 2) pin/ball designation symbol type 1 signal description 2,3 pqfp pbga 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. the led outputs are three-stated in h/w power-down mode and during h/w reset.
page 56 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions 109, 123, 138, 152 n6, n7, n9, n11, n12 vcct - analog power supply - transmit. +2.5 v supply for all analog transmit circuits. 66, 79, 183, 195 a1, a9, b3, b7, c5, c13, c17, d1, d3, d6, d10, d15, e5, e7, e9, e11, e13, e17, f13, h8, h9, h10, j8, j9, j10, k8, k9, k10 gndd - digital ground. ground return for core digital supplies (vccd). all ground pins can be tied together using a single ground plane. 9, 19, 30, 38, 48, 57, 74, 188, 199, 207 ?gndio- digital gnd - i/o ring. ground return for digital i/o circuits (vccio). 99, 163 m5, m13 gndpecl - digital gnd - pecl signal detect inputs. ground return for pecl signal detect input circuits. 106, 112, 120, 126, 135, 141, 149, 155 p5, p6, p13, r7, r9, r11, r13, u8 gndr - analog ground - receive. ground return for receive analog supply. all ground pins can be tied together using a single ground plane. 113, 127, 134, 148 p14, r1, r3, r5, r15, r17, t17, u2, u4, u6, u10, u12, u14, u16, u17 gndt - analog ground - transmit. ground return for transmit analog supply. all ground pins can be tied together using a single ground plane. 179 k14 sgnd - substrate ground. ground for chip substrate. all ground pins can be tied together using a single ground plane. table 15 power supply signal de scriptions ? pqfp (sheet 2 of 2) pin/ball designation symbol type signal description pqfp pbga 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down.
page 57 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.2 pqfp signal descriptions table 16 unused/reserved pins ? pqfp pin/ball designation symbol type 1 signal description pqfp pbga nc f15, g2, g5, g14, g16, h4, h14, j2, j13, k4, k15 nc ? no connection. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. table 17 receive fifo depth considerations fifosel1 fifosel0 register 18.15 value register 18.14 value 00 1 0 01 1 1 10 0 0 11 0 1
page 58 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments 3.3 bga23 ball assignments the following sections provide bga23 ball loca tion and signal description information for rmii, smii, and ss-smii: ? 3.3.1, rmii bga23 ball list , on page 58 ? 3.3.2, smii bga23 ball list , on page 74 ? 3.3.3, ss-smii bga23 ball list , on page 89 ? 3.4, bga23 signal descriptions , on page 104 figure 5 illustrates the lxt9785/lxt9785e 241-ball bga23 ball locations for rmii, smii, and ss-smii. 3.3.1 rmii bga23 ball list the following tables provide the rmii bga23 ball locations and signal names arranged in alphanumeric order as follows: ? table 18, rmii bga23 ball list in alphanumeric order by signal name ? table 19, rmii bga23 ball list in alphanumeric order by ball location , on page 66 figure 5 241-ball bga23 assignments (top view) b1498-01 a 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 b c d e f g h j k l m n p r t u a b c d e f g h j k l m n p r t u = no ball u6 u5 u4 u3 u2 u1 t6 t5 t4 t3 t2 t1 r6 r5 r4 r3 r2 r1 p6 p5 p4 p3 p2 p1 n6 n5 n4 n3 n2 n1 m6 m5 m4 m3 m2 m1 l6 l5 l4 l3 l2 l1 k6 k5 k4 k3 k2 k1 j6 j5 j4 j3 j2 j1 h6 h5 h4 h3 h2 h1 g6 g5 g4 g3 g2 g1 f17 f16 f15 f14 f13 f12 f11 f10 f9 f8 f7 f6 f5 f4 f3 f2 f1 e17 e16 e15 e14 e13 e12 e11 e10 e9 e8 e7 e6 e5 e4 e3 e2 e1 d17 d16 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 c17 c16 c15 c14 c13 c12 c11 c10 c9 c8 c7 c6 c5 c4 c3 c2 c1 b17 b16 b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b1 a17 a16 a15 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 b2 g7 g8 g9 g10 g11 g12 g13 g14 g15 g16 g17 h7 h8 h9 h10 h11 h12 h13 h14 h15 h16 h17 j7 k7 l7 m7 j8 k8 l8 m8 j9 k9 l9 m9 j10 k10 l10 m10 j11 k11 l11 m11 j12 k12 l12 m12 j13 k13 l13 m13 j14 k14 l14 m14 j15 k15 l15 m15 j16 k16 l16 m16 j17 k17 l17 m17 n7 p7 r7 t7 u7 n8 p8 r8 t8 u8 n9 p9 r9 t9 u9 n10 p10 r10 t10 u10 n11 p11 r11 t11 u11 n12 p12 r12 t12 u12 n13 p13 r13 t13 u13 n14 p14 r14 t14 u14 n15 p15 r15 t15 u15 n16 p16 r16 t16 u16 n17 p17 r17 t17 u17
page 59 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments table 18 rmii bga23 ball list in alphanum eric order by signal name (sheet 1 of 8) signal ball type 1 reference for full description add_0 n2 i, st, id table 32 add_1 n1 i, st, id table 32 add_2 m3 i, st, id table 32 add_3 m2 i, st, id table 32 add_4 l4 i, st, id table 32 amdix_en k1 i, st, ip table 32 cfg_1 m1 i, st, id table 32 cfg_2 l3 i, st, id table 32 cfg_3 l2 i, st, id table 32 crs_dv0 e4 o, ts, sl, id table 24 crs_dv1 c4 o, ts, sl, id table 24 crs_dv2 a5 o, ts, sl, id table 24 crs_dv3 b8 o, ts, sl, id table 24 crs_dv4 b12 o, ts, sl, id table 24 crs_dv5 d12 o, ts, sl, id table 24 crs_dv6 b16 o, ts, sl, id table 24 crs_dv7 e15 o, ts, sl, id table 24 g_fx/tp_l m14 i, st, id table 32 gndd a1 ? table 34 gndd a9 ? table 34 gndd b3 ? table 34 gndd b7 ? table 34 gndd c5 ? table 34 gndd c13 ? table 34 gndd c17 ? table 34 gndd d1 ? table 34 gndd d3 ? table 34 gndd d6 ? table 34 gndd d10 ? table 34 gndd d15 ? table 34 gndd e5 ? table 34 gndd e7 ? table 34 gndd e9 ? table 34 gndd e11 ? table 34 gndd e13 ? table 34 gndd e17 ? table 34 gndd f13 ? table 34 gndd h8 ? table 34
page 60 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments gndd h9 ? table 34 gndd h10 ? table 34 gndd j8 ? table 34 gndd j9 ? table 34 gndd j10 ? table 34 gndd k8 ? table 34 gndd k9 ? table 34 gndd k10 ? table 34 gndpecl m5 ? table 34 gndpecl m13 ? table 34 gndr p5 ? table 34 gndr p6 ? table 34 gndr p13 ? table 34 gndr r7 ? table 34 gndr r9 ? table 34 gndr r11 ? table 34 gndr r13 ? table 34 gndr u8 ? table 34 gndt p14 ? table 34 gndt r1 ? table 34 gndt r3 ? table 34 gndt r5 ? table 34 gndt r15 ? table 34 gndt r17 ? table 34 gndt t17 ? table 34 gndt u2 ? table 34 gndt u4 ? table 34 gndt u6 ? table 34 gndt u10 ? table 34 gndt u12 ? table 34 gndt u14 ? table 34 gndt u16 ? table 34 gndt u17 ? table 34 led0_1_l k3 od, ts, sl, ip table 33 led0_2_l k2 od, ts, sl, ip table 33 led0_3_l j1 od, ts, sl, ip table 33 led1_1_l j4 od, ts, sl, ip table 33 led1_2_l j3 od, ts, sl, ip table 33 led1_3_l h1 od, ts, sl, ip table 33 table 18 rmii bga23 ball list in alphanum eric order by signal name (sheet 2 of 8) signal ball type 1 reference for full description
page 61 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments led2_1_l h2 od, ts, sl, ip table 33 led2_2_l h3 od, ts, sl, ip table 33 led2_3_l g1 od, ts, sl, ip table 33 led3_1_l f2 od, ts, sl, ip table 33 led3_2_l g3 od, ts, sl, ip table 33 led3_3_l g4 od, ts, so, ip table 33 led4_1_l k16 od, ts, sl, ip table 33 led4_2_l k17 od, ts, sl, ip table 33 led4_3_l j17 od, ts, sl, ip table 33 led5_1_l j15 od, ts, sl, ip table 33 led5_2_l j16 od, ts, sl, ip table 33 led5_3_l h17 od, ts, sl, ip table 33 led6_1_l h15 od, ts, sl, ip table 33 led6_2_l h16 od, ts, sl, ip table 33 led6_3_l g17 od, ts, sl, ip table 33 led7_1_l g15 od, ts, sl, ip table 33 led7_2_l f17 od, ts, sl, ip table 33 led7_3_l f16 od, ts, sl, ip table 33 mdc0 e1 i, st, id table 28 mdc1 b10 i, st, id table 28 mddis l1 i, st, id table 28 mdint0_l f1 od, ts, sl, ip table 28 mdint1_l c9 od, ts, sl, ip table 28 mdio0 f3 i/o, ts, sl, ip table 28 mdio1 a10 i/o, ts, sl, ip table 28 modesel0 l16 i, st, id table 32 modesel1 l17 i, st, id table 32 nc f15 ? table 35 nc g2 ? table 35 nc g5 ? table 35 nc g14 ? table 35 nc g16 ? table 35 nc h4 ? table 35 nc h14 ? table 35 nc j2 ? table 35 nc j13 ? table 35 nc k4 ? table 35 nc k15 ? table 35 no ball f6 ? ? table 18 rmii bga23 ball list in alphanum eric order by signal name (sheet 3 of 8) signal ball type 1 reference for full description
page 62 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments no ball f7 ? ? no ball f8 ? ? no ball e8 ? ? no ball e10 no ball f9 ? ? no ball f10 ? ? no ball f11 ? ? no ball f12 ? ? no ball g6 ? ? no ball g7 ? ? no ball g8 ? ? no ball g9 ? ? no ball g10 ? ? no ball g11 ? ? no ball g12 ? ? no ball h5 ? ? no ball h6 ? ? no ball h7 ? ? no ball h11 ? ? no ball h12 ? ? no ball h13 ? ? no ball j6 ? ? no ball j7 ? ? no ball j11 ? ? no ball j12 ? ? no ball k5 ? ? no ball k6 ? ? no ball k7 ? ? no ball k11 ? ? no ball k12 ? ? no ball k13 ? ? no ball l6 ? ? no ball l7 ? ? no ball l8 ? ? no ball l9 ? ? no ball l10 ? ? no ball l11 ? ? no ball l11 ? ? no ball m6 ? ? table 18 rmii bga23 ball list in alphanum eric order by signal name (sheet 4 of 8) signal ball type 1 reference for full description
page 63 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments no ball m7 ? ? no ball m8 ? ? no ball m9 ? ? no ball m10 ? ? no ball m11 ? ? no ball m12 ? ? no ball n8 ? ? no ball n10 ? ? pwrdwn l14 i, st, id table 32 refclk0 e6 i table 24 refclk1 e12 i table 24 reset_l m15 i, st, ip table 32 rxdata0_0 c2 o, ts table 24 rxdata0_1 b1 o, ts, id table 24 rxdata1_0 a3 o, ts table 24 rxdata1_1 b4 o, ts, id table 24 rxdata2_0 b6 o, ts table 24 rxdata2_1 c7 o, ts, id table 24 rxdata3_0 d9 o, ts table 24 rxdata3_1 b9 o, ts, id table 24 rxdata4_0 a13 o, ts table 24 rxdata4_1 c12 o, ts,id table 24 rxdata5_0 b14 o, ts table 24 rxdata5_1 b15 o, ts, id table 24 rxdata6_0 c15 o, ts table 24 rxdata6_1 b17 o, ts, id table 24 rxdata7_0 e16 o, ts table 24 rxdata7_1 f14 o, ts, id table 24 rxer0 (mdix) d2 o, ts, sl, id, i, st table 24 table 32 rxer1 (pause) d5 o, ts, sl, id, i, st table 24 table 32 rxer2 (preasel) d7 o, ts, sl, id, i, st table 24 table 32 rxer3 c8 o, ts, sl, id table 24 rxer4 (fifosel0) a12 o, ts, sl, id, i, st table 24 table 32 rxer5 (fifosel1) a15 o, ts, sl, id, i, st table 24 table 32 table 18 rmii bga23 ball list in alphanum eric order by signal name (sheet 5 of 8) signal ball type 1 reference for full description
page 64 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments rxer6 linkhold a17 o, ts, sl, i, id, st table 24 table 32 rxer7 d17 o, ts, sl, id table 24 sd_2p5v p1 i, st, id table 29 sd0 p2 i table 29 sd1 n4 i table 29 sd2 p3 i table 29 sd3 n5 i table 29 sd4 p15 i table 29 sd5 p16 i table 29 sd6 p17 i table 29 sd7 n17 i table 29 section l15 i, st, id table 32 sgnd k14 ? table 34 tck m16 i, st, id table 31 tdi n14 i, st, ip table 31 tdo n15 o, ts table 31 tms n16 i, st, ip table 31 tpfin0 t1 ao/ai table 30 tpfin1 t4 ao/ai table 30 tpfin2 t5 ao/ai table 30 tpfin3 r8 ao/ai table 30 tpfin4 u9 ao/ai table 30 tpfin5 t12 ao/ai table 30 tpfin6 t13 ao/ai table 30 tpfin7 t16 ao/ai table 30 tpfip0 r2 ao/ai table 30 tpfip1 u3 ao/ai table 30 tpfip2 r6 ao/ai table 30 tpfip3 t8 ao/ai table 30 tpfip4 t9 ao/ai table 30 tpfip5 u13 ao/ai table 30 tpfip6 r12 ao/ai table 30 tpfip7 r16 ao/ai table 30 tpfon0 u1 ao/ai table 30 tpfon1 r4 ao/ai table 30 tpfon2 u5 ao/ai table 30 tpfon3 t7 ao/ai table 30 tpfon4 r10 ao/ai table 30 table 18 rmii bga23 ball list in alphanum eric order by signal name (sheet 6 of 8) signal ball type 1 reference for full description
page 65 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments tpfon5 u11 ao/ai table 30 tpfon6 u15 ao/ai table 30 tpfon7 t15 ao/ai table 30 tpfop0 t2 ao/ai table 30 tpfop1 t3 ao/ai table 30 tpfop2 t6 ao/ai table 30 tpfop3 u7 ao/ai table 30 tpfop4 t10 ao/ai table 30 tpfop5 t11 ao/ai table 30 tpfop6 t14 ao/ai table 30 tpfop7 r14 ao/ai table 30 trst_l m17 i, st, ip table 31 txdata0_0 e2 i, id table 24 txdata0_1 f4 i, id table 24 txdata1_0 c3 i, id table 24 txdata1_1 d4 i, id table 24 txdata2_0 b5 i, id table 24 txdata2_1 a4 i, id table 24 txdata3_0 d8 i, id table 24 txdata3_1 a6 i, id table 24 txdata4_0 a11 i, id table 24 txdata4_1 c10 i, id table 24 txdata5_0 b13 i, id table 24 txdata5_1 d11 i, id table 24 txdata6_0 d13 i, id table 24 txdata6_1 a16 i, id table 24 txdata7_0 e14 i, id table 24 txdata7_1 c16 i, id table 24 txen0 e3 i, id table 24 txen1 b2 i, id table 24 txen2 c6 i, id table 24 txen3 a7 i, id table 24 txen4 b11 i, id table 24 txen5 a14 i, id table 24 txen6 c14 i, id table 24 txen7 d16 i, id table 24 txslew_0 n3 i, st, id table 32 txslew_1 m4 i, st, id table 32 vccd f5 ? table 34 table 18 rmii bga23 ball list in alphanum eric order by signal name (sheet 7 of 8) signal ball type 1 reference for full description
page 66 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments vccd g13 ? table 34 vccd j5 ? table 34 vccd j14 ? table 34 vccio a2 ? table 34 vccio a8 ? table 34 vccio c1 ? table 34 vccio c11 ? table 34 vccio d14 ? table 34 vccpecl l5 ? table 34 vccpecl l13 ? table 34 vccr n13 ? table 34 vccr p4 ? table 34 vccr p7 ? table 34 vccr p8 ? table 34 vccr p9 ? table 34 vccr p10 ? table 34 vccr p11 ? table 34 vccr p12 ? table 34 vcct n6 ? table 34 vcct n7 ? table 34 vcct n9 ? table 34 vcct n11 ? table 34 vcct n12 ? table 34 table 18 rmii bga23 ball list in alphanum eric order by signal name (sheet 8 of 8) signal ball type 1 reference for full description table 19 rmii bga23 ball list in alphanum eric order by ball lo cation (sheet 1 of 9) ball signal type 1 reference for full description a1 gndd ? ta b l e 3 4 a2 vccio ? ta b l e 3 4 a3 rxdata1_0 o, ts ta b l e 2 4 a4 txdata2_1 i, id ta b l e 2 4 a5 crs_dv2 o, ts, sl, id ta b l e 2 4 a6 txdata3_1 i, id ta b l e 2 4 a7 txen3 i, id ta b l e 2 4 a8 vccio ? ta b l e 3 4 a9 gndd ? ta b l e 3 4 a10 mdio1 i/o, ts, sl, ip ta b l e 2 8 a11 txdata4_0 i, id ta b l e 2 4 a12 rxer4 (fifosel0) o, ts, sl, id, i, st ta b l e 2 4 ta b l e 3 2
page 67 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments a13 rxdata4_0 o, ts ta b l e 2 4 a14 txen5 i, id ta b l e 2 4 a15 rxer5 (fifosel1) o, ts, sl, id, i, st ta b l e 2 4 ta b l e 3 2 a16 txdata6_1 i, id ta b l e 2 4 a17 rxer6linkhold o, ts, sl, i, id, st ta b l e 2 4 ta b l e 3 2 b1 rxdata0_1 o, ts, id ta b l e 2 4 b2 txen1 i, id ta b l e 2 4 b3 gndd ? ta b l e 3 4 b4 rxdata1_1 o, ts, id ta b l e 2 4 b5 txdata2_0 i, id ta b l e 2 4 b6 rxdata2_0 o, ts ta b l e 2 4 b7 gndd ? ta b l e 3 4 b8 crs_dv3 o, ts, sl, id ta b l e 2 4 b9 rxdata3_1 o, ts, id ta b l e 2 4 b10 mdc1 i, st, id ta b l e 2 8 b11 txen4 i, id ta b l e 2 4 b12 crs_dv4 o, ts, sl, id ta b l e 2 4 b13 txdata5_0 i, id ta b l e 2 4 b14 rxdata5_0 o, ts ta b l e 2 4 b15 rxdata5_1 o, ts, id ta b l e 2 4 b16 crs_dv6 o, ts, sl, id ta b l e 2 4 b17 rxdata6_1 o, ts, id ta b l e 2 4 c1 vccio ? ta b l e 3 4 c2 rxdata0_0 o, ts ta b l e 2 4 c3 txdata1_0 i, id ta b l e 2 4 c4 crs_dv1 o, ts, sl, id ta b l e 2 4 c5 gndd ? ta b l e 3 4 c6 txen2 i, id ta b l e 2 4 c7 rxdata2_1 o, ts, id ta b l e 2 4 c8 rxer3 o, ts, sl, id ta b l e 2 4 c9 mdint1_l od, ts, sl, ip ta b l e 2 8 c10 txdata4_1 i, id ta b l e 2 4 c11 vccio ? ta b l e 3 4 c12 rxdata4_1 o, ts,id ta b l e 2 4 c13 gndd ? ta b l e 3 4 c14 txen6 i, id ta b l e 2 4 c15 rxdata6_0 o, ts ta b l e 2 4 table 19 rmii bga23 ball list in alphanum eric order by ball lo cation (sheet 2 of 9) ball signal type 1 reference for full description
page 68 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments c16 txdata7_1 i, id ta b l e 2 4 c17 gndd ? ta b l e 3 4 d1 gndd ? ta b l e 3 4 d2 rxer0 (mdix) o, ts, sl, i, id, st ta b l e 2 4 ta b l e 3 2 d3 gndd ? ta b l e 3 4 d4 txdata1_1 i, id ta b l e 2 4 d5 rxer1 (pause) o, ts, sl, id, i, st ta b l e 2 4 ta b l e 3 2 d6 gndd ? ta b l e 3 4 d7 rxer2 (preasel) o, ts, sl, i, id, st ta b l e 2 4 ta b l e 3 2 d8 txdata3_0 i, id ta b l e 2 4 d9 rxdata3_0 o, ts ta b l e 2 4 d10 gndd ? ta b l e 3 4 d11 txdata5_1 i, id ta b l e 2 4 d12 crs_dv5 o, ts, sl, id ta b l e 2 4 d13 txdata6_0 i, id ta b l e 2 4 d14 vccio ? ta b l e 3 4 d15 gndd ? ta b l e 3 4 d16 txen7 i, id ta b l e 2 4 d17 rxer7 o, ts, sl, id ta b l e 2 4 e1 mdc0 i, st, id ta b l e 2 8 e2 txdata0_0 i, id ta b l e 2 4 e3 txen0 i, id ta b l e 2 4 e4 crs_dv0 o, ts, sl, id ta b l e 2 4 e5 gndd ? ta b l e 3 4 e6 refclk0 i ta b l e 2 4 e7 gndd ? ta b l e 3 4 e8 no ball ? ? e9 gndd ? ta b l e 3 4 e10 no ball e11 gndd ? ta b l e 3 4 e12 refclk1 i ta b l e 2 4 e13 gndd ? ta b l e 3 4 e14 txdata7_0 i, id ta b l e 2 4 e15 crs_dv7 o, ts, sl, id? ta b l e 2 4 e16 rxdata7_0 o, ts ta b l e 2 4 e17 gndd ? ta b l e 3 4 f1 mdint0_l od, ts, sl, ip ta b l e 2 8 table 19 rmii bga23 ball list in alphanum eric order by ball lo cation (sheet 3 of 9) ball signal type 1 reference for full description
page 69 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments f2 led3_1_l od, ts, sl, ip ta b l e 3 3 f3 mdio0 i/o, ts, sl, ip ta b l e 2 8 f4 txdata0_1 i, id ta b l e 2 4 f5 vccd ? ta b l e 3 4 f6 no ball ? ? f7 no ball ? ? f8 no ball ? ? f9 no ball ? ? f10 no ball ? ? f11 no ball ? ? f12 no ball ? ? f13 gndd ? ta b l e 3 4 f14 rxdata7_1 o, ts, id ta b l e 2 4 f15 nc ? ta b l e 3 5 f16 led7_3_l od, ts, sl, ip ta b l e 3 3 f17 led7_2_l od, ts, sl, ip ta b l e 3 3 g1 led2_3_l od, ts, sl, ip ta b l e 3 3 g2 nc ? ta b l e 3 5 g3 led3_2_l od, ts, sl, ip ta b l e 3 3 g4 led3_3_l od, ts, so, ip ta b l e 3 3 g5 nc ? ta b l e 3 5 g6 no ball ? ? g7 no ball ? ? g8 no ball ? ? g9 no ball ? ? g10 no ball ? ? g11 no ball ? ? g12 no ball ? ? g13 vccd ? ta b l e 3 4 g14 nc ? ta b l e 3 5 g15 led7_1_l od, ts, sl, ip ta b l e 3 3 g16 nc ? ta b l e 3 5 g17 led6_3_l od, ts, sl, ip ta b l e 3 3 h1 led1_3_l od, ts, sl, ip ta b l e 3 3 h2 led2_1_l od, ts, sl, ip ta b l e 3 3 h3 led2_2_l od, ts, sl, ip ta b l e 3 3 h4 nc ? ta b l e 3 5 h5 no ball ? ? h6 no ball ? ? table 19 rmii bga23 ball list in alphanum eric order by ball lo cation (sheet 4 of 9) ball signal type 1 reference for full description
page 70 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments h7 no ball ? ? h8 gndd ? ta b l e 3 4 h9 gndd ? ta b l e 3 4 h10 gndd ? ta b l e 3 4 h11 no ball ? ? h12 no ball ? ? h13 no ball ? ? h14 nc ? ta b l e 3 5 h15 led6_1_l od, ts, sl, ip ta b l e 3 3 h16 led6_2_l od, ts, sl, ip ta b l e 3 3 h17 led5_3_l od, ts, sl, ip ta b l e 3 3 j1 led0_3_l od, ts, sl, ip ta b l e 3 3 j2 nc ? ta b l e 3 5 j3 led1_2_l od, ts, sl, ip ta b l e 3 3 j4 led1_1_l od, ts, sl, ip ta b l e 3 3 j5 vccd ? ta b l e 3 4 j6 no ball ? ? j7 no ball ? ? j8 gndd ? ta b l e 3 4 j9 gndd ? ta b l e 3 4 j10 gndd ? ta b l e 3 4 j11 no ball ? ? j12 no ball ? ? j13 nc ? ta b l e 3 5 j14 vccd ? ta b l e 3 4 j15 led5_1_l od, ts, sl, ip ta b l e 3 3 j16 led5_2_l od, ts, sl, ip ta b l e 3 3 j17 led4_3_l od, ts, sl, ip ta b l e 3 3 k1 amdix_en i, st, ip ta b l e 3 2 k2 led0_2_l od, ts, sl, ip ta b l e 3 3 k3 led0_1_l od, ts, sl, ip ta b l e 3 3 k4 nc ? ta b l e 3 5 k5 no ball ? ? k6 no ball ? ? k7 no ball ? ? k8 gndd ? ta b l e 3 4 k9 gndd ? ta b l e 3 4 k10 gndd ? ta b l e 3 4 k11 no ball ? ? table 19 rmii bga23 ball list in alphanum eric order by ball lo cation (sheet 5 of 9) ball signal type 1 reference for full description
page 71 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments k12 no ball ? ? k13 no ball ? ? k14 sgnd ? ta b l e 3 4 k15 nc ? ta b l e 3 5 k16 led4_1_l od, ts, sl, ip ta b l e 3 3 k17 led4_2_l od, ts, sl, ip ta b l e 3 3 l1 mddis i, st, id ta b l e 2 8 l2 cfg_3 i, st, id ta b l e 3 2 l3 cfg_2 i, st, id ta b l e 3 2 l4 add_4 i, st, id ta b l e 3 2 l5 vccpecl ? ta b l e 3 4 l6 no ball ? ? l7 no ball ? ? l8 no ball ? ? l9 no ball ? ? l10 no ball ? ? l11 no ball ? ? l11 no ball ? ? l13 vccpecl ? ta b l e 3 4 l14 pwrdwn i, st, id ta b l e 3 2 l15 section i, st, id ta b l e 3 2 l16 modesel0 i, st, id ta b l e 3 2 l17 modesel1 i, st, id ta b l e 3 2 m1 cfg_1 i, st, id ta b l e 3 2 m2 add_3 i, st, id ta b l e 3 2 m3 add_2 i, st, id ta b l e 3 2 m4 txslew_1 i, st, id ta b l e 3 2 m5 gndpecl ? ta b l e 3 4 m6 no ball ? ? m7 no ball ? ? m8 no ball ? ? m9 no ball ? ? m10 no ball ? ? m11 no ball ? ? m12 no ball ? ? m13 gndpecl ? ta b l e 3 4 m14 g_fx/tp_l i, st, id ta b l e 3 2 m15 reset_l i, st, ip ta b l e 3 2 m16 tck i, st, id ta b l e 3 1 table 19 rmii bga23 ball list in alphanum eric order by ball lo cation (sheet 6 of 9) ball signal type 1 reference for full description
page 72 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments m17 trst_l i, st, ip ta b l e 3 1 n1 add_1 i, st, id ta b l e 3 2 n2 add_0 i, st, id ta b l e 3 2 n3 txslew_0 i, st, id ta b l e 3 2 n4 sd1 i ta b l e 2 9 n5 sd3 i ta b l e 2 9 n6 vcct ? ta b l e 3 4 n7 vcct ? ta b l e 3 4 n8 no ball ? ? n9 vcct ? ta b l e 3 4 n10 no ball ? ? n11 vcct ? ta b l e 3 4 n12 vcct ? ta b l e 3 4 n13 vccr ? ta b l e 3 4 n14 tdi i, st, ip ta b l e 3 1 n15 tdo o, ts ta b l e 3 1 n16 tms i, st, ip ta b l e 3 1 n17 sd7 i ta b l e 2 9 p1 sd_2p5v i, st, id ta b l e 2 9 p2 sd0 i ta b l e 2 9 p3 sd2 i ta b l e 2 9 p4 vccr ? ta b l e 3 4 p5 gndr ? ta b l e 3 4 p6 gndr ? ta b l e 3 4 p7 vccr ? ta b l e 3 4 p8 vccr ? ta b l e 3 4 p9 vccr ? ta b l e 3 4 p10 vccr ? ta b l e 3 4 p11 vccr ? ta b l e 3 4 p12 vccr ? ta b l e 3 4 p13 gndr ? ta b l e 3 4 p14 gndt ? ta b l e 3 4 p15 sd4 i ta b l e 2 9 p16 sd5 i ta b l e 2 9 p17 sd6 i ta b l e 2 9 r1 gndt ? ta b l e 3 4 r2 tpfip0 ao/ai ta b l e 3 0 r3 gndt ? ta b l e 3 4 r4 tpfon1 ao/ai ta b l e 3 0 table 19 rmii bga23 ball list in alphanum eric order by ball lo cation (sheet 7 of 9) ball signal type 1 reference for full description
page 73 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments r5 gndt ? ta b l e 3 4 r6 tpfip2 ao/ai ta b l e 3 0 r7 gndr ? ta b l e 3 4 r8 tpfin3 ao/ai ta b l e 3 0 r9 gndr ? ta b l e 3 4 r10 tpfon4 ao/ai ta b l e 3 0 r11 gndr ? ta b l e 3 4 r12 tpfip6 ao/ai ta b l e 3 0 r13 gndr ? ta b l e 3 4 r14 tpfop7 ao/ai ta b l e 3 0 r15 gndt ? ta b l e 3 4 r16 tpfip7 ao/ai ta b l e 3 0 r17 gndt ? ta b l e 3 4 t1 tpfin0 ao/ai ta b l e 3 0 t2 tpfop0 ao/ai ta b l e 3 0 t3 tpfop1 ao/ai ta b l e 3 0 t4 tpfin1 ao/ai ta b l e 3 0 t5 tpfin2 ao/ai ta b l e 3 0 t6 tpfop2 ao/ai ta b l e 3 0 t7 tpfon3 ao/ai ta b l e 3 0 t8 tpfip3 ao/ai ta b l e 3 0 t9 tpfip4 ao/ai ta b l e 3 0 t10 tpfop4 ao/ai ta b l e 3 0 t11 tpfop5 ao/ai ta b l e 3 0 t12 tpfin5 ao/ai ta b l e 3 0 t13 tpfin6 ao/ai ta b l e 3 0 t14 tpfop6 ao/ai ta b l e 3 0 t15 tpfon7 ao/ai ta b l e 3 0 t16 tpfin7 ao/ai ta b l e 3 0 t17 gndt ? ta b l e 3 4 u1 tpfon0 ao/ai ta b l e 3 0 u2 gndt ? ta b l e 3 4 u3 tpfip1 ao/ai ta b l e 3 0 u4 gndt ? ta b l e 3 4 u5 tpfon2 ao/ai ta b l e 3 0 u6 gndt ? ta b l e 3 4 u7 tpfop3 ao/ai ta b l e 3 0 u8 gndr ? ta b l e 3 4 u9 tpfin4 ao/ai ta b l e 3 0 table 19 rmii bga23 ball list in alphanum eric order by ball lo cation (sheet 8 of 9) ball signal type 1 reference for full description
page 74 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments 3.3.2 smii bga23 ball list the following tables provide the smii ball lo cations and signal names arranged in alphanumeric order as follows: ? table 20, smii bga23 ball list in alph anumeric order by signal name ? table 21, smii bga23 ball list in alph anumeric order by ball location , on page 82 u10 gndt ? ta b l e 3 4 u11 tpfon5 ao/ai ta b l e 3 0 u12 gndt ? ta b l e 3 4 u13 tpfip5 ao/ai ta b l e 3 0 u14 gndt ? ta b l e 3 4 u15 tpfon6 ao/ai ta b l e 3 0 u16 gndt ? ta b l e 3 4 u17 gndt ? ta b l e 3 4 table 19 rmii bga23 ball list in alphanum eric order by ball lo cation (sheet 9 of 9) ball signal type 1 reference for full description table 20 smii bga23 ball list in alphanum eric order by signal name (sheet 1 of 8) signal ball type 1 reference for full description add_0 n2 i, st, id table 32 add_1 n1 i, st, id table 32 add_2 m3 i, st, id table 32 add_3 m2 i, st, id table 32 add_4 l4 i, st, id table 32 amdix_en k1 i, st, ip table 32 cfg_1 m1 i, st, id table 32 cfg_2 l3 i, st, id table 32 cfg_3 l2 i, st, id table 32 fifosel0 a12 o, ts, sl, id, i, st table 32 fifosel1 a15 o, ts, sl, id, i, st table 32 g_fx/tp_l m14 i, st, id table 32 gndd a1 ? table 34 gndd a9 ? table 34 gndd b3 ? table 34 gndd b7 ? table 34 gndd c5 ? table 34 gndd c13 ? table 34 gndd c17 ? table 34 gndd d1 ? table 34 gndd d3 ? table 34 gndd d6 ? table 34
page 75 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments gndd d10 ? table 34 gndd d15 ? table 34 gndd e5 ? table 34 gndd e7 ? table 34 gndd e9 ? table 34 gndd e11 ? table 34 gndd e13 ? table 34 gndd e17 ? table 34 gndd f13 ? table 34 gndd h8 ? table 34 gndd h9 ? table 34 gndd h10 ? table 34 gndd j8 ? table 34 gndd j9 ? table 34 gndd j10 ? table 34 gndd k8 ? table 34 gndd k9 ? table 34 gndd k10 ? table 34 gndpecl m5 ? table 34 gndpecl m13 ? table 34 gndr p5 ? table 34 gndr p6 ? table 34 gndr p13 ? table 34 gndr r7 ? table 34 gndr r9 ? table 34 gndr r11 ? table 34 gndr r13 ? table 34 gndr u8 ? table 34 gndt p14 ? table 34 gndt r1 ? table 34 gndt r3 ? table 34 gndt r5 ? table 34 gndt r15 ? table 34 gndt r17 ? table 34 gndt t17 ? table 34 gndt u2 ? table 34 gndt u4 ? table 34 gndt u6 ? table 34 gndt u10 ? table 34 table 20 smii bga23 ball list in alphanum eric order by signal name (sheet 2 of 8) signal ball type 1 reference for full description
page 76 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments gndt u12 ? table 34 gndt u14 ? table 34 gndt u16 ? table 34 gndt u17 ? table 34 led0_1_l k3 od, ts, sl, ip table 33 led0_2_l k2 od, ts, sl, ip table 33 led0_3_l j1 od, ts, sl, ip table 33 led1_1_l j4 od, ts, sl, ip table 33 led1_2_l j3 od, ts, sl, ip table 33 led1_3_l h1 od, ts, sl, ip table 33 led2_1_l h2 od, ts, sl, ip table 33 led2_2_l h3 od, ts, sl, ip table 33 led2_3_l g1 od, ts, sl, ip table 33 led3_1_l f2 od, ts, sl, ip table 33 led3_2_l g3 od, ts, sl, ip table 33 led3_3_l g4 od, ts, so, ip table 33 led4_1_l k16 od, ts, sl, ip table 33 led4_2_l k17 od, ts, sl, ip table 33 led4_3_l j17 od, ts, sl, ip table 33 led5_1_l j15 od, ts, sl, ip table 33 led5_2_l j16 od, ts, sl, ip table 33 led5_3_l h17 od, ts, sl, ip table 33 led6_1_l h15 od, ts, sl, ip table 33 led6_2_l h16 od, ts, sl, ip table 33 led6_3_l g17 od, ts, sl, ip table 33 led7_1_l g15 od, ts, sl, ip table 33 led7_2_l f17 od, ts, sl, ip table 33 led7_3_l f16 od, ts, sl, ip table 33 mdc0 e1 i, st, id table 28 mdc1 b10 i, st, id table 28 mddis l1 i, st, id table 28 mdint0_l f1 od, ts, sl, ip table 28 mdint1_l c9 od, ts, sl, ip table 28 mdio0 f3 i/o, ts, sl, ip table 28 mdio1 a10 i/o, ts, sl, ip table 28 mdix d2 i, id, st table 32 modesel0 l16 i, st, id table 32 modesel1 l17 i, st, id table 32 nc a4 ? table 35 table 20 smii bga23 ball list in alphanum eric order by signal name (sheet 3 of 8) signal ball type 1 reference for full description
page 77 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments nc a5 ? table 35 nc a7 ? table 35 nc a14 ? table 35 nc a16 ? table 35 nc b1 ? table 35 nc b2 ? table 35 nc b4 ? table 35 nc b8 ? table 35 nc b9 ? table 35 nc b11 ? table 35 nc b12 ? table 35 nc b15 ? table 35 nc b16 ? table 35 nc b17 ? table 35 nc c4 ? table 35 nc c6 ? table 35 nc c7 ? table 35 nc c8 ? table 35 nc c10 ? table 35 nc c12 ? table 35 nc c14 ? table 35 nc d4 ? table 35 nc d11 ? table 35 nc d12 ? table 35 nc d16 ? table 35 nc d17 ? table 35 nc e3 ? table 35 nc e4 ? table 35 nc e15 ? table 35 nc f4 ? table 35 nc f14 ? table 35 nc f15 ? table 35 nc g2 ? table 35 nc g5 ? table 35 nc g14 ? table 35 nc g16 ? table 35 nc h4 ? table 35 nc h14 ? table 35 nc j2 ? table 35 table 20 smii bga23 ball list in alphanum eric order by signal name (sheet 4 of 8) signal ball type 1 reference for full description
page 78 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments nc j13 ? table 35 nc k4 ? table 35 nc k15 ? table 35 nc/linkhold a17 i, id, st table 35 table 32 no ball f6 ? ? no ball f7 ? ? no ball f8 ? ? no ball e8 ? ? no ball e10 ? no ball f9 ? ? no ball f10 ? ? no ball f11 ? ? no ball f12 ? ? no ball g6 ? ? no ball g7 ? ? no ball g8 ? ? no ball g9 ? ? no ball g10 ? ? no ball g11 ? ? no ball g12 ? ? no ball h5 ? ? no ball h6 ? ? no ball h7 ? ? no ball h11 ? ? no ball h12 ? ? no ball h13 ? ? no ball j6 ? ? no ball j7 ? ? no ball j11 ? ? no ball j12 ? ? no ball k5 ? ? no ball k6 ? ? no ball k7 ? ? no ball k11 ? ? no ball k12 ? ? no ball k13 ? ? no ball l6 ? ? no ball l7 ? ? table 20 smii bga23 ball list in alphanum eric order by signal name (sheet 5 of 8) signal ball type 1 reference for full description
page 79 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments no ball l8 ? ? no ball l9 ? ? no ball l10 ? ? no ball l11 ? ? no ball l11 ? ? no ball m6 ? ? no ball m7 ? ? no ball m8 ? ? no ball m9 ? ? no ball m10 ? ? no ball m11 ? ? no ball m12 ? ? no ball n8 ? ? no ball n10 ? ? pause d5 o, ts, sl, id, i, st table 32 preasel d7 i, id, st table 32 pwrdwn l14 i, id, st table 32 refclk0 e6 i table 25 refclk1 e12 i table 25 reset_l m15 i, st, ip table 32 rxdata0 c2 o, ts, id table 26 rxdata1 a3 o, ts, id table 26 rxdata2 b6 o, ts, id table 26 rxdata3 d9 o, ts, id table 26 rxdata4 a13 o, ts, id table 26 rxdata5 b14 o, ts, id table 26 rxdata6 c15 o, ts, id table 26 rxdata7 e16 o, ts, id table 26 sd_2p5v p1 i, st, id table 29 sd0 p2 i table 29 sd1 n4 i table 29 sd2 p3 i table 29 sd3 n5 i table 29 sd4 p15 i table 29 sd5 p16 i table 29 sd6 p17 i table 29 sd7 n17 i table 29 section l15 i, st, id table 32 sgnd k14 ? table 34 table 20 smii bga23 ball list in alphanum eric order by signal name (sheet 6 of 8) signal ball type 1 reference for full description
page 80 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments sync0 a6 i, id table 26 sync1 c16 i, id table 26 tck m16 i, st, id table 31 tdi n14 i, st, ip table 31 tdo n15 o, ts table 31 tms n16 i, st, ip table 31 tpfin0 t1 ao/ai table 30 tpfin1 t4 ao/ai table 30 tpfin2 t5 ao/ai table 30 tpfin3 r8 ao/ai table 30 tpfin4 u9 ao/ai table 30 tpfin5 t12 ao/ai table 30 tpfin6 t13 ao/ai table 30 tpfin7 t16 ao/ai table 30 tpfip0 r2 ao/ai table 30 tpfip1 u3 ao/ai table 30 tpfip2 r6 ao/ai table 30 tpfip3 t8 ao/ai table 30 tpfip4 t9 ao/ai table 30 tpfip5 u13 ao/ai table 30 tpfip6 r12 ao/ai table 30 tpfip7 r16 ao/ai table 30 tpfon0 u1 ao/ai table 30 tpfon1 r4 ao/ai table 30 tpfon2 u5 ao/ai table 30 tpfon3 t7 ao/ai table 30 tpfon4 r10 ao/ai table 30 tpfon5 u11 ao/ai table 30 tpfon6 u15 ao/ai table 30 tpfon7 t15 ao/ai table 30 tpfop0 t2 ao/ai table 30 tpfop1 t3 ao/ai table 30 tpfop2 t6 ao/ai table 30 tpfop3 u7 ao/ai table 30 tpfop4 t10 ao/ai table 30 tpfop5 t11 ao/ai table 30 tpfop6 t14 ao/ai table 30 tpfop7 r14 ao/ai table 30 trst_l m17 i, st, ip table 31 table 20 smii bga23 ball list in alphanum eric order by signal name (sheet 7 of 8) signal ball type 1 reference for full description
page 81 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments txdata0 e2 i, id table 25 txdata1 c3 i, id table 25 txdata2 b5 i, id table 25 txdata3 d8 i, id table 25 txdata4 a11 i, id table 25 txdata5 b13 i, id table 25 txdata6 d13 i, id table 25 txdata7 e14 i, id table 25 txslew_0 n3 i, st, id table 32 txslew_1 m4 i, st, id table 32 vccd f5 ? table 34 vccd g13 ? table 34 vccd j5 ? table 34 vccd j14 ? table 34 vccio a2 ? table 34 vccio a8 ? table 34 vccio c1 ? table 34 vccio c11 ? table 34 vccio d14 ? table 34 vccpecl l5 ? table 34 vccpecl l13 ? table 34 vccr n13 ? table 34 vccr p4 ? table 34 vccr p7 ? table 34 vccr p8 ? table 34 vccr p9 ? table 34 vccr p10 ? table 34 vccr p11 ? table 34 vccr p12 ? table 34 vcct n6 ? table 34 vcct n7 ? table 34 vcct n9 ? table 34 vcct n11 ? table 34 vcct n12 ? table 34 table 20 smii bga23 ball list in alphanum eric order by signal name (sheet 8 of 8) signal ball type 1 reference for full description
page 82 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments table 21 smii bga23 ball list in alphanum eric order by ball location (sheet 1 of 8) ball signal type 1 reference for full description a1 gndd ? table 34 a2 vccio ? table 34 a3 rxdata1 o, ts, id table 26 a4 nc ? table 35 a5 nc ? table 35 a6 sync0 i, id table 26 a7 nc ? table 35 a8 vccio ? table 34 a9 gndd ? table 34 a10 mdio1 i/o, ts, sl, ip table 28 a11 txdata4 i, id table 25 a12 fifosel0 o, ts, sl, id, i, st table 32 a13 rxdata4 o, ts, id table 26 a14 nc ? table 35 a15 fifosel1 o, ts, sl, id, i, st table 32 a16 nc ? table 35 a17 nc/linkhold i, id, st table 35 table 32 b1 nc ? table 35 b2 nc ? table 35 b3 gndd ? table 34 b4 nc ? table 35 b5 txdata2 i, id table 25 b6 rxdata2 o, ts, id table 26 b7 gndd ? table 34 b8 nc ? table 35 b9 nc ? table 35 b10 mdc1 i, st, id table 28 b11 nc ? table 35 b12 nc ? table 35 b13 txdata5 i, id table 25 b14 rxdata5 o, ts, id table 26 b15 nc ? table 35 b16 nc ? table 35 b17 nc ? table 35 c1 vccio ? table 34 c2 rxdata0 o, ts, id table 26 c3 txdata1 i, id table 25
page 83 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments c4 nc ? table 35 c5 gndd ? table 34 c6 nc ? table 35 c7 nc ? table 35 c8 nc ? table 35 c9 mdint1_l od, ts, sl, ip table 28 c10 nc ? table 35 c11 vccio ? table 34 c12 nc ? table 35 c13 gndd ? table 34 c14 nc ? table 35 c15 rxdata6 o, ts, id table 26 c16 sync1 i, id table 26 c17 gndd ? table 34 d1 gndd ? table 34 d2 mdix i, id, st table 32 d3 gndd ? table 34 d4 nc ? table 35 d5 pause o, ts, sl, id, i, st table 32 d6 gndd ? table 34 d7 preasel i, id, st table 32 d8 txdata3 i, id table 25 d9 rxdata3 o, ts, id table 26 d10 gndd ? table 34 d11 nc ? table 35 d12 nc ? table 35 d13 txdata6 i, id table 25 d14 vccio ? table 34 d15 gndd ? table 34 d16 nc ? table 35 d17 nc ? table 35 e1 mdc0 i, st, id table 28 e2 txdata0 i, id table 25 e3 nc ? table 35 e4 nc ? table 35 e5 gndd ? table 34 e6 refclk0 i table 25 e7 gndd ? table 34 e8 no ball ? ? table 21 smii bga23 ball list in alphanum eric order by ball location (sheet 2 of 8) ball signal type 1 reference for full description
page 84 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments e9 gndd ? table 34 e10 no ball ? e11 gndd ? table 34 e12 refclk1 i table 25 e13 gndd ? table 34 e14 txdata7 i, id table 25 e15 nc ? table 35 e16 rxdata7 o, ts, id table 26 e17 gndd ? table 34 f1 mdint0_l od, ts, sl, ip table 28 f2 led3_1_l od, ts, sl, ip table 33 f3 mdio0 i/o, ts, sl, ip table 28 f4 nc ? table 35 f5 vccd ? table 34 f6 no ball ? ? f7 no ball ? ? f8 no ball ? ? f9 no ball ? ? f10 no ball ? ? f11 no ball ? ? f12 no ball ? ? f13 gndd ? table 34 f14 nc ? table 35 f15 nc ? table 35 f16 led7_3_l od, ts, sl, ip table 33 f17 led7_2_l od, ts, sl, ip table 33 g1 led2_3_l od, ts, sl, ip table 33 g2 nc ? table 35 g3 led3_2_l od, ts, sl, ip table 33 g4 led3_3_l od, ts, so, ip table 33 g5 nc ? table 35 g6 no ball ? ? g7 no ball ? ? g8 no ball ? ? g9 no ball ? ? g10 no ball ? ? g11 no ball ? ? g12 no ball ? ? g13 vccd ? table 34 table 21 smii bga23 ball list in alphanum eric order by ball location (sheet 3 of 8) ball signal type 1 reference for full description
page 85 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments g14 nc ? table 35 g15 led7_1_l od, ts, sl, ip table 33 g16 nc ? table 35 g17 led6_3_l od, ts, sl, ip table 33 h1 led1_3_l od, ts, sl, ip table 33 h2 led2_1_l od, ts, sl, ip table 33 h3 led2_2_l od, ts, sl, ip table 33 h4 nc ? table 35 h5 no ball ? ? h6 no ball ? ? h7 no ball ? ? h8 gndd ? table 34 h9 gndd ? table 34 h10 gndd ? table 34 h11 no ball ? ? h12 no ball ? ? h13 no ball ? ? h14 nc ? table 35 h15 led6_1_l od, ts, sl, ip table 33 h16 led6_2_l od, ts, sl, ip table 33 h17 led5_3_l od, ts, sl, ip table 33 j1 led0_3_l od, ts, sl, ip table 33 j2 nc ? table 35 j3 led1_2_l od, ts, sl, ip table 33 j4 led1_1_l od, ts, sl, ip table 33 j5 vccd ? table 34 j6 no ball ? ? j7 no ball ? ? j8 gndd ? table 34 j9 gndd ? table 34 j10 gndd ? table 34 j11 no ball ? ? j12 no ball ? ? j13 nc ? table 35 j14 vccd ? table 34 j15 led5_1_l od, ts, sl, ip table 33 j16 led5_2_l od, ts, sl, ip table 33 j17 led4_3_l od, ts, sl, ip table 33 k1 amdix_en i, st, ip table 32 table 21 smii bga23 ball list in alphanum eric order by ball location (sheet 4 of 8) ball signal type 1 reference for full description
page 86 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments k2 led0_2_l od, ts, sl, ip table 33 k3 led0_1_l od, ts, sl, ip table 33 k4 nc ? table 35 k5 no ball ? ? k6 no ball ? ? k7 no ball ? ? k8 gndd ? table 34 k9 gndd ? table 34 k10 gndd ? table 34 k11 no ball ? ? k12 no ball ? ? k13 no ball ? ? k14 sgnd ? table 34 k15 nc ? table 35 k16 led4_1_l od, ts, sl, ip table 33 k17 led4_2_l od, ts, sl, ip table 33 l1 mddis i, st, id table 28 l2 cfg_3 i, st, id table 32 l3 cfg_2 i, st, id table 32 l4 add_4 i, st, id table 32 l5 vccpecl ? table 34 l6 no ball ? ? l7 no ball ? ? l8 no ball ? ? l9 no ball ? ? l10 no ball ? ? l11 no ball ? ? l11 no ball ? ? l13 vccpecl ? table 34 l14 pwrdwn i, id, st table 32 l15 section i, st, id table 32 l16 modesel0 i, st, id table 32 l17 modesel1 i, st, id table 32 m1 cfg_1 i, st, id table 32 m2 add_3 i, st, id table 32 m3 add_2 i, st, id table 32 m4 txslew_1 i, st, id table 32 m5 gndpecl ? table 34 m6 no ball ? ? table 21 smii bga23 ball list in alphanum eric order by ball location (sheet 5 of 8) ball signal type 1 reference for full description
page 87 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments m7 no ball ? ? m8 no ball ? ? m9 no ball ? ? m10 no ball ? ? m11 no ball ? ? m12 no ball ? ? m13 gndpecl ? table 34 m14 g_fx/tp_l i, st, id table 32 m15 reset_l i, st, ip table 32 m16 tck i, st, id table 31 m17 trst_l i, st, ip table 31 n1 add_1 i, st, id table 32 n2 add_0 i, st, id table 32 n3 txslew_0 i, st, id table 32 n4 sd1 i table 29 n5 sd3 i table 29 n6 vcct ? table 34 n7 vcct ? table 34 n8 no ball ? ? n9 vcct ? table 34 n10 no ball ? ? n11 vcct ? table 34 n12 vcct ? table 34 n13 vccr ? table 34 n14 tdi i, st, ip table 31 n15 tdo o, ts table 31 n16 tms i, st, ip table 31 n17 sd7 i table 29 p1 sd_2p5v i, st, id table 29 p2 sd0 i table 29 p3 sd2 i table 29 p4 vccr ? table 34 p5 gndr ? table 34 p6 gndr ? table 34 p7 vccr ? table 34 p8 vccr ? table 34 p9 vccr ? table 34 p10 vccr ? table 34 p11 vccr ? table 34 table 21 smii bga23 ball list in alphanum eric order by ball location (sheet 6 of 8) ball signal type 1 reference for full description
page 88 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments p12 vccr ? table 34 p13 gndr ? table 34 p14 gndt ? table 34 p15 sd4 i table 29 p16 sd5 i table 29 p17 sd6 i table 29 r1 gndt ? table 34 r2 tpfip0 ao/ai table 30 r3 gndt ? table 34 r4 tpfon1 ao/ai table 30 r5 gndt ? table 34 r6 tpfip2 ao/ai table 30 r7 gndr ? table 34 r8 tpfin3 ao/ai table 30 r9 gndr ? table 34 r10 tpfon4 ao/ai table 30 r11 gndr ? table 34 r12 tpfip6 ao/ai table 30 r13 gndr ? table 34 r14 tpfop7 ao/ai table 30 r15 gndt ? table 34 r16 tpfip7 ao/ai table 30 r17 gndt ? table 34 t1 tpfin0 ao/ai table 30 t2 tpfop0 ao/ai table 30 t3 tpfop1 ao/ai table 30 t4 tpfin1 ao/ai table 30 t5 tpfin2 ao/ai table 30 t6 tpfop2 ao/ai table 30 t7 tpfon3 ao/ai table 30 t8 tpfip3 ao/ai table 30 t9 tpfip4 ao/ai table 30 t10 tpfop4 ao/ai table 30 t11 tpfop5 ao/ai table 30 t12 tpfin5 ao/ai table 30 t13 tpfin6 ao/ai table 30 t14 tpfop6 ao/ai table 30 t15 tpfon7 ao/ai table 30 t16 tpfin7 ao/ai table 30 table 21 smii bga23 ball list in alphanum eric order by ball location (sheet 7 of 8) ball signal type 1 reference for full description
page 89 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments 3.3.3 ss-smii bga23 ball list the following tables provide the ss-smii ba ll locations and signal names arranged in alphanumeric order as follows: ? table 22, ss-smii bga23 ball list in alphanumeric order by signal name ? table 23, ss-smii bga23 ball list in alphanumeric order by ball location , on page 97 t17 gndt ? table 34 u1 tpfon0 ao/ai table 30 u2 gndt ? table 34 u3 tpfip1 ao/ai table 30 u4 gndt ? table 34 u5 tpfon2 ao/ai table 30 u6 gndt ? table 34 u7 tpfop3 ao/ai table 30 u8 gndr ? table 34 u9 tpfin4 ao/ai table 30 u10 gndt ? table 34 u11 tpfon5 ao/ai table 30 u12 gndt ? table 34 u13 tpfip5 ao/ai table 30 u14 gndt ? table 34 u15 tpfon6 ao/ai table 30 u16 gndt ? table 34 u17 gndt ? table 34 table 21 smii bga23 ball list in alphanum eric order by ball location (sheet 8 of 8) ball signal type 1 reference for full description table 22 ss-smii bga23 ball list in alphan umeric order by signal name (sheet 1 of 9) signal ball type 1 reference for full description add_0 n2 i, st, id table 32 add_1 n1 i, st, id table 32 add_2 m3 i, st, id table 32 add_3 m2 i, st, id table 32 add_4 l4 i, st, id table 32 amdix_en k1 i, st, ip table 32 cfg_1 m1 i, st, id table 32 cfg_2 l3 i, st, id table 32 cfg_3 l2 i, st, id table 32 fifosel0 a12 i, id, st table 32 fifosel1 a15 i, id, st table 32 g_fx/tp_l m14 i, id, st table 32
page 90 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments gndd a1 ? table 34 gndd a9 ? table 34 gndd b3 ? table 34 gndd b7 ? table 34 gndd c5 ? table 34 gndd c13 ? table 34 gndd c17 ? table 34 gndd d1 ? table 34 gndd d3 ? table 34 gndd d6 ? table 34 gndd d10 ? table 34 gndd d15 ? table 34 gndd e5 ? table 34 gndd e7 ? table 34 gndd e9 ? table 34 gndd e11 ? table 34 gndd e13 ? table 34 gndd e17 ? table 34 gndd f13 ? table 34 gndd h8 ? table 34 gndd h9 ? table 34 gndd h10 ? table 34 gndd j8 ? table 34 gndd j9 ? table 34 gndd j10 ? table 34 gndd k8 ? table 34 gndd k9 ? table 34 gndd k10 ? table 34 gndpecl m5 ? table 34 gndpecl m13 ? table 34 gndr p5 ? table 34 gndr p6 ? table 34 gndr p13 ? table 34 gndr r7 ? table 34 gndr r9 ? table 34 gndr r11 ? table 34 gndr r13 ? table 34 gndr u8 ? table 34 gndt p14 ? table 34 table 22 ss-smii bga23 ball list in alphan umeric order by signal name (sheet 2 of 9) signal ball type 1 reference for full description
page 91 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments gndt r1 ? table 34 gndt r3 ? table 34 gndt r5 ? table 34 gndt r15 ? table 34 gndt r17 ? table 34 gndt t17 ? table 34 gndt u2 ? table 34 gndt u4 ? table 34 gndt u6 ? table 34 gndt u10 ? table 34 gndt u12 ? table 34 gndt u14 ? table 34 gndt u16 ? table 34 gndt u17 ? table 34 led0_1_l k3 od, ts, sl, ip table 33 led0_2_l k2 od, ts, sl, ip table 33 led0_3_l j1 od, ts, sl, ip table 33 led1_1_l j4 od, ts, sl, ip table 33 led1_2_l j3 od, ts, sl, ip table 33 led1_3_l h1 od, ts, sl, ip table 33 led2_1_l h2 od, ts, sl, ip table 33 led2_2_l h3 od, ts, sl, ip table 33 led2_3_l g1 od, ts, sl, ip table 33 led3_1_l f2 od, ts, sl, ip table 33 led3_2_l g3 od, ts, sl, ip table 33 led3_3_l g4 od, ts, sl, ip table 33 led4_1_l k16 od, ts, sl, ip table 33 led4_2_l k17 od, ts, sl, ip table 33 led4_3_l j17 od, ts, sl, ip table 33 led5_1_l j15 od, ts, sl, ip table 33 led5_2_l j16 od, ts, sl, ip table 33 led5_3_l h17 od, ts, sl, ip table 33 led6_1_l h15 od, ts, sl, ip table 33 led6_2_l h16 od, ts, sl, ip table 33 led6_3_l g17 od, ts, sl, ip table 33 led7_1_l g15 od, ts, sl, ip table 33 led7_2_l f17 od, ts, sl, ip table 33 led7_3_l f16 od, ts, sl, ip table 33 mdc0 e1 i, st, id table 28 table 22 ss-smii bga23 ball list in alphan umeric order by signal name (sheet 3 of 9) signal ball type 1 reference for full description
page 92 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments mdc1 b10 i, st, id table 28 mddis l1 i, st, id table 28 mdint0_l f1 od, ts, sl, ip table 28 mdint1_l c9 od, ts, sl, ip table 28 mdio0 f3 i/o, ts, sl, ip table 28 mdio1 a10 i/o, ts, sl, ip table 28 mdix d2 i, id, st table 32 modesel0 l16 i, st, id table 32 modesel1 l17 i, st, id table 32 nc a3 ? table 35 nc a4 ? table 35 nc a5 ? table 35 nc a7 ? table 35 nc a13 ? table 35 nc a14 ? table 35 nc a16 ? table 35 nc b2 ? table 35 nc b6 ? table 35 nc b8 ? table 35 nc b14 ? table 35 nc b16 ? table 35 nc c2 ? table 35 nc c4 ? table 35 nc c6 ? table 35 nc c10 ? table 35 nc c14 ? table 35 nc c15 ? table 35 nc d4 ? table 35 nc d9 ? table 35 nc d11 ? table 35 nc d12 ? table 35 nc d16 ? table 35 nc e15 ? table 35 nc e16 ? table 35 nc f4 ? table 35 nc f15 ? table 35 nc g2 ? table 35 nc g5 ? table 35 nc g14 ? table 35 table 22 ss-smii bga23 ball list in alphan umeric order by signal name (sheet 4 of 9) signal ball type 1 reference for full description
page 93 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments nc g16 ? table 35 nc h4 ? table 35 nc h14 ? table 35 nc j2 ? table 35 nc j13 ? table 35 nc k4 ? table 35 nc k15 ? table 35 nc/linkhold a17 i, id, st table 35 table 32 no ball f6 ? ? no ball f7 ? ? no ball f8 ? ? no ball e8 ? ? no ball e10 ? ? no ball f9 ? ? no ball f10 ? ? no ball f11 ? ? no ball f12 ? ? no ball g6 ? ? no ball g7 ? ? no ball g8 ? ? no ball g9 ? ? no ball g10 ? ? no ball g11 ? ? no ball g12 ? ? no ball h5 ? ? no ball h6 ? ? no ball h7 ? ? no ball h11 ? ? no ball h12 ? ? no ball h13 ? ? no ball j6 ? ? no ball j7 ? ? no ball j11 ? no ball j12 ? ? no ball k5 ? ? no ball k6 ? ? no ball k7 ? ? no ball k11 ? ? table 22 ss-smii bga23 ball list in alphan umeric order by signal name (sheet 5 of 9) signal ball type 1 reference for full description
page 94 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments no ball k12 ? ? no ball k13 ? ? no ball l6 ? ? no ball l7 ? ? no ball l8 ? ? no ball l9 ? ? no ball l10 ? ? no ball l11 ? ? no ball l11 ? ? no ball m6 ? ? no ball m7 ? ? no ball m8 ? ? no ball m9 ? ? no ball m10 ? ? no ball m11 ? ? no ball m12 ? ? no ball n8 ? ? no ball n10 ? ? pause d5 id, i, st table 32 preasel d7 i, id, st table 32 pwrdwn l14 i, st, id table 32 refclk0 e6 i table 25 refclk1 e12 i table 25 reset_l m15 i, st, ip table 32 rxclk0 e3 o, ts, id table 27 rxclk1 b11 o, ts, id table 27 rxdata0 b1 o, ts, id table 27 rxdata1 b4 o, ts, id table 27 rxdata2 c7 o, ts, id table 27 rxdata3 b9 o, ts, id table 27 rxdata4 c12 o, ts, id table 27 rxdata5 b15 o, ts, id table 27 rxdata6 b17 o, ts, id table 27 rxdata7 f14 o, ts, id table 27 rxsync0 e4 o, ts, id table 27 rxsync1 b12 o, ts, id table 27 sd_2p5v p1 i, st, id table 29 sd0 p2 i table 29 sd1 n4 i table 29 table 22 ss-smii bga23 ball list in alphan umeric order by signal name (sheet 6 of 9) signal ball type 1 reference for full description
page 95 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments sd2 p3 i table 29 sd3 n5 i table 29 sd4 p15 i table 29 sd5 p16 i table 29 sd6 p17 i table 29 sd7 n17 i table 29 section l15 i, id, st table 32 sgnd k14 ? table 34 tck m16 i, st, id table 31 tdi n14 i, st, ip table 31 tdo n15 o, ts table 31 tms n16 i, st, ip table 31 tpfin0 t1 ao/ai table 30 tpfin1 t4 ao/ai table 30 tpfin2 t5 ao/ai table 30 tpfin3 r8 ao/ai table 30 tpfin4 u9 ao/ai table 30 tpfin5 t12 ao/ai table 30 tpfin6 t13 ao/ai table 30 tpfin7 t16 ao/ai table 30 tpfip0 r2 ao/ai table 30 tpfip1 u3 ao/ai table 30 tpfip2 r6 ao/ai table 30 tpfip3 t8 ao/ai table 30 tpfip4 t9 ao/ai table 30 tpfip5 u13 ao/ai table 30 tpfip6 r12 ao/ai table 30 tpfip7 r16 ao/ai table 30 tpfon0 u1 ao/ai table 30 tpfon1 r4 ao/ai table 30 tpfon2 u5 ao/ai table 30 tpfon3 t7 ao/ai table 30 tpfon4 r10 ao/ai table 30 tpfon5 u11 ao/ai table 30 tpfon6 u15 ao/ai table 30 tpfon7 t15 ao/ai table 30 tpfop0 t2 ao/ai table 30 tpfop1 t3 ao/ai table 30 tpfop2 t6 ao/ai table 30 table 22 ss-smii bga23 ball list in alphan umeric order by signal name (sheet 7 of 9) signal ball type 1 reference for full description
page 96 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments tpfop3 u7 ao/ai table 30 tpfop4 t10 ao/ai table 30 tpfop5 t11 ao/ai table 30 tpfop6 t14 ao/ai table 30 tpfop7 r14 ao/ai table 30 trst_l m17 i, ip, st table 31 txclk0 c8 i, id table 27 txclk1 d17 i, id table 27 txdata0 e2 i, id table 25 txdata1 c3 i, id table 25 txdata2 b5 i, id table 25 txdata3 d8 i, id table 25 txdata4 a11 i, id table 25 txdata5 b13 i, id table 25 txdata6 d13 i, id table 25 txdata7 e14 i, id table 25 txslew_0 n3 i, st, id table 32 txslew_1 m4 i, st, id table 32 txsync0 a6 i, id table 27 txsync1 c16 i, id table 27 vccd f5 ? table 34 vccd g13 ? table 34 vccd j5 ? table 34 vccd j14 ? table 34 vccio a2 ? table 34 vccio a8 ? table 34 vccio c1 ? table 34 vccio c11 ? table 34 vccio d14 ? table 34 vccpecl l5 ? table 34 vccpecl l13 ? table 34 vccr n13 ? table 34 vccr p4 ? table 34 vccr p7 ? table 34 vccr p8 ? table 34 vccr p9 ? table 34 vccr p10 ? table 34 vccr p11 ? table 34 vccr p12 ? table 34 table 22 ss-smii bga23 ball list in alphan umeric order by signal name (sheet 8 of 9) signal ball type 1 reference for full description
page 97 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments vcct n6 ? table 34 vcct n7 ? table 34 vcct n9 ? table 34 vcct n11 ? table 34 vcct n12 ? table 34 table 22 ss-smii bga23 ball list in alphan umeric order by signal name (sheet 9 of 9) signal ball type 1 reference for full description table 23 ss-smii bga23 ball list in alphan umeric order by ball location (sheet 1 of 8) ball signal type 1 reference for full description a1 gndd ? table 34 a2 vccio ? table 34 a3 nc ? table 35 a4 nc ? table 35 a5 nc ? table 35 a6 txsync0 i, id table 27 a7 nc ? table 35 a8 vccio ? table 34 a9 gndd ? table 34 a10 mdio1 i/o, ts, sl, ip table 28 a11 txdata4 i, id table 25 a12 fifosel0 i, id, st table 32 a13 nc ? table 35 a14 nc ? table 35 a15 fifosel1 i, id, st table 32 a16 nc ? table 35 a17 nc/linkhold i, id, st table 35 table 32 b1 rxdata0 o, ts, id table 27 b2 nc ? table 35 b3 gndd ? table 34 b4 rxdata1 o, ts, id table 27 b5 txdata2 i, id table 25 b6 nc ? table 35 b7 gndd ? table 34 b8 nc ? table 35 b9 rxdata3 o, ts, id table 27 b10 mdc1 i, st, id table 28 b11 rxclk1 o, ts, id table 27 b12 rxsync1 o, ts, id table 27 b13 txdata5 i, id table 25
page 98 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments b14 nc ? table 35 b15 rxdata5 o, ts, id table 27 b16 nc ? table 35 b17 rxdata6 o, ts, id table 27 c1 vccio ? table 34 c2 nc ? table 35 c3 txdata1 i, id table 25 c4 nc ? table 35 c5 gndd ? table 34 c6 nc ? table 35 c7 rxdata2 o, ts, id table 27 c8 txclk0 i, id table 27 c9 mdint1_l od, ts, sl, ip table 28 c10 nc ? table 35 c11 vccio ? table 34 c12 rxdata4 o, ts, id table 27 c13 gndd ? table 34 c14 nc ? table 35 c15 nc ? table 35 c16 txsync1 i, id table 27 c17 gndd ? table 34 d1 gndd ? table 34 d2 mdix i, id, st table 32 d3 gndd ? table 34 d4 nc ? table 35 d5 pause id, i, st table 32 d6 gndd ? table 34 d7 preasel i, id, st table 32 d8 txdata3 i, id table 25 d9 nc ? table 35 d10 gndd ? table 34 d11 nc ? table 35 d12 nc ? table 35 d13 txdata6 i, id table 25 d14 vccio ? table 34 d15 gndd ? table 34 d16 nc ? table 35 d17 txclk1 i, id table 27 e1 mdc0 i, st, id table 28 table 23 ss-smii bga23 ball list in alphan umeric order by ball location (sheet 2 of 8) ball signal type 1 reference for full description
page 99 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments e2 txdata0 i, id table 25 e3 rxclk0 o, ts, id table 27 e4 rxsync0 o, ts, id table 27 e5 gndd ? table 34 e6 refclk0 i table 25 e7 gndd ? table 34 e8 no ball ? ? e9 gndd ? table 34 e10 no ball ? ? e11 gndd ? table 34 e12 refclk1 i table 25 e13 gndd ? table 34 e14 txdata7 i, id table 25 e15 nc ? table 35 e16 nc ? table 35 e17 gndd ? table 34 f1 mdint0_l od, ts, sl, ip table 28 f2 led3_1_l od, ts, sl, ip table 33 f3 mdio0 i/o, ts, sl, ip table 28 f4 nc ? table 35 f5 vccd ? table 34 f6 no ball ? ? f7 no ball ? ? f8 no ball ? ? f9 no ball ? ? f10 no ball ? ? f11 no ball ? ? f12 no ball ? ? f13 gndd ? table 34 f14 rxdata7 o, ts, id table 27 f15 nc ? table 35 f16 led7_3_l od, ts, sl, ip table 33 f17 led7_2_l od, ts, sl, ip table 33 g1 led2_3_l od, ts, sl, ip table 33 g2 nc ? table 35 g3 led3_2_l od, ts, sl, ip table 33 g4 led3_3_l od, ts, sl, ip table 33 g5 nc ? table 35 g6 no ball ? ? table 23 ss-smii bga23 ball list in alphan umeric order by ball location (sheet 3 of 8) ball signal type 1 reference for full description
page 100 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments g7 no ball ? ? g8 no ball ? ? g9 no ball ? ? g10 no ball ? ? g11 no ball ? ? g12 no ball ? ? g13 vccd ? table 34 g14 nc ? table 35 g15 led7_1_l od, ts, sl, ip table 33 g16 nc ? table 35 g17 led6_3_l od, ts, sl, ip table 33 h1 led1_3_l od, ts, sl, ip table 33 h2 led2_1_l od, ts, sl, ip table 33 h3 led2_2_l od, ts, sl, ip table 33 h4 nc ? table 35 h5 no ball ? ? h6 no ball ? ? h7 no ball ? ? h8 gndd ? table 34 h9 gndd ? table 34 h10 gndd ? table 34 h11 no ball ? ? h12 no ball ? ? h13 no ball ? ? h14 nc ? table 35 h15 led6_1_l od, ts, sl, ip table 33 h16 led6_2_l od, ts, sl, ip table 33 h17 led5_3_l od, ts, sl, ip table 33 j1 led0_3_l od, ts, sl, ip table 33 j2 nc ? table 35 j3 led1_2_l od, ts, sl, ip table 33 j4 led1_1_l od, ts, sl, ip table 33 j5 vccd ? table 34 j6 no ball ? ? j7 no ball ? ? j8 gndd ? table 34 j9 gndd ? table 34 j10 gndd ? table 34 j11 no ball ? table 23 ss-smii bga23 ball list in alphan umeric order by ball location (sheet 4 of 8) ball signal type 1 reference for full description
page 101 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments j12 no ball ? ? j13 nc ? table 35 j14 vccd ? table 34 j15 led5_1_l od, ts, sl, ip table 33 j16 led5_2_l od, ts, sl, ip table 33 j17 led4_3_l od, ts, sl, ip table 33 k1 amdix_en i, st, ip table 32 k2 led0_2_l od, ts, sl, ip table 33 k3 led0_1_l od, ts, sl, ip table 33 k4 nc ? table 35 k5 no ball ? ? k6 no ball ? ? k7 no ball ? ? k8 gndd ? table 34 k9 gndd ? table 34 k10 gndd ? table 34 k11 no ball ? ? k12 no ball ? ? k13 no ball ? ? k14 sgnd ? table 34 k15 nc ? table 35 k16 led4_1_l od, ts, sl, ip table 33 k17 led4_2_l od, ts, sl, ip table 33 l1 mddis i, st, id table 28 l2 cfg_3 i, st, id table 32 l3 cfg_2 i, st, id table 32 l4 add_4 i, st, id table 32 l5 vccpecl ? table 34 l6 no ball ? ? l7 no ball ? ? l8 no ball ? ? l9 no ball ? ? l10 no ball ? ? l11 no ball ? ? l11 no ball ? ? l13 vccpecl ? table 34 l14 pwrdwn i, st, id table 32 l15 section i, id, st table 32 l16 modesel0 i, st, id table 32 table 23 ss-smii bga23 ball list in alphan umeric order by ball location (sheet 5 of 8) ball signal type 1 reference for full description
page 102 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments l17 modesel1 i, st, id table 32 m1 cfg_1 i, st, id table 32 m2 add_3 i, st, id table 32 m3 add_2 i, st, id table 32 m4 txslew_1 i, st, id table 32 m5 gndpecl ? table 34 m6 no ball ? ? m7 no ball ? ? m8 no ball ? ? m9 no ball ? ? m10 no ball ? ? m11 no ball ? ? m12 no ball ? ? m13 gndpecl ? table 34 m14 g_fx/tp_l i, id, st table 32 m15 reset_l i, ip, st table 32 m16 tck i, st, id table 31 m17 trst_l i, ip, st table 31 n1 add_1 i, id, st table 32 n2 add_0 i, id, st table 32 n3 txslew_0 i, id, st table 32 n4 sd1 i table 29 n5 sd3 i table 29 n6 vcct ? table 34 n7 vcct ? table 34 n8 no ball ? ? n9 vcct ? table 34 n10 no ball ? ? n11 vcct ? table 34 n12 vcct ? table 34 n13 vccr ? table 34 n14 tdi i, st, ip table 31 n15 tdo o, ts table 31 n16 tms i, st, ip table 31 n17 sd7 i table 29 p1 sd_2p5v i, st, id table 29 p2 sd0 i table 29 p3 sd2 i table 29 p4 vccr ? table 34 table 23 ss-smii bga23 ball list in alphan umeric order by ball location (sheet 6 of 8) ball signal type 1 reference for full description
page 103 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.3 bga23 ball assignments p5 gndr ? table 34 p6 gndr ? table 34 p7 vccr ? table 34 p8 vccr ? table 34 p9 vccr ? table 34 p10 vccr ? table 34 p11 vccr ? table 34 p12 vccr ? table 34 p13 gndr ? table 34 p14 gndt ? table 34 p15 sd4 i table 29 p16 sd5 i table 29 p17 sd6 i table 29 r1 gndt ? table 34 r2 tpfip0 ao/ai table 30 r3 gndt ? table 34 r4 tpfon1 ao/ai table 30 r5 gndt ? table 34 r6 tpfip2 ao/ai table 30 r7 gndr ? table 34 r8 tpfin3 ao/ai table 30 r9 gndr ? table 34 r10 tpfon4 ao/ai table 30 r11 gndr ? table 34 r12 tpfip6 ao/ai table 30 r13 gndr ? table 34 r14 tpfop7 ao/ai table 30 r15 gndt ? table 34 r16 tpfip7 ao/ai table 30 r17 gndt ? table 34 t1 tpfin0 ao/ai table 30 t2 tpfop0 ao/ai table 30 t3 tpfop1 ao/ai table 30 t4 tpfin1 ao/ai table 30 t5 tpfin2 ao/ai table 30 t6 tpfop2 ao/ai table 30 t7 tpfon3 ao/ai table 30 t8 tpfip3 ao/ai table 30 t9 tpfip4 ao/ai table 30 table 23 ss-smii bga23 ball list in alphan umeric order by ball location (sheet 7 of 8) ball signal type 1 reference for full description
page 104 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions 3.4 bga23 signal descriptions 3.4.1 signal name conventions signal names may contain either a port desi gnation or a serial designation, or a combination of the two designations. signal naming conventions are as follows: ? port number only. individual signals that apply to a particular port are designated by the signal mnemonic, immediately followed by the port designation. for example, transmit enable signals would be ident ified as txen0, txen1, and txen2. ? serial number only. a set of signals which are not tied to any specific port are designated by the signal mnemonic, followed by an underscore and a serial designation. for example, a set of thre e global configuration signals would be identified as cfg_1, cfg_2, and cfg_3. ? port and serial number. in cases where each port is assigned a set of multiple signals, each signal is designated in th e following order: signal mnemonic, port designation, an underscore, and the serial designation. for example, a set of three port t10 tpfop4 ao/ai table 30 t11 tpfop5 ao/ai table 30 t12 tpfin5 ao/ai table 30 t13 tpfin6 ao/ai table 30 t14 tpfop6 ao/ai table 30 t15 tpfon7 ao/ai table 30 t16 tpfin7 ao/ai table 30 t17 gndt ? table 34 u1 tpfon0 ao/ai table 30 u2 gndt ? table 34 u3 tpfip1 ao/ai table 30 u4 gndt ? table 34 u5 tpfon2 ao/ai table 30 u6 gndt ? table 34 u7 tpfop3 ao/ai table 30 u8 gndr ? table 34 u9 tpfin4 ao/ai table 30 u10 gndt ? table 34 u11 tpfon5 ao/ai table 30 u12 gndt ? table 34 u13 tpfip5 ao/ai table 30 u14 gndt ? table 34 u15 tpfon6 ao/ai table 30 u16 gndt ? table 34 u17 gndt ? table 34 table 23 ss-smii bga23 ball list in alphan umeric order by ball location (sheet 8 of 8) ball signal type 1 reference for full description
page 105 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions configuration signals would be identified as rxdata0_0 and rxdata0_1, rxdata1_0 and rxdata1_1, and rxdata2_0 and rxdata2_1. 3.4.2 signal descriptions ? rmii, smii, and ss-smii configurations table 24 rmii signal descriptions ? bga23 (sheet 1 of 3) ball/pin designation symbol type 1 signal description 2,3 bga23 pqfp e6, e12 44 6 refclk0 refclk1 i reference clock. 50 mhz rmii reference clock is always required. rmii inputs are sampled on the rising edge of refclk, rmii outputs are sourced on the falling edge. e2, f4 61 62 txdata0_0 txdata0_1 i, id transmit data - port 0. inputs containing 2-bit parall el di-bits to be transmitted from port 0 are clocked in synchronously to refclk. c3, d4 52 53 txdata1_0 txdata1_1 i, id transmit data - port 1. inputs containing 2-bit parall el di-bits to be transmitted from port 1 are clocked in synchronously to refclk b5 a4 42 43 txdata2_0 txdata2_1 i, id transmit data - port 2. inputs containing 2-bit parall el di-bits to be transmitted from port 2 are clocked in synchronously to refclk. d8, a6 34 35 txdata3_0 txdata3_1 i, id transmit data - port 3. inputs containing 2-bit parall el di-bits to be transmitted from port 3 are clocked in synchronously to refclk. a11, c10 22 23 txdata4_0 txdata4_1 i, id transmit data - port 4. inputs containing 2-bit parall el di-bits to be transmitted from port 4 are clocked in synchronously to refclk. b13, d11 13 14 txdata5_0 txdata5_1 i, id transmit data - port 5. inputs containing 2-bit parall el di-bits to be transmitted from port 5 are clocked in synchronously to refclk. d13, a16 4 5 txdata6_0 txdata6_1 i, id transmit data - port 6. inputs containing 2-bit parall el di-bits to be transmitted from port 6 are clocked in synchronously to refclk. e14, c16 203 204 txdata7_0 txdata7_1 i, id transmit data - port 7. inputs containing 2-bit parall el di-bits to be transmitted from port 7 are clocked in synchronously to refclk. e3, b2, c6, a7, b11, a14, c14, d16 60 51 41 33 21 12 3 202 txen0 txen1 txen2 txen3 txen4 txen5 txen6 txen7 i, id transmit enable - ports 0-7. active high input enables re spective port transmitter. this signal must be sync hronous to the refclk. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. rxdata[0:7]_0, rxdata[0:7]_1, crs_dv[0:7] and rxer[0:7] outputs are three-stated in isolation and h/w power-down modes and during h/w reset.
page 106 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions c2, b1 55 54 rxdata0_0 rxdata0_1 o, ts o, ts, id receive data - port 0. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. a3, b4 46 45 rxdata1_0 rxdata1_1 o, ts o, ts, id receive data - port 1. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. b6, c7 37 36 rxdata2_0 rxdata2_1 o, ts o, ts, id receive data - port 2. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. d9, b9 28 27 rxdata3_0 rxdata3_1 o, ts o, ts, id receive data - port 3. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. a13, c12 16 15 rxdata4_0 rxdata4_1 o, ts o, ts, id receive data - port 4. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. b14, b15 8 7 rxdata5_0 rxdata5_1 o, ts o, ts, id receive data - port 5. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. c15, b17 206 205 rxdata6_0 rxdata6_1 o, ts o, ts, id receive data - port 6. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. table 24 rmii signal descriptions ? bga23 (sheet 2 of 3) ball/pin designation symbol type 1 signal description 2,3 bga23 pqfp 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. rxdata[0:7]_0, rxdata[0:7]_1, crs_dv[0:7] and rxer[0:7] outputs are three-stated in isolation and h/w power-down modes and during h/w reset.
page 107 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions e16, f14 198 197 rxdata7_0 rxdata7_1 o, ts o, ts, id receive data - port 7. receive data signals (2-bit pa rallel di-bits) are driven synchronously to refclk. e4, c4, a5, b8, b12, d12, b16, e15 58 49 39 31 17 10 1 200 crs_dv0 crs_dv1 crs_dv2 crs_dv3 crs_dv4 crs_dv5 crs_dv6 crs_dv7 o, ts, sl, id carrier sense/receive data valid - ports 0-7. on detection of valid carrier, these signals are asserted asynchronously with respec t to refclk. crs_dvn is de-asserted on loss of carrier, synchronous to refclk. d2, d5, d7, c8, a12, a15, a17, d17 59 50 40 32 20 11 2 201 rxer0 rxer1 rxer2 rxer3 rxer4 rxer5 rxer6 rxer7 o, ts, sl, id, i, st receive error - ports 0-7. these signals are synchr onous to the respective refclk. active high indicates that received code group is invalid, or that pll is not locked. the rxer signals have the following additional function pins: rxer0 (mdix) rxer1 (pause) rxer2 (preasel) rxer4 (fifosel0) rxer5 (fifosel1) rxer6 {linkhold) table 24 rmii signal descriptions ? bga23 (sheet 3 of 3) ball/pin designation symbol type 1 signal description 2,3 bga23 pqfp 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. rxdata[0:7]_0, rxdata[0:7]_1, crs_dv[0:7] and rxer[0:7] outputs are three-stated in isolation and h/w power-down modes and during h/w reset.
page 108 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions table 25 smii/ss-smii common signal descriptions ? bga23 ball/pin designation symbol type 1 signal description 2 bga23 pqfp e2, c3, b5, d8, a11, b13, d13, e14 61 52 42 34 22 13 4 203 txdata0 txdata1 txdata2 txdata3 txdata4 txdata5 txdata6 txdata7 i, id transmit data - ports 0-7. these serial input streams provide data to be transmitted to the network. the lxt9785/lxt9785e clocks the data in synchronously to refclk. e6, e12 44 6 refclk0 refclk1 i reference clock. the lxt9785/lxt9785e always requires a 125 mhz reference clock input. refer to functional description for detailed clock requirements. refclk0 and refclk1 are always connected regardless of sectionalization mode. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. table 26 smii specific signal descriptions ? bga23 pin/ball designation symbol type 1 signal description 2,3 bga23 pqfp a6, c16 35 204 sync0 sync1 i, id smii synchronization. the mac must generate a sync pulse every 10 refclk cycles to synchronize the smii. sync0 is used when 1x8 port sectionalization is selected. sync0 and sync1 are to be used when 2x4 port se ctionalizati on is chosen. c2, a3, b6, d9, a13, b14, c15, e16 55 46 37 28 16 8 206 198 rxdata0 rxdata1 rxdata2 rxdata3 rxdata4 rxdata5 rxdata6 rxdata7 o, ts receive data - ports 0-7 . these serial output streams provide data received from the network. the lxt9785/lxt9785e drives the data out synchronously to rxclk. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. 3. rxdata[0:7] outputs are three-stated in isolation and hardware power-down modes and during hardware reset.
page 109 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions table 27 ss-smii specific signal descriptions ? bga23 ball/pin designation symbol type 1 signal description 2,3 bga23 pqfp a6, c16 35 204 txsync0 txsync1 i, id ss-smii transmit synchronization. the mac must generate a txsync pulse every 10 txclk cycles to mark the start of txdata segments. txsync0 is used when 1x8 port secti onalization is selected. e4, b12 58 17 rxsync0 rxsync1 o, ts, id ss-smii receive synchronization. the lxt9785/lxt9785e generates these pulses every 10 rxclk cycles to mark the start of rxdata segments for the mac. rxsync1 is used when 1x8 port sectionalization is selected. rxsync0 may not be used. these outputs are only enabled when ss-smii mode is enabled. c8, d17 32 201 txclk0 txclk1 i, id ss-smii transmit clock. the mac sources this 125 mhz clock as the timing reference for txdata and txsync. only txclk0 is used when 1x8 port sectional ization is selected. e3, b11 60 21 rxclk0 rxclk1 o, ts, id ss-smii receive clock. the lxt9785/lxt9785e generates these clocks, based on refclk, to provide a timing reference for rxdata and rxsync to the mac. rxclk1 is used when 1x8 port sectionalization is selected. rxclk0 may not be used. b1, b4, c7, b9, c12, b15, b17, f14 54 45 36 27 15 7 205 197 rxdata0 rxdata1 rxdata2 rxdata3 rxdata4 rxdata5 rxdata6 rxdata7 o, ts, id receive data - ports 0-7. these serial output streams provide data received from the network. the lxt9785/lxt9785e drives the data out synchronously to refclk. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. rxdata[0:7], rxsync[0:1], and rxclk[0:1] outputs are three-stated in isolation and h/w power-down modes and during h/w reset.
page 110 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions table 28 mdio control interface signals ? bga23 ball/pin designation symbol type 1 signal description 2,3, 4 bga23 pqfp f3, a10 64 25 mdio0 mdio1 i/o, ts, sl, ip management data input/output. bidirectional serial dat a channel for communication between the phy and mac or switch asic. only mdio0 is used when 1x8 port sectionalization is selected. in 2x4 port sectionalization mode, mdio0 accesses ports 0-3 and mdio1 accesses ports 4-7. refer to figure 21, typical ss-smii quad sectionalization , on page 161 . f1, c9 67 26 mdint0_l mdint1_l od, ts, sl, ip management data interrupt. when register bit 18.1 = 1, an active low output on this pin indicates status change. only mdint0_l is used when 1x8 port sectionalization is selected. in 2x4 port sectionalization mode, mdin t0_l is associated with ports 0-3 and mdint1_l is associated with ports 4-7. refer to figure 21, typical ss-smii quad sectionalization , on page 161 . e1, b10 63 24 mdc0 mdc1 i, st, id management data clock. clock for the mdio serial data channel. maximum frequency is 20 mhz. only mdc0 is used when 1x8 port sectionalization is selected. in 2x4 port sectionalization mode, mdc0 clocks ports 0-3 register accesses and mdc1 clocks ports 4-7 regi ster accesses. refer to figure 21, typical ss-smii quad sectionalization , on page 161 . l1 84 mddis i, st, id management disable. when mddis is tied high, the mdio port is completely disabled and the hardware control interface pins set their respective bits at power up and reset. when mddis is pulled low at power up or reset, via the internal pull-down resistor or by tying it to ground, the hardware control interface pins control only the initial or ?default? values of their respective register bits. after the power-up/reset cycle is complete, bit control reverts to the mdio serial channel. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. mdio[0:1] and mdint[0:1]_l outputs are three-stated in h/w power-down mode and during h/w reset. 4. supports the 802.3 mdio register set. specific bits in the registers are referenced using an ?x.y? notation, where x is the register number (0-32) and y is the bit number (0-15).
page 111 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions table 29 signal detect ? bga23 ball/pin designation symbol type 1 signal description2,3 bga23 pqfp p1 95 sd_2p5v i, st, id signal detect 2.5 volt interface. sd input threshold voltage select. tie to vccpecl = select 2.5 v lvpecl input levels float or tie to gndpecl = select 3.3 v lvpecl input levels p2, n4, p3, n5, p15, p16, p17, n17 96 97 100 101 161 162 165 166 sd0 sd1 sd2 sd3 sd4 sd5 sd6 sd7 i signal detect - ports 0-7. signal detect input from the fiber transceiver (these inputs are only active for ports operating in fiber mode). logic high = normal operation (the process of searching for receive idles for the purpose of bringing link up is initiated) logic low = link is declared lost 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. 3. tie sd[0:7] inputs to gndpecl if unused. table 30 network interface signal descriptions ? bga23 ball/pin designation symbol type 1 signal description bga23 pqfp t2, u1, t3, r4, t6, u5, u7, t7, t10, r10, t11, u11, t14,u15, r14, t15 107, 108 111, 110 121, 122 125, 124 136, 137 140, 139 150, 151 154, 153 tpfop0, tpfon0 tpfop1, tpfon1 tpfop2, tpfon2 tpfop3, tpfon3 tpfop4, tpfon4 tpfop5, tpfon5 tpfop6, tpfon6 tpfop7, tpfon7 ao/ai twisted-pair/fiber outputs 2 , positive & negative, ports 0-7. during 100base-tx or 10base-t operation, tpfo pins drive 802.3 compliant pulses onto the line. during 100base-fx operation, tpfo pins produce differential lvpecl outputs for fiber transceivers. r2, t1, u3, t4, r6, t5, t8, r8, t9, u9, u13, t12, r12, t13, r16, t16 104, 105 115, 114 118, 119 129, 128 132, 133 143, 142 146, 147 157, 156 tpfip0, tpfin0 tpfip1, tpfin1 tpfip2, tpfin2 tpfip3, tpfin3 tpfip4, tpfin4 tpfip5, tpfin5 tpfip6, tpfin6 tpfip7, tpfin7 ai/ao twisted-pair/fiber inputs 3 , positive & negative, ports 0-7. during 100base-tx or 10base-t operation, tpfi pins receive differential 100base-tx or 10base-t signals from the line. during 100base-fx operation, tpfi pins receive differential lvpecl inputs from fiber transceivers. 1. type column coding: ai = analog input, ao = analog output. 2. switched to inputs (see tpfip/n description) when not in fiber mode and mdix is not active [that is, twisted-pair, non-crossover mdi mode]. 3. switched to outputs (see tpfop/n description) when not in fiber mode and mdix is not active [that is, twisted-pair, non-crossover mdi mode].
page 112 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions table 31 jtag test signal descriptions ? bga23 ball/pin designation symbol type 1 signal description 2,3 bga23 pqfp n14 167 tdi i, st, ip test data input. test data sampled with respect to the rising edge of tck. n15 168 tdo o, ts test data output. test data driven with respect to the falling edge of tck. n16 169 tms i, st, ip test mode select. m16 170 tck i, st, id test clock. clock input for jtag test. m17 171 trst_l i, st, ip test reset. reset input for jtag test. 1. type column coding: i = input, o = output, od = open drain, ts = three-state-able output, smt = schmitt triggered input, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. tdo output is three-stated in h/w power-down mode and during h/w reset. table 32 miscellaneous signal de scriptions ? bga23 (sheet 1 of 4) ball/pin designation symbol type 1 signal description 2 bga23 pqfp n3, m4 94 93 txslew_0 txslew_1 i, st, id tx output slew controls 0 and 1 defaults. these pins are read at startup or reset. their value at that time is used to set the default state of register bits 27.11:10 for all ports. these register bits can be read and overwritten after startup / reset. these pins select the tx output slew rate for all ports (rise and fall time) as follows: txslew_1 txslew_0 slew rate (rise and fall time) 0 0 3.3 ns 0 1 3.6 ns 1 0 3.9 ns 1 1 4.2 ns 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during hardware power-down mode. 3. the linkhold ability is avail able only for stepping 4 (revision d0).
page 113 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions d5 50 pause id, i, st pause default. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 4.10 for all ports. this register bit can be read and overwritten after startup / reset. when high, the lxt9785/lxt9785e advertises pause capabilities on all ports during auto-negotiation. this pin is shared with rmii- rxer1. an external pull-up resistor (see applications sect ion for value) can be used to set pause active while rx er1 is three-stated during h/w reset. if no pull-up is used, the default pause state is set inactive via the in ternal pull-down resistor. l14 174 pwrdwn i, st, id power-down. when high, forces the lxt9785/lxt9785e into global power-down mode. pin is not on jtag chain. m15 175 reset_l i, st, ip reset. this active low input is ored with the control register reset register bit 0.15. when held low, all outputs are forced to inactive state. pin is not on jtag chain. l4, m2, m3, n1, n2 88 89 90 91 92 add_4 add_3 add_2 add_1 add_0 i, st, id address <4:0>. sets base address. each port adds its port number (starting with 0) to this address to determine its phy address. port 0 address = base port 1 address = base + 1 port 2 address = base + 2 port 3 address = base + 3 port 4 address = base + 4 port 5 address = base + 5 port 6 address = base + 6 port 7 address = base + 7 l17, l16 178 177 modesel_1 modesel_0 i, st, id mode select[1:0]. 00 = rmii 01 = smii 10 = ss-smii 11 = reserved all ports are configured the same. interfaces cannot be mixed and must be all rmii, smii, or ss-smii. l15 176 section i, st, id sectionalization select. this pin selects sectionaliz ation into separate ports. 0 = 1x8 ports, 1 = 2x4 ports table 32 miscellaneous signal de scriptions ? bga23 (sheet 2 of 4) ball/pin designation symbol type 1 signal description 2 bga23 pqfp 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during hardware power-down mode. 3. the linkhold ability is avail able only for stepping 4 (revision d0).
page 114 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions k1 83 amdix_en i, st, ip auto mdi/mdix enable default. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 27.9 for all ports. these register bits can be read and overwritten after startup / reset. refer to table 40, mdix selection , on page 142 . when active (high), automatic mdi crossover (mdix) (regardless of segmentation) is selected for all ports. when inactive (low) mdix is selected according to the mdix pin. d2 59 mdix i, id, st mdix select default. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 27.8 for all ports. these register bits can be read and overwritten after startup / reset. refer to table 40, mdix selection , on page 142 . when amdix_en is active this pin is ignored. when amdix_en is inactive, all ports are forced to the mdi or the mdix function regardless of segmentation. if this pin is active (high) , mdi crossover (mdix) is selected. if this pin is inactive, non-crossover mdi mode is set. this pin is shared with rmii- rxer0. an external pull-up resistor (see applications sect ion for value) can be used to set mdix active while rxer0 is three-stated during h/w reset. if no pull-up is used, the default mdix state is set inactive via the inter nal pull-down resistor. do not tie this pin directly to vccio (vs. using a pull-up) in non-rmii modes. l2, l3, m1 85 86 87 cfg_3 cfg_2 cfg_1 i, st, id global port configuration defaults 1-3. these pins are read at startup or reset. their value at that time is used to set the default state of register bits shown in table 42, global hardware configuration settings , on page 152 for all ports. these register bits can be read and overwritten after startup / reset. when operating in hardware control mode, these pins provide configuration control options for all the ports (refer to table 42, global hardware configuration settings , on page 152 for details). m14 173 g_fx/tp_l i, st, id global fx/tp_l enable default. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 16.0 for all ports. these register bits can be read and overwritten after startup / reset. refer to table 93, port configuration register (address 16, hex 10) , on page 222 . this input selects whether all the ports are defaulted to tp vs. fx mode. table 32 miscellaneous signal de scriptions ? bga23 (sheet 3 of 4) ball/pin designation symbol type 1 signal description 2 bga23 pqfp 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during hardware power-down mode. 3. the linkhold ability is avail able only for stepping 4 (revision d0).
page 115 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions a15 a12 11 20 fifosel1 fifosel0 i, id, st fifo select <1:0>. these pins are read at startup or reset. their value at that time is used to set the default state of register bits 18.15:14 for all ports. these register bits can be read and overwritten after startup/reset. these pins are shared with rmii-rxer<5:4>. an external pull-up resistor (see applications section for value) can be used to set fifo select<1:0> to active while rxer<5:4> are three-stated during hardware reset. if no pull-up is used, the default fifo select state is set via the internal pull-down resistors. see table 36, receive fifo depth configurations , on page 119 . d7 40 preasel i, id, st preamble select. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 16.5 for all ports. this register bit can be read and overwritten after startup/reset. this pin is shared with rmii- rxer2. an external pull-up resistor (see applications sect ion for value) can be used to set preamble select to active while rxer2 is three-stated during hardware reset. if no pull-up is used, the default preamble select state is set via the internal pull-down resistors. note: preamble select has no effect in 100 mbps operation. a17 2 linkhold 3 i, id, st linkhold defaul t. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 0.11 for all ports. this register bit can be read and overwritten after startup / reset. when high, the lxt9785/lxt9785e powers down all ports. this pin is shared with rmii- rxer6. an external pull-up resistor (see applications sect ion for value) can be used to set linkhold active while rxer6 is tri-stated during h/w reset. if no pull-up is used, the default linkhold state is set inactive via t he internal pull-down resistor. table 32 miscellaneous signal de scriptions ? bga23 (sheet 4 of 4) ball/pin designation symbol type 1 signal description 2 bga23 pqfp 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during hardware power-down mode. 3. the linkhold ability is avail able only for stepping 4 (revision d0).
page 116 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions table 33 led signal descriptions ? bga23 (sheet 1 of 2) ball/pin designation symbol type 1 signal description 2,3 bga23 pqfp k3, k2, j1 82 81 80 led0_1_l led0_2_l led0_3_l od, ts, sl, ip port 0 led drivers 1-3. these pins drive led indicators for port 0. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). j4, j3, h1 77 76 75 led1_1_l led1_2_l led1_3_l od, ts, sl, ip port 1 led drivers 1-3. these pins drive led indicators for port 1. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). h2, h3, g1 73 72 71 led2_1_l led2_2_l led2_3_l od, ts, sl, ip port 2 led drivers 1-3. these pins drive led indicators for port 2. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). f2, g3, g4 70 69 68 led3_1_l led3_2_l led3_3_l od, ts, sl, ip port 3 led drivers 1-3. these pins drive led indicators for port 3. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). k16, k17, j17 180 181 182 led4_1_l led4_2_l led4_3_l od, ts, sl, ip port 4 led drivers 1-3. these pins drive led indicators for port 4. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. the led outputs are three-stated in h/w power-down mode and during h/w reset.
page 117 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions j15, j16, h17 185 186 187 led5_1_l led5_2_l led5_3_l od, ts, sl, ip port 5 led drivers 1-3. these pins drive led indicators for port 5. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). h15, h16, g17 189 190 191 led6_1_l led6_2_l led6_3_l od, ts, sl, ip port 6 led drivers 1-3. these pins drive led indicators for port 6. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). g15, f17, f16 192 193 194 led7_1_l led7_2_l led7_3_l od, ts, sl, ip port 7 led drivers 1-3. these pins drive led indicators for port 7. each led can display one of several av ailable status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). table 34 power supply signal descriptions ? bga23 (sheet 1 of 2) ball/pin designation symbol type signal description bga23 pqfp f5, g13, j14, j5 65, 78, 184, 196 vccd ? digital power supply - core. +2.5 v supply for core digital circuits. a2, a8, c1, c11, d14 18, 29, 47, 56, 208 vccio ? digital power supply - i/o ring. +2.5/3.3 v supply for digital i/o circuits. the digital input circuits running off of this rail, having a ttl-level threshold and over-voltage protection, may be interfaced with 3.3/5.0 v, when the io supply is 3.3 v, and 2.5/3.3/5.0 v when 2.5 v. l5, l13 98, 164 vccpecl ? digital power supply - pecl signal detect inputs. +2.5/3.3 v supply for pecl signal detect input circuits. if fiber mode is not used (t hat is, g_fx/tp_l is pulled low), the vccpecl pins may be tied to gndpecl to save power. n13, p4, p7, p8, p9, p10, p11, p12 103, 116, 117, 130, 131, 144, 145, 158 vccr ? analog power supply - receive. +2.5 v supply for all analog receive circuits. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. table 33 led signal descriptions ? bga23 (sheet 2 of 2) ball/pin designation symbol type 1 signal description 2,3 bga23 pqfp 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. the ip/id resistors are disabled during h/w power-down mode. if a pin is an output or an i/o, the ip/id resistors are also disabl ed when the output is enabled. 3. the led outputs are three-stated in h/w power-down mode and during h/w reset.
page 118 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions n6, n7, n9, n11, n12 109, 123, 138, 152 vcct ? analog power supply - transmit. +2.5 v supply for all analog transmit circuits. a1, a9, b3, b7, c5, c13, c17, d1, d3, d6, d10, d15, e5, e7, e9, e11, e13, e17, f13, h8, h9, h10, j8, j9, j10, k8, k9, k10 66, 79, 183, 195 gndd ? digital ground. ground return for core digital supplies (vccd). all ground pins can be tied together using a single ground plane. ? 9, 19, 30, 38, 48, 57, 74, 188, 199, 207 gndio ? digital gnd - i/o ring. ground return for digital i/o circuits (vccio). m5, m13 99, 163 gndpecl ? digital gnd - pecl signal detect inputs. ground return for pecl signal detect input circuits. p5, p6, p13, r7, r9, r11, r13, u8 106, 112, 120, 126, 135, 141, 149, 155 gndr ? analog ground - receive. ground return for receive analog supply. all ground pins can be tied together using a single ground plane. p14, r1, r3, r5, r15, r17, t17, u2, u4, u6, u10, u12, u14, u16, u17 113, 127, 134, 148 gndt ? analog ground - transmit. ground return for transmit analog supply. all ground pins can be tied together using a single ground plane. k14 179 sgnd ? substrate ground. ground for chip substrate. all ground pins can be tied together using a single ground plane. table 34 power supply signal descriptions ? bga23 (sheet 2 of 2) ball/pin designation symbol type signal description bga23 pqfp 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down.
page 119 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.4 bga23 signal descriptions table 35 unused/reserved pins ? bga23 pin/ball designation symbol type 1 signal description bga23 pqfp rmii - no connection f15, g2, g5, g14, g16, h4, h14, j2, j13, k4, k15 nc nc ? no connection. smii - no connection a4, a5, a7, a14, a16, b1, b2, b4, b8, b9, b11, b12, b15, b16, b17, c4, c6, c7, c8, c10, c12, c14, d4, d11, d12, d16, d17, e3, e4, e15, f4, f14, f15, g2, g5, g14, g16, h4, h14, j2, j13, k4, k15 nc nc ? no connection ss-smii - no connection a3, a4, a5, a7, a13, a14, a16, b2, b6, b8, b14, b16, c2, c4, c6, c10, c14, c15, d4, d9, d11, d12, d16, e15, e16, f4, f15, g2, g5, g14, g16, h4, h14, j2, j13, k4, k15 nc nc ? no connection 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. table 36 receive fifo depth configurations fifosel1 fifosel0 register 18.15 value register 18.14 value 00 10 01 11 10 00 11 01
page 120 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments 3.5 bga15 ball assignments the following figure and tables provide th e bga15 ball locations and signal names arranged in alphanumeric order as follows: ? figure 6, 196-ball bga15 assignments (top view) ? table 37, lxt9785mbc bga15 ball list in alphanumeric order by signal name , on page 121 ? table 38, lxt9785mbc bga15 ball list in alphanumeric order by ball location (smii/ss-smii) , on page 126 3.5.1 bga15 ball list the following tables provide the rmii bga23 ball locations and signal names arranged in alphanumeric order as follows: ? table 37, lxt9785mbc bga15 ball list in alphanumeric order by signal name , on page 121 ? table 38, lxt9785mbc bga15 ball list in alphanumeric order by ball location (smii/ss-smii) , on page 126 figure 6 196-ball bga15 assignments (top view) b1532-01 a 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 b c d e f g h j k l m n p a b c d e f g h j k l m n p p6 p5 p4 p3 p2 p1 n6 n5 n4 n3 n2 n1 m6 m5 m4 m3 m2 m1 l6 l5 l4 l3 l2 l1 k6 k5 k4 k3 k2 k1 j6 j5 j4 j3 j2 j1 h6 h5 h4 h3 h2 h1 g6 g5 g4 g3 g2 g1 f14 f13 f12 f11 f10 f9 f8 f7 f6 f5 f4 f3 f2 f1 e14 e13 e12 e11 e10 e9 e8 e7 e6 e5 e4 e3 e2 e1 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 c14 c13 c12 c11 c10 c9 c8 c7 c6 c5 c4 c3 c2 c1 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b1 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 b2 g7 g8 g9 g10 g11 g12 g13 g14 h7 h8 h9 h10 h11 h12 h13 h14 j7 k7 l7 m7 j8 k8 l8 m8 j9 k9 l9 m9 j10 k10 l10 m10 j11 k11 l11 m11 j12 k12 l12 m12 j13 k13 l13 m13 j14 k14 l14 m14 n7 p7 n8 p8 n9 p9 n10 p10 n11 p11 n12 p12 n13 p13 n14 p14
page 121 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments table 37 lxt9785mbc bga15 ball list in alphanumeric order by signal name (sheet 1 of 6) signal name ball type reference for full description add_3 p10 i, st, id table 39 add_4 n10 i, st, id table 39 amdix_en k8 i, st, ip table 39 avcc d12 ? table 39 avcc e12 ? table 39 avcc f12 ? table 39 avcc g12 ? table 39 avcc h12 ? table 39 avcc j12 ? table 39 avcc k12 ? table 39 avcc l12 ? table 39 avss e11 ? table 39 avss f9 ? table 39 avss f10 ? table 39 avss f11 ? table 39 avss g9 ? table 39 avss g10 ? table 39 avss g11 ? table 39 avss h9 ? table 39 avss h10 ? table 39 avss h11 ? table 39 avss j9 ? table 39 avss j10 ? table 39 avss j11 ? table 39 avss k11 ? table 39 avss l11 ? table 39 cfg_1 m10 i, st, id table 39 cfg_2 l9 i, st, id table 39 cfg_3 m9 i, st, id table 39 fifosel0 f1 i, id table 39 fifosel1 c1 i, id table 39 gndd a1 ? table 39 gndd a2 ? table 39 gndd a3 ? table 39 gndd b1 ? table 39 gndd b2 ? table 39 gndd b5 ? table 39
page 122 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments gndd b10 ? table 39 gndd d9 ? table 39 gndd d11 ? table 39 gndd e5 ? table 39 gndd e6 ? table 39 gndd e9 ? table 39 gndd e10 ? table 39 gndd f5 ? table 39 gndd f6 ? table 39 gndd f7 ? table 39 gndd f8 ? table 39 gndd g4 ? table 39 gndd g6 ? table 39 gndd g7 ? table 39 gndd g8 ? table 39 gndd h6 ? table 39 gndd h7 ? table 39 gndd h8 ? table 39 gndd j5 ? table 39 gndd j6 ? table 39 gndd j7 ? table 39 gndd j8 ? table 39 gndd k5 ? table 39 gndd k6 ? table 39 gndd k9 ? table 39 gndd k10 ? table 39 gndd l2 ? table 39 gndd n1 ? table 39 gndd n11 ? table 39 gndd p1 ? table 39 gndd p11 ? table 39 led0_1_l n9 od, ts, sl, ip table 39 led0_2_l p9 od, ts, sl, ip table 39 led0_3_l m8 od, ts, sl, ip table 39 led1_1_l n8 od, ts, sl, ip table 39 led1_2_l p8 od, ts, sl, ip table 39 led1_3_l l8 od, ts, sl, ip table 39 led2_1_l p7 od, ts, sl, ip table 39 table 37 lxt9785mbc bga15 ball list in alphanumeric order by signal name (sheet 2 of 6) signal name ball type reference for full description
page 123 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments led2_2_l n7 od, ts, sl, ip table 39 led2_3_l m7 od, ts, sl, ip table 39 led3_1_l p6 od, ts, sl, ip table 39 led3_2_l n6 od, ts, sl, ip table 39 led3_3_l m6 od, ts, sl, ip table 39 led4_1_l b9 od, ts, sl, ip table 39 led4_2_l a9 od, ts, sl, ip table 39 led4_3_l d8 od, ts, sl, ip table 39 led5_1_l b8 od, ts, sl, ip table 39 led5_2_l a8 od, ts, sl, ip table 39 led5_3_l c7 od, ts, sl, ip table 39 led6_1_l a7 od, ts, sl, ip table 39 led6_2_l b7 od, ts, sl, ip table 39 led6_3_l d6 od, ts, sl, ip table 39 led7_1_l b6 od, ts, sl, ip table 39 led7_2_l a6 od, ts, sl, ip table 39 led7_3_l d5 od, ts, sl, ip table 39 linkhold b3 id table 39 mdc p4 i, st, id table 39 mdint_l p5 od, ts, sl, ip table 39 mdio n5 io, ts, sl, ip table 39 modesel_0 c9 i, st, id table 39 modesel_1 e8 i, st, id table 39 nc c4 ? table 39 nc d1 ? table 39 nc d2 ? table 39 nc d10 ? table 39 nc e4 ? table 39 nc e7 ? table 39 nc g2 ? table 39 nc g5 ? table 39 nc h1 ? table 39 nc h5 ? table 39 nc j4 ? table 39 nc k4 ? table 39 nc k7 ? table 39 nc l1 ? table 39 nc l6 ? table 39 table 37 lxt9785mbc bga15 ball list in alphanumeric order by signal name (sheet 3 of 6) signal name ball type reference for full description
page 124 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments nc l10 ? table 39 nc m4 ? table 39 nc m5 ? table 39 nc p2 ? table 39 nc p3 ? table 39 refclk0 l4 i table 39 refclk1 c3 i table 39 reset_l c10 i, st, ip table 39 rxclk g1 o, ts, id table 39 rxdata0_s n3 o, ts table 39 rxdata0_ss m3 o, ts, id table 39 rxdata1_s m2 o, ts table 39 rxdata1_ss m1 o, ts, id table 39 rxdata2_s k2 o, ts table 39 rxdata2_ss j2 o, ts, id table 39 rxdata3_s h3 o, ts table 39 rxdata3_ss h2 o, ts, id table 39 rxdata4_s f2 o, ts table 39 rxdata4_ss f3 o, ts, id table 39 rxdata5_s e3 o, ts table 39 rxdata5_ss c2 o, ts table 39 rxdata6_s b4 o, ts table 39 rxdata6_ss a4 o, ts, id table 39 rxdata7_s c5 o, ts table 39 rxdata7_ss c6 o, ts, id table 39 rxsync e1 o, ts, id table 39 sgnd c8 ? table 39 sync/txsync k1 i, id table 39 tck a11 i, st, id table 39 tdi c12 i, st, ip table 39 tdo c11 o, ts table 39 tms b11 i, st, ip table 39 tpin0 n12 ai/ao table 39 tpin1 m13 ai/ao table 39 tpin2 l14 ai/ao table 39 tpin3 h13 ai/ao table 39 tpin4 g13 ai/ao table 39 tpin5 d14 ai/ao table 39 table 37 lxt9785mbc bga15 ball list in alphanumeric order by signal name (sheet 4 of 6) signal name ball type reference for full description
page 125 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments tpin6 c13 ai/ao table 39 tpin7 b12 ai/ao table 39 tpip0 p12 ai/ao table 39 tpip1 m14 ai/ao table 39 tpip2 l13 ai/ao table 39 tpip3 h14 ai/ao table 39 tpip4 g14 ai/ao table 39 tpip5 d13 ai/ao table 39 tpip6 c14 ai/ao table 39 tpip7 a12 ai/ao table 39 tpon0 n13 ao/ai table 39 tpon1 p14 ao/ai table 39 tpon2 k14 ao/ai table 39 tpon3 j13 ao/ai table 39 tpon4 f13 ao/ai table 39 tpon5 e14 ao/ai table 39 tpon6 a14 ao/ai table 39 tpon7 b13 ao/ai table 39 tpop0 p13 ao/ai table 39 tpop1 n14 ao/ai table 39 tpop2 k13 ao/ai table 39 tpop3 j14 ao/ai table 39 tpop4 f14 ao, ai table 39 tpop5 e13 ao/ai table 39 tpop6 b14 ao/ai table 39 tpop7 a13 ao/ai table 39 trst_l a10 i, st, ip table 39 txclk j3 i, id table 39 txdata0 n4 i, id table 39 txdata1 n2 i, id table 39 txdata2 k3 i, id table 39 txdata3 j1 i, id table 39 txdata4 g3 i, id table 39 txdata5 e2 i, id table 39 txdata6 d3 i, id table 39 txdata7 a5 i, id table 39 txslew_0 m11 i, st, id table 39 txslew_1 m12 i,st, id table 39 table 37 lxt9785mbc bga15 ball list in alphanumeric order by signal name (sheet 5 of 6) signal name ball type reference for full description
page 126 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments table 38 shows the ball locations and signal names arranged in order by ball location. vccd d7 ? table 39 vccd l7 ? table 39 vccio d4 ? table 39 vccio f4 ? table 39 vccio h4 ? table 39 vccio l3 ? table 39 vccio l5 ? table 39 table 37 lxt9785mbc bga15 ball list in alphanumeric order by signal name (sheet 6 of 6) signal name ball type reference for full description table 38 lxt9785mbc bga15 ball list in alphanumeric order by ball location (smii/ss-smii) (sheet 1 of 6) ball signal name type reference for full description a1 gndd ? table 39 a2 gndd ? table 39 a3 gndd ? table 39 a4 rxdata6_ss o, ts, id table 39 a5 txdata7 i, id table 39 a 6 led7_2_l od, ts, sl, ip table 39 a7 led6_1_l od, ts, sl, ip table 39 a8 led5_2_l od, ts, sl, ip table 39 a9 led4_2_l od, ts, sl, ip table 39 a10 trst_l i, st, ip table 39 a11 tck i, st, id table 39 a12 tpip7 ai/ao table 39 a13 tpop7 ao/ai table 39 a14 tpon6 ao/ai table 39 b1 gndd ? table 39 b2 gndd ? table 39 b3 linkhold id table 39 b4 rxdata6_s o, ts table 39 b5 gndd ? table 39 b6 led7_1_l od, ts, sl, ip table 39 b7 led6_2_l od, ts, sl, ip table 39 b8 led5_1_l od, ts, sl, ip table 39 b9 led4_1_l od, ts, sl, ip table 39 b10 gndd ? table 39 b11 tms i, st, ip table 39 b12 tpin7 ai/ao table 39
page 127 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments b13 tpon7 ao/ai table 39 b14 tpop6 ao/ai table 39 c1 fifosel1 i, id table 39 c2 rxdata5_ss o, ts, id table 39 c3 refclk1 i table 39 c4 nc ? table 39 c5 rxdata7_s o, ts table 39 c6 rxdata7_ss o, ts, id table 39 c7 led5_3_l od, ts, sl, ip table 39 c8 sgnd ? table 39 c9 modesel_0 i, st, id table 39 c10 reset_l i, st, ip table 39 c11 tdo o, ts table 39 c12 tdi i, st, ip table 39 c13 tpin6 ai/ao table 39 c14 tpip6 ai/ao table 39 d1 nc ? table 39 d2 nc ? table 39 d3 txdata6 i, id table 39 d4 vccio ? table 39 d5 led7_3_l od, ts, sl, ip table 39 d6 led6_3_l od, ts, sl, ip table 39 d7 vccd ? table 39 d8 led4_3_l od, ts, sl, ip table 39 d9 gndd ? table 39 d10 nc ? table 39 d11 gndd ? table 39 d12 avcc ? table 39 d13 tpip5 ai/ao table 39 d14 tpin5 ai/ao table 39 e1 rxsync o, ts, id table 39 e2 txdata5 i, id table 39 e3 rxdata5_s o, ts table 39 e4 nc ? table 39 e5 gndd ? table 39 e6 gndd ? table 39 e7 nc ? table 39 e8 modesel_1 i, st, id table 39 table 38 lxt9785mbc bga15 ball list in alphanumeric order by ball location (smii/ss-smii) (sheet 2 of 6) ball signal name type reference for full description
page 128 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments e9 gndd ? table 39 e10 gndd ? table 39 e11 avss ? table 39 e12 avcc ? table 39 e13 tpop5 ao/ai table 39 e14 tpon5 ao/ai table 39 f1 fifosel0 i, id table 39 f2 rxdata4_s o, ts table 39 f3 rxdata4_ss o, ts, id table 39 f4 vccio ? table 39 f5 gndd ? table 39 f6 gndd ? table 39 f7 gndd ? table 39 f8 gndd ? table 39 f9 avss ? table 39 f10 avss ? table 39 f11 avss ? table 39 f12 avcc ? table 39 f13 tpon4 ao/ai table 39 f14 tpop4 ao, ai table 39 g1 rxclk o, ts, id table 39 g2 nc ? table 39 g3 txdata4 i, id table 39 g4 gndd ? table 39 g5 nc ? table 39 g6 gndd ? table 39 g7 gndd ? table 39 g8 gndd ? table 39 g9 avss ? table 39 g10 avss ? table 39 g11 avss ? table 39 g12 avcc ? table 39 g13 tpin4 ai/ao table 39 g14 tpip4 ai/ao table 39 h1 nc ? table 39 h2 rxdata3_ss o, ts, id table 39 h3 rxdata3_s o, ts table 39 h4 vccio ? table 39 table 38 lxt9785mbc bga15 ball list in alphanumeric order by ball location (smii/ss-smii) (sheet 3 of 6) ball signal name type reference for full description
page 129 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments h5 nc ? table 39 h6 gndd ? table 39 h7 gndd ? table 39 h8 gndd ? table 39 h9 avss ? table 39 h10 avss ? table 39 h11 avss ? table 39 h12 avcc ? table 39 h13 tpin3 ai/ao table 39 h14 tpip3 ai/ao table 39 j1 txdata3 i, id table 39 j2 rxdata2_ss o, ts, id table 39 j3 txclk i, id table 39 j4 nc ? table 39 j5 gndd ? table 39 j6 gndd ? table 39 j7 gndd ? table 39 j8 gndd ? table 39 j9 avss ? table 39 j10 avss ? table 39 j11 avss ? table 39 j12 avcc ? table 39 j13 tpon3 ao/ai table 39 j14 tpop3 ao/ai table 39 k1 sync/txsync i, id table 39 k2 rxdata2_s o, ts table 39 k3 txdata2 i, id table 39 k4 nc ? table 39 k5 gndd ? table 39 k6 gndd ? table 39 k7 nc ? table 39 k8 amdix_en i, st, ip table 39 k9 gndd ? table 39 k10 gndd ? table 39 k11 avss ? table 39 k12 avcc ? table 39 k13 tpop2 ao/ai table 39 k14 tpon2 ao/ai table 39 table 38 lxt9785mbc bga15 ball list in alphanumeric order by ball location (smii/ss-smii) (sheet 4 of 6) ball signal name type reference for full description
page 130 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments l1 nc ? table 39 l2 gndd ? table 39 l3 vccio ? table 39 l4 refclk0 i table 39 l5 vccio ? table 39 l6 nc ? table 39 l7 vccd ? table 39 l8 led1_3_l od, ts, sl, ip table 39 l9 cfg_2 i, st, id table 39 l10 nc ? table 39 l11 avss ? table 39 l12 avcc ? table 39 l13 tpip2 ai/ao table 39 l14 tpin2 ai/ao table 39 m1 rxdata1_ss o, ts, id table 39 m2 rxdata1_s o, ts table 39 m3 rxdata0_ss o, ts, id table 39 m4 nc ? table 39 m5 nc ? table 39 m6 led3_3_l od, ts, sl, ip table 39 m7 led2_3_l od, ts, sl, ip table 39 m8 led0_3_l od, ts, sl, ip table 39 m9 cfg_3 i, st, id table 39 m10 cfg_1 i, st, id table 39 m11 txslew_0 i, st, id table 39 m12 txslew_1 i,st, id table 39 m13 tpin1 ai/ao table 39 m14 tpip1 ai/ao table 39 n1 gndd ? table 39 n2 txdata1 i, id table 39 n3 rxdata0_s o, ts table 39 n4 txdata0 i, id table 39 n5 mdio io, ts, sl, ip table 39 n6 led3_2_l od, ts, sl, ip table 39 n7 led2_2_l od, ts, sl, ip table 39 n8 led1_1_l od, ts, sl, ip table 39 n9 led0_1_l od, ts, sl, ip table 39 n10 add_4 i, st, id table 39 table 38 lxt9785mbc bga15 ball list in alphanumeric order by ball location (smii/ss-smii) (sheet 5 of 6) ball signal name type reference for full description
page 131 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.5 bga15 ball assignments n11 gndd ? table 39 n12 tpin0 ai/ao table 39 n13 tpon0 ao/ai table 39 n14 tpop1 ao/ai table 39 p1 gndd ? table 39 p2 nc ? table 39 p3 nc ? table 39 p4 mdc i, st, id table 39 p5 mdint_l od, ts, sl, ip table 39 p6 led3_1_l od, ts, sl, ip table 39 p7 led2_1_l od, ts, sl, ip table 39 p8 led1_2_l od, ts, sl, ip table 39 p9 led0_2_l od, ts, sl, ip table 39 p10 add_3 i, st, id table 39 p11 gndd ? table 39 p12 tpip0 ai/ao table 39 p13 tpop0 ao/ai table 39 p14 tpon1 ao/ai table 39 table 38 lxt9785mbc bga15 ball list in alphanumeric order by ball location (smii/ss-smii) (sheet 6 of 6) ball signal name type reference for full description
page 132 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.6 bga15 signal descriptions 3.6 bga15 signal descriptions 3.6.1 signal name conventions signal names may contain either a port desi gnation or a serial designation, or a combination of the two designations. signal naming conventions are as follows: ? port number only. individual signals that apply to a particular port are designated by the signal mnemonic, immediately followed by the port designation. for example, transmit enable signals would be ident ified as txen0, txen1, and txen2. ? serial number only. a set of signals which are not tied to any specific port are designated by the signal mnemonic, followed by an underscore and a serial designation. for example, a set of thre e global configuration signals would be identified as cfg_1, cfg_2, and cfg_3. ? port and serial number. in cases where each port is assigned a set of multiple signals, each signal is designated in th e following order: signal mnemonic, port designation, an underscore, and the serial designation. for example, a set of three port configuration signals would be identified as rxdata0_0 and rxdata0_1, rxdata1_0 and rxdata1_1, and rxdata2_0 and rxdata2_1. 3.6.2 signal descriptions ? smii and ss-smii configurations table 39 provides the bga15 signal descriptions. table 39 bga15 signal descriptions (sheet 1 of 7) symbol bga15 ball designation type signal description smii/ss-smii common signal descriptions txdata0 txdata1 txdata2 txdata3 txdata4 txdata5 txdata6 txdata7 n4, n2, k3, j1, g3, e2, d3, a5 i, id transmit data - ports 0-7. these serial input streams provide data to be transmitted to the network. the lxt9785/lxt9785e clocks the data in synchronously to refclk. refclk1 refclk0 c3 l4 i reference clock. the lxt9785/lxt9785e always requires a 125 mhz reference clock input. refer to section 4.4.2, clock/sync requirements , on page 148 for detailed clock requirements. smii specific signal descriptions sync k1 i, id smii synchronization. the mac must generate a sync pulse every 10 refclk cycles to synchronize the smii. 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. switched to tpip/n inputs when mdix is not active (twisted-pair, non-crossover mdi mode). 3. switched to tpop/n outputs when mdix is not active (twisted-pair, non-crossover mdi mode).
page 133 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.6 bga15 signal descriptions rxdata0_s rxdata1_s rxdata2_s rxdata3_s rxdata4_s rxdata5_s rxdata6_s rxdata7_s n3, m2, k2, h3, f2, e3, b4, c5 o, ts receive data - ports 0-7 . these serial output streams provide data received from the network. the lxt9785/lxt9785e drives the data out synchronously to refclk. ss-smii specific signal descriptions txsync k1 i, id ss-smii transmit synchronization. the mac must generate a txsync pulse every 10 txclk cycles to mark the start of txdata segments. rxsync e1 o, ts, id ss-smii receive synchronization. the lxt9785/lxt9785e generates these pulses every 10 rxclk cycles to mark the star t of rxdata segments for the mac. txclk j3 i, id ss-smii transmit clock. the mac sources this 125 mhz clock as the timing reference for txdata and txsync. rxclk g1 o, ts, id ss-smii receive clock. the lxt9785/lxt9785e generates these clocks, based on refclk, to provide a timing reference for rxdata and rxsync to the mac. rxdata0_ss rxdata1_ss rxdata2_ss rxdata3_ss rxdata4_ss rxdata5_ss rxdata6_ss rxdata7_ss m3, m1, j2, h2, f3, c2, a4, c6 o, ts, id receive data - ports 0-7. these serial output streams provide data received from the network. the lxt9785/lxt9785e drives the data out synchronously to refclk. mdio control interface signal descriptions mdio n5 i/o, ts, sl, ip management data input/output. bidirectional serial data c hannel for communication between the phy and mac or switch asic. refer to figure 21 on page 161 . mdint_l p5 od, ts, sl, ip management data interrupt. when register bit 18.1 = 1, an active low output on this pin indicates status change. refer to figure 21 on page 161 . mdc p4 i, st, id management data clock. clock for the mdio serial data channel. maximum frequency is 20 mhz. only mdc0 is used when 1x8 port sectionalization is selected. in 2x4 port sectionalization mode, mdc0 clocks ports 0-3 register accesses and mdc1 clocks ports 4-7 register accesses. refer to figure 21 on page 161 . network interface signal description table 39 bga15 signal descriptions (sheet 2 of 7) symbol bga15 ball designation type signal description 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. switched to tpip/n inputs when mdix is not active (twisted-pair, non-crossover mdi mode). 3. switched to tpop/n outputs when mdix is not active (twisted-pair, non-crossover mdi mode).
page 134 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.6 bga15 signal descriptions tpop0, tpon0 tpop1, tpon1 tpop2, tpon2 tpop3, tpon3 tpop4, tpon4 tpop5, tpon5 tpop6, tpon6 tpop7, tpon7 p13, n13, n14, p14, k13, k14, j14, j13, f14, f13, e13, e14, b14, a14, a13, b13 ao/ai twisted-pair outputs 2 , positive & negative, ports 0-7. during 100base-tx or 10base-t operation, tpo pins drive 802.3 compliant pulses onto the line. tpip0, tpin0 tpip1, tpin1 tpip2, tpin2 tpip3, tpin3 tpip4, tpin4 tpip5, tpin5 tpip6, tpin6 tpip7, tpin7 p12, n12, m14, m13, l13, l14, h14, h13, g14, g13, d13, d14, c14, c13, a12, b12 ai/ao twisted-pair inputs 3 , positive & negative, ports 0-7. during 100base-tx or 10base-t operation, tpi pins receive differential 100base-tx or 10base-t signals from the line. jtag test signal description tdi c12 i, st, ip test data input. test data sampled with respect to the rising edge of tck. tdo c11 o, ts test data output. test data driven with respect to the falling edge of tck. tms b11 i, st, ip test mode select. tck a11 i, st, id test clock. clock input for jtag test. trst_l a10 i, st, ip test reset. reset input for jtag test. miscellaneous signal description txslew_0 txslew_1 m11, m12 i, st, id tx output slew controls 0 and 1 defaults. these pins are read at startup or reset. their value at that time is used to set the default state of register bits 27.11:10 for all ports. these register bits can be read and overwritten after startup / reset. these pins select the tx output slew rate for all ports (rise and fall time) as follows: txslew_1 txslew_0 slew rate (rise and fall time) 0 0 3.3 ns 0 1 3.6 ns 1 0 3.9 ns 1 1 4.2 ns table 39 bga15 signal descriptions (sheet 3 of 7) symbol bga15 ball designation type signal description 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. switched to tpip/n inputs when mdix is not active (twisted-pair, non-crossover mdi mode). 3. switched to tpop/n outputs when mdix is not active (twisted-pair, non-crossover mdi mode).
page 135 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.6 bga15 signal descriptions reset_l c10 i, st, ip reset. this active low input is ored with the control register reset register bit 0.15. when held low, all outputs are forced to inactive state. pin is not on jtag chain. add_4 add_3 n10, p10 i, st, id address <4:3>. sets base address to one of the following four possible addresses: ? 00000 ? 01000 ? 10000 ? 11000 each port adds its port number (starting with 0) to this address to determine its phy address. port 0 address = base port 1 address = base + 1 port 2 address = base + 2 port 3 address = base + 3 port 4 address = base + 4 port 5 address = base + 5 port 6 address = base + 6 port 7 address = base + 7 modesel_1 modesel_0 e8 c9, i, st, id mode select[1:0]. 00 = reserved 01 = smii 10 = ss-smii 11 = reserved all ports are configured the same. interfaces cannot be mixed and must be all smii or ss-smii. amdix_en k8 i, st, ip auto mdi/mdix enable default. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 27.9 for all ports. these register bits can be read and overwritten after startup / reset. refer to table 40 on page 142 . when active (high), automatic mdi crossover (mdix) (regardless of segmentation) is selected for all ports. when inactive (low) mdix is selected according to the mdix pin. cfg_1 cfg_2 cfg_3 m10, l9, m9 i, st, id global port configuration defaults 1-3. these pins are read at startup or reset. their value at that time is used to set the default state of register bits shown in table 42, global hardware configuration settings , on page 152 for all ports. these register bits can be read and overwritten after startup / reset. when operating in hardware control mode, these pins provide configuration control options for all the ports (refer to page 152 for details). table 39 bga15 signal descriptions (sheet 4 of 7) symbol bga15 ball designation type signal description 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. switched to tpip/n inputs when mdix is not active (twisted-pair, non-crossover mdi mode). 3. switched to tpop/n outputs when mdix is not active (twisted-pair, non-crossover mdi mode).
page 136 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.6 bga15 signal descriptions fifosel1 fifosel0 c1, f1 i, id, st fifo select <1:0>. these pins are read at startup or reset. their value at that time is used to set the default state of register bits 18.15:14 for all ports. these register bits can be read and overwritten after startup/reset. these pins are shared with rmii-rxer<5:4>. an external pull-up resistor (see applications section for value) can be used to set fifo select<1:0> to active while rxer<5:4> are three-stated during hardware reset. if no pull-up is used, the default fifo select state is set via the internal pull-down resistors. see table 36, receive fifo depth configurations , on page 119 . linkhold b3 i, id, st linkhold defaul t. this pin is read at startup or reset. its value at that time is used to set the default state of register bit 0.11 for all ports. this register bit can be read and overwritten after startup / reset. when high, the lxt9785/lxt9785e powers down all ports. this pin is shared with rmii- rxer6. an external pull-up resistor (see applications section for value) can be used to set linkhold active while rxer6 is three-stated during h/w reset. if no pull-up is used, the default linkhold state is set inactive via the in ternal pull-down resistor. led signal descriptions led0_1_l led0_2_l led0_3_l n9 p9 m8 od, ts, sl, ip port 0 led drivers 1-3. these pins drive led indicators for port 0. each led can display one of several avail able status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). led1_1_l led1_2_l led1_3_l n8 p8 l8 od, ts, sl, ip port 1 led drivers 1-3. these pins drive led indicators for port 1. each led can display one of several avail able status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). led2_1_l led2_2_l led2_3_l p7 n7 m7 od, ts, sl, ip port 2 led drivers 1-3. these pins drive led indicators for port 2. each led can display one of several avail able status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). led3_1_l led3_2_l led3_3_l p6 n6 m6 od, ts, sl, ip port 3 led drivers 1-3. these pins drive led indicators for port 3. each led can display one of several avail able status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). table 39 bga15 signal descriptions (sheet 5 of 7) symbol bga15 ball designation type signal description 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. switched to tpip/n inputs when mdix is not active (twisted-pair, non-crossover mdi mode). 3. switched to tpop/n outputs when mdix is not active (twisted-pair, non-crossover mdi mode).
page 137 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.6 bga15 signal descriptions led4_1_l led4_2_l led4_3_l b9 a9 d8 od, ts, sl, ip port 4 led drivers 1-3. these pins drive led indicators for port 4. each led can display one of several avail able status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). led5_1_l led5_2_l led5_3_l b8 a8 c7 od, ts, sl, ip port 5 led drivers 1-3. these pins drive led indicators for port 5. each led can display one of several avail able status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). led6_1_l led6_2_l led6_3_l a7 b7 d6 od, ts, sl, ip port 6 led drivers 1-3. these pins drive led indicators for port 6. each led can display one of several avail able status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). led7_1_l led7_2_l led7_3_l b6 a6 d5 od, ts, sl, ip port 7 led drivers 1-3. these pins drive led indicators for port 7. each led can display one of several avail able status conditions as selected by the led configuration register (refer to table 97, led configuration register (address 20, hex 14) , on page 226 for details). power supply signal descriptions avcc d12, e12, f12, g12, h12, j12, k12, l12, ? analog power supply. +2.5 v supply for analog circuits. avss e11, f9, f10, f11, g9, g10, g11, h9, h10, h11, j9, j10, j11, k11, l11 ? analog ground. ground return for analog supply (avcc). all grounds can be tied together using a single ground plane. vccd d7, l7 ? digital power supply - core. +2.5 v supply for core digital circuits. vccio d4, f4, h4, l3, l5, ? digital power supply - i/o ring. +2.5/3.3 v supply for digital i/o circuits. the digital input circuits running off of this ra il, having a ttl-level threshold and over-voltage protection, may be interfaced with 3.3/5.0 v, when the io supply is 3.3 v, and 2.5/3.3/5.0 v when 2.5 v. table 39 bga15 signal descriptions (sheet 6 of 7) symbol bga15 ball designation type signal description 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. switched to tpip/n inputs when mdix is not active (twisted-pair, non-crossover mdi mode). 3. switched to tpop/n outputs when mdix is not active (twisted-pair, non-crossover mdi mode).
page 138 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 3.6 bga15 signal descriptions gndd a1, a2, a3, b1, b2, b5, b10, d9, d11, e5, e6, e9, e10, f5, f6, f7, f8, g4, g6, g7, g8, h6, h7, h8, j5, j6, j7, j8, k5, k6, k9, k10, l2, n1, n11, p1, p11 ? digital ground. ground return for core digital supplies (vccd). all ground pins can be tied together using a single ground plane. sgnd c8 ? substrate ground. ground for chip substrate. all ground pins can be tied together using a single ground plane. unused/reserved balls nc c4, d1, d2, d10, e4, e7, g2, g5, h1, h5, j4, k4, k7, l1, l6, l10, m4, m5, p2, p3 ? no connection. table 39 bga15 signal descriptions (sheet 7 of 7) symbol bga15 ball designation type signal description 1. type column coding: i = input, o = output, od = open drain output, st = schmitt triggered input, ts = three-state-able output, sl = slew-rate limited output, ip = weak internal pull-up, id = weak internal pull-down. 2. switched to tpip/n inputs when mdix is not active (twisted-pair, non-crossover mdi mode). 3. switched to tpop/n outputs when mdix is not active (twisted-pair, non-crossover mdi mode).
page 139 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.0 functional description 4.0 functional description 4.1 introduction the cortina systems ? lxt9785/lxt9785e is an 8-port fast ethernet 10/100 phy transceiver that supports 10 mbps and 100 m bps networks, complying with all applicable requirements of ieee 802.3 standards. the device incorporates a serial media independent interface (smii), source synchr onous-serial media independent interface (ss-smii), and a reduced serial independent interface (rmii) to en able each individual network port to interface with multiple 10/100 macs. each port directly drives either a 100base-tx line or a 10base-t line. th e lxt9785/lxt9785e also supports 100base-fx operation via an l vpecl interface. the device ha s a 241-ball bga, a 208-pin qfp, or a 196-ball bga package. the 196-ball bga package (bga15) is a reduce d feature-set product designated as the lxt9785mbc. the bga15 package does not support the following features: ?rmii ?fiber ? sectionalization ? hardware control pins: ? pause ?mdix ?mddis ? pwrdwn ? lower three phy address (out of five phy address bits) ? extended temperature note: unless otherwise noted, all information in th is document applies to the lxt9785 and lxt9785e. 4.1.1 osp? architecture the lxt9785/lxt9785e incorporates high-eff iciency optimal signal processing? design techniques, combining the best properties of digital and analog signal processing to produce a truly optimal device. the receiver utilizes decision feedback equa lization to increase noise and cross-talk immunity by as much as 3 db over an ideal all-analog equalizer. using osp mixed-signal processing techniques in the receive equalizer avoids the quantization noise and calculation truncation errors found in tradit ional dsp-based receiver s (typically complex dsp engines with a/d converters). the result is improved receiver noise and cross-talk performance. the osp architecture also requires substantia lly less computational logic than traditional dsp-based designs. the result is lower po wer consumption and reduced logic switching noise generated by dsp engines clocked at speeds up to 125 mhz. the logic switching noise can be a considerable source of emi when generated from the device?s power supplies. the osp-based lxt9785/lxt9785e provides improved data recovery, emi performance and power consumption.
page 140 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.2 interface descriptions 4.1.2 comprehensive functionality the lxt9785/lxt9785e performs all functions of the physical coding sublayer (pcs) and physical media attachment (pma) sublayer as defined in the ieee 802.3 100base-x specification. this device also performs all functions of the physical media dependent (pmd) sublayer for 10 0base-tx connections. on power-up, the lxt9785/lxt9785e reads its configuration inputs to check for forced operation settings. if not configured fo r forced operation, each port uses auto-negotiation/parallel detection to automatic ally determine line operating conditions. if the phy device on the other side of the link supports auto-negotiation, the lxt9785/lxt9785e auto-negotiates with it usi ng fast link pulse (flp) bursts. if the phy partner does not support auto -negotiation, the lxt9785/lxt9 785e automatically detects the presence of either link pulses (10 mbps ph y) or idle symbols (100 mbps phy) and set its operating conditions accordingly. the lxt9785/lxt9785e provides half-duplex and full-duplex operation at 100 mbps and 10 mbps. 4.1.2.1 sectionalization the lxt9785/lxt9785e?s sectio nal design allows flexibility with large multip ort macs and asics. with the use of the section pin, th e lxt9785/lxt9785e can be configured into a single 8-port or two separate 4-port sections, each with its own mdio (with separate mdc clock) and mii data (with separate refc lk/txclk/rxclk clocks) interfaces. see figure 16, typical smii quad sectionalization , on page 156 , figure 21, typical ss-smii quad sectionalization , on page 161 , and figure 26, typical rmii quad sectionalization , on page 165 . note: the bga15 package does not support sectionalization. 4.2 interface descriptions 4.2.1 10/100 network interface the lxt9785/lxt9785e supports 10 mbps and 100 mbps (10base-t and 100base-tx) ethernet over twisted-pair, or 100 mbps ( 100base-fx) ethernet over fiber media. each network interface port consists of four external pins (two diff erential signal pairs). the pins are shared between twisted-pair (tp) and fiber . the lxt9785/lxt9785e pinout is designed to interface seamlessly with dual-high stacked rj-45 connectors. refer to table 11, network interface signal descriptions ? pqfp , on page 49 for specific pin assignments. the lxt9785/lxt9785e output drivers g enerate either 100base-tx, 10base-t, or 100base-fx output. when not transmitting data, th e device generates ieee 802.3-compliant link pulses or idle code. input signals are decoded either as a 100base-tx, 100base-fx, or 10base-t inpu t, depending on th e mode selected. auto-negotiation/parallel detection or manual co ntrol is used to determine the speed of this interface.
page 141 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.2 interface descriptions 4.2.1.1 twisted-pair interface the lxt9785/lxt9785e su pports either 100base-tx or 10base-t connecti ons over 100 ? , category 5, unshielded twisted-pair (utp ). only a transformer, rj-45, and bypass capacitors are required to co mplete this interface. usin g waveshaping technology, the transmitter shapes the outgoing signal to help reduce the need for external emi filters. four slew rate settings (refer to table 13, miscellaneous signal descriptions ? pqfp , on page 50 ) allow the designer to match the output wave form to the magnetic characteristics. both transmit and receive terminations are built into the lxt9785/lxt9785e so no external components are required between the lxt9785/lxt9785e and the external transformer. the transmitter uses a transformer with a center tap to help reduce power consumption. when operating at 100 mbps, mlt3 symbols are continuously transmitted and received. when not transmitting data, the lxt978 5/lxt9785e generates ?idle? symbols. during 10 mbps operation, lxt9785/lxt9785e encoded data is exchanged. when no data are being exchanged, the line is left in an idle state with nlps transmitted to maintain link. figure 7 interface signals txen n rxd n_ 0 txd n_ 0 txd n_ 1 rxd n_ 1 crs_dv n rxer n data interface mddis mdc n mdint n mdio n mdio management interface led n_ 2 led n _3 port leds/ controls add[4:0] tpfop n tpfon n tpfip n tpfin n network interface vccio +3.3v or +2.5v vccd +2.5v gndd .01uf addr & mdix/ contr mode select mdix_enb direct drive txclk rxclk led n_1 b3369-01
page 142 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.3 media inde pendent interface (mii) interfaces 4.2.1.2 mdi crossover (mdix) the lxt9785/lxt9785e crossove r function, which is compliant to the ieee 802.3, clause 23 standard, connects the transmit output of the device to the far-end receiver in a link segment. this function can be disabled via regi ster bits 27.9:8 or by using the hardware configuration pins. note: the bga15 package does not support mdix har dware configuration. software must be used to control the function after power-up. 4.2.1.3 fiber interface the lxt9785/lxt9785e fiber ports are designed to interface with common industry-standard 3.3 v and 5 v fiber transceivers. each of the 8 ports incorporates a low-voltage pecl interface that complies with the ansi x3.166 standard for seamless integration. note: the bga15 package does not support the fiber interface. fiber mode is selected through register bit 16.0 by the following two methods: 1. configure register bit 16.0 = 1 on a global basis (all 8 ports) by driving the hardware control pin g_fx/tp_l to a logic high value on power-up and/or reset. 2. configure register bit 16.0 = 1 on a pe r-port basis through the mdio interface. the fiber interface is capable of full-duplex or half-duplex operation. in half duplex, operation collisions must be ma naged by external layer 2 logi c (mac). auto negotiation is not supported for fiber mode. 4.3 media independent in terface (mii) interfaces the lxt9785/lxt9785e supports reduced mii or serial mii, but not concurrently. the interface mode selection pins configures the device for either rmii or smii/ss-smii on all eight ports. refer to table 41 for the mode select settings. note: the bga15 package does not support the rmii interface. 4.3.1 global mii mode select the mode select pins are used for mii interface configuration settings upon power-up sequencing. all ports are configured the same and cannot be intermixed. table 40 mdix selection amdix_en mdix mdix mode 0 0 mdi forced 0 1 mdix forced 1 x auto mdi/mdix
page 143 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.3 media inde pendent interface (mii) interfaces 4.3.2 internal loopback register bit 0.14 must be set to enable intern al loopback operation. register bits 16.14 and 0.8 must be set for 10 mbps operation. cortina recommends that auto-negotiation be disabled while internal loopback is enabled. the normal auto-negotiation process code word exchange cannot be completed.the following two-step sequence is recommended for the most efficient mode change when enabling forced 100 mbps internal loopback mode directly from auto -negotiation mode: 1. write register 0 with 0x21 00h (forced 100 mbps), and 2. write register 0 with 0x6100h (enable internal loopback with forced 100 mbps) this two-step process ensures the 100 mbps link comes up quickly. if the one-write process of writing 0x6100h is followed, it may take up to 1.5 seconds before link is established and data is received on the por t. the 1.5 second delay is due to the ieee auto-negotiation break link timer (blt) requirement. the timer must expire before link is established when changing modes directly from auto-negotiation to internal loopback forced 100 mbps mode. use the above two-step process to eliminate the auto-negotiation blt timer requirement. 4.3.3 rmii data interface the lxt9785/lxt9785e provides a separate rmii for each network port, each complying with the rmii specification, revision 1.2. the rmii includes both a data interface and an mdio management interface. the rmii data interface exchanges data between the lxt9785/lxt9785e and up to eight media access controllers (macs). table 41 mii mode select configuration modesel1 modesel0 rmii 1 00 smii 0 1 ss-smii 1 0 reserved 1 1 1. invalid for the bga15 package. figure 8 internal loopback loopback digital block analog block rmii/ smii/ ss- smii inter face fx driver tx driver lxt9785/9785e
page 144 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.3 media inde pendent interface (mii) interfaces 4.3.4 serial media independent interface (smii) and source synchronous- serial media in dependent interface (ss-smii) 4.3.4.1 smii interface the lxt9785/lxt9785e provides an independent serial interface for each network port, complying with the serial-mii specification, revision 1.2. all smii ports use a common reference clock and sync signal. the smii da ta interface exchanges data between the lxt9785/lxt9785e and multiple media access controllers (macs). all signals are synchronous to the reference clock. one sync co ntrol stream is sourced by the mac to the phy. both the transmit and receive data stre ams are segmented into boundaries delimited by the sync pulses. this interface is expected to drive up to 6 inches of trace lengths. 4.3.4.2 source synchronous-serial media independent interface the new revision to the smii interface, ss-smi i, allows for a longer trace length and helps to relieve timing constraints, requiring the a ddition of four new signals, txclk, txsync, rxclk, and rxsync. the transmit txclk a nd txsync are sourced from the mac to the phy and referenced to the refclk input. the receive rxclk and rxsync are sourced by the phy to the mac and in reference to the refclk. 4.3.5 configuration ma nagement interface the lxt9785/lxt9785e provides an mdio management interface and a hardware control interface (via the cfg pins) for device configuration and management. mode control selection is provided via the mddis pin as shown in table 9, mdio control interface signals ? pqfp , on page 48 . when sectionalization (2x4) is selected, separate mdio interfaces are enabled (see figure 13 on page 150 ). 4.3.6 mii isolate in applications where the mii must be isolated from the bus, the rmii and the smii/ss-smii configurations can be three-stated using register 0.10. on each individual port, register bit 0.10 controls the isolation of th e transmit and receive data sign als for that port. register bit 0.10 on ports 0 and 4 isolate the rxclk n /txclk n and sync signals. when 1x8 sectionalization is selected, txclk0, txsync0, rxclk1, and rxsync1 are used for the clocking and synchronization interf ace. port 4 controls th e isolation of rxclk0, rxclk1, rxsync0, and rxsync1, and must be used to isolate the receive clock and synchronization interface. when 2x4 sectionalization is selected, txcl k0, txsnc0, rxclk0, and txclk0 are used for port 0 through port 3 and txclk1, txsy nc1, rxclk1, and rxsync1 are used for port 4 through port 7. port 0 must be isolated to isolate the receive cl ock and synchronization interface for port 0 through port 3. port 4 must be isolated to isolate port 4 through port 7. 4.3.7 mdio management interface the lxt9785/lxt9785e supports the ieee 802.3 mii management interface, also known as the management data input/o utput (mdio) interfac e. this interface allows upper-layer devices to monitor and control the state of the lxt9785/lxt9785e. the mdio interface consists of a physical connecti on, a specific protocol that r uns across the connection, and an internal set of addressable registers. some registers are required and their functions are defined by the ieee 802.3 specification. additional registers allow for expanded functionality. specific bits in the registers are referenced using an ?x.y? notation, where x is the register number (0-32) and y is the bit number (0-15).
page 145 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.3 media inde pendent interface (mii) interfaces the physical interface consists of a data line (mdio) and clock line (mdc). operation of this interface is controlled by the mddis input pi n. when mddis is hig h, all the mdios are completely disabled. the hardwa re control interface provides primary configuration control. when mddis is low, the mdio port is enabled for both read and write operations and the hardware control interface is not used. note: the bga15 package does not support the mddis pin. the timing for the mdio interface is shown in table 80, mdio timing parameters , on page 212 . mdio read and write cycles are shown in figure 9, management interface read frame structure , on page 145 and figure 10, management interface write frame structure , on page 145 . the protocol allows one controller to co mmunicate with multiple lxt9785/lxt9785e devices. pins add_<4:0> determine the base address. each port adds its port number to the base address to obtain its port address as shown in figure 11 . the bga15 package uses a similar scheme where the add_[2:0] bits internally set to 0 and the add_[4:3] bits are used to select from four base addresses (0x00000b, 0x01000b, 0x10000b, or 0x11000b. figure 9 management interface read frame structure figure 10 management interface write frame structure mdc mdio (read) 32 "1"s 0110 preamble st op code phy address turn around z0 a4 a3 a0 r4 r3 r0 register address d15 d14 d1 data write read d15 d14 d1 d0 idle high z mdc mdio (write) 32 "1"s 0101 preamble st op code phy address turn around 1 0 a4 a3 a0 r4 r3 r0 register address d15 d14 d1 d0 data idle idle write
page 146 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.3 media inde pendent interface (mii) interfaces 4.3.8 mii sectionalization when sectionalized into two quad sections, the mdio bus splits into two separate phy access ports. ports 0-3 of the mdio sectio n operate independently of ports 4-7. the mii isolate function is unaffected and operates normally. sectiona lization is selected by pulling pin 176 (section) high on the initial power-up sequence (refer to figure 13 ). in applications that need sectionalization, such as 1x8 and 2x4 and have a single mdio bus structure, it is necessary that the addressing scheme be contig uous. for example, the first eight ports are addressed 0-7, so the next four ports must be addressed 8-11. note: the bga15 package does not support the mii sectionalization feature. 4.3.9 mii interrupts the lxt9785/lxt9785e provides a single per-sec tion interrupt pin that is available to all ports. interrupt logic is shown in figure 12 . the lxt9785/lxt9785e also provides two dedicated interrupt registers for each port. register 18 provides interrupt enable and mask functions and register 19 provides interrupt st atus. setting register bit 18.1 = 1 enables a port to request interrupt via the mdint_l pin. an active low on this pin indicates a status change on the device. because it is a shared inte rrupt, there is no indication which port is requesting interrupt service (see figure 12 ). there are five conditions that may cause an interrupt: ? auto-negotiation complete. ? speed status change. ? duplex status change. figure 11 port address scheme ba se add _< 4:0> (example add_<4:0> = 4) phy add_<4:0> (base+0) phy add_<4:0> (base+1) phy add_<4:0> (base+2) phy add_<4:0> (base+3) phy add_<4:0> (base+4) phy add_<4:0> (base+5) e x. 4 e x. 5 e x. 6 e x. 7 e x. 8 e x. 9 lxt9785 por t 0 por t 1 por t 2 port 3 port 4 port 5 phy add_<4:0> (base+7) ex. 11 por t 7 phy add_<4:0> (base+6) ex. 10 port 6 lxt9785/9785e
page 147 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.3 media inde pendent interface (mii) interfaces ? link status change. ? isolate status change. 4.3.10 global hardware control interface the lxt9785/lxt9785e provides a hardware control interface for applications where the mdio is not desired. refer to section 4.5, initialization , on page 149 for additional details. 4.3.11 fifo initial fill values the fifo initial f ill value sets the number of bits required to be wri tten into the fifo before the process of reading the packet out of the fi fo is started. the read operation is aligned on nibble boundaries because the fifo is one nibble wide. the read clock on the rmii and smii interfaces may occur any time within the ne xt available nibble. therefore, the effective size of the fifo is one nibble less than the selected size. large initial fill fifo settings alter both the data-path latenc y and the interframe gap (ifg) output on the rmii and smii interfaces. the latency values are increased or decreased depending on the number of bits the fifo size is increased or decreased. the ifg may decrease up to twice the size of the init ial fill fifo setting. w hen the following three conditions are met, the ipg on the rmii and smii interfaces may become nonexistent between packets, effectively concatenating the packets into one long corrupted packet: ? the frequency difference between the lin k partner and the local lxt9785/lxt9785e device exceed 200 ppm (the ieee standard requirement). ? jumbo packets (8192 byte packets or longer) are used. ? packets on the wire occur with minimum inter-packet gap (ipg) of 96 bit times. the concatenation of the packets is flagged by the mac as a crc error and possibly an oversized packet depending upon the length indication ca pabilities of the mac. the possibility of packet concatenation can be mi nimized on the rmii interface by setting the initial fill fifo register bits 18 .15:14 to 01. th e fifo setting bits shoul d be set to 10 for the smii interfaces. figure 12 interrupt logic force interrupt interrupt enable event x enable reg event x status reg interrupt pin . . . and or and . . . per port per event por t combine logic interrupt (event) status register is cleared on read. x = any int errupt capabi lity
page 148 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.4 operating requirements 4.4 operating requirements 4.4.1 power requirements the lxt9785/lxt9785e requires four power supply inputs: vccd, vcca, vccpecl and vccio. the digital and analog circuits requ ire 2.5 v supplies (vccd, vccr, and vcct). these inputs may be supplied from a single source although decoupling is required to each respective ground. the fiber vccpecl supply can be connected to either 2.5 v or 3.3 v. a separate power supply may be used for the mii, jtag and mdio (vccio) interfaces. the power supply may be either +2.5 v or +3.3 v. vccio should be supplied from the same power source used to supply the controller on the other side of the interface. refer to table 54, digital i/o dc electrical characteristics (vccio = 2.5 v +/- 5%) , on page 195 , table 55, digital i/o dc electrical characteristics (vccio = 3.3 v +/- 5%) , on page 196 , and table 56, digital i/o dc electrical characteristics ? sd pins , on page 196 for i/o characteristics. as a matter of good practice, these supplies shou ld be as clean as possible. typical filtering and decoupling are shown in figure 34 on page 189 . the power supplies should be brought up as close to the same time as possible. however, there are no specific timing requirements. 4.4.2 clock/sync requirements 4.4.2.1 reference clock the lxt9785/lxt9785e requires a constant enabled reference clock (refclk). refclk?s frequency must be 50 mhz for rmii or 125 mhz for smii/ss-smii. the reference clock is used to generate transmit signals and recover receive signals. a crystal-based clock is recommend ed over a derived clock (that is, pll-based) to minimize transmit jitter. refer to table 57, required clock characteristics , on page 196 for clock timing requirements. for applications that use a single 8-port se ctionalization, refclk0 and refclk1 must always be tied together and to the source. in 2x4 applications, refclk0 and refclk1 are not tied together. 4.4.2.2 txclk signal (ss-smii only) the lxt9785/lxt9785e requires a 125 mhz input transmit clock synchronous with txdata n and frequency locked to refclk . see figure 22 on page 162 . 4.4.2.3 txsync signal (smii/ss-smii) the lxt9785/lxt9785e requires a 12.5 mhz input pulse for smii synchronization. see figure 22 on page 162 . 4.4.2.4 rxsync signal (ss-smii only) the lxt9785/lxt9785e provides a 12.5 mhz output pulse synchronous with the rxdata n outputs. see figure 23 on page 162 .
page 149 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.5 initialization 4.4.2.5 rxclk signal (ss-smii only) in ss-smii mode, the lxt9785/lxt9785e provi des a 125 mhz clock output in reference to the output rxdata n . rxclk is referenced and synchronized to the refclk. see figure 23 on page 162 . note: although rxclk is referenced to refclk, the rxclk may vary in cumulative phase by up to four bit-times relative to refclk. 4.5 initialization when the lxt9785/lxt9785e is first powered on, re set, or encounters a link failure state, it checks the mdio register configuration bi ts to determine the line speed and operating conditions to use for the network link. the configuration bits may be set by the hardware control or mdio interface as shown in figure 13 on page 150 . 4.5.1 mdio control mode in the mdio control mode, the lxt9785/lxt9 785e reads the hardware control interface pins to set the initial (default) values of the mdio registers. once the initial values are set, bit control reverts to the mdio interface. 4.5.2 hardware control mode in the hardware control mode, the lxt9785/lx t9785e disables direct write operations to the mdio registers via the mdio interfac e. on power-up or hardware reset, the lxt9785/lxt9785e reads the hardware control in terface pins and sets the mdio registers accordingly. the following modes are available using either hardware control or mdio control: ? force network link to 100base-fx (fiber). ? force network link operation to: ? 100base-tx, full-duplex ? 100base-tx, half-duplex ? 10base-t, full-duplex ? 10base-t, half-duplex ? allow auto-negotiation/parallel-detection. ? auto/manual mdix enable/disable. ? pause for full-duplex links operation. ? global output slew rate control. when the network link is forced to a spec ific configuration, the lxt9785/lxt9785e immediately begins operating the network in terface as commanded. when auto-negotiation is enabled, the lxt9785/lxt9785e begins the auto-negotiation/ parallel-detection operation.
page 150 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.5 initialization 4.5.3 power-down mode the lxt9785/lxt9785e incorporates numerous features to maintain the lowest power possible. the device can be put into a low-power state via register 0 as well as a near-zero power state with the power down pin. when in power-down mode, the device is not capable of receiving or transmitting packets. the lowest power operation is achieved using the global power-down pin, which is active high. this pin powers down every circuit in the device, including all cl ocks. all registers are unaltered and maintained when the global pwrdwn pin is released. note: the bga15 package does not support the pwrdwn pin feature. individual ports (software power down) can be powered down using register bit 0.11. this bit powers down a significant portion of the port , but clocks to the register section remain active. this allows the management interface to remain active during register power-down. the power-down bit is active high. note: cortina recommends that a minimum recovery time be allowed after bringing up a port from software or hardware power-down or link hold-off modes. the recovery times are specified in table 81, power-up timing parameters , on page 213 figure 13 initialization sequence mddis voltage level? high low mdio control mode hardware control mode disable mdio writes reset mdio registers to values read at h/w control interface at last hardware reset pass control to mdio interface power-up or reset initialize mdio registers read h/w control interface hardware reset? software reset? yes yes
page 151 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.5 initialization 4.5.3.1 global (hardware) power down the global power-down mode is controlled by the pwrdwn pin. when pwrdwn is high, the following conditions are true: ? all lxt9785/lxt9785e ports and the clock are shut down. ? all outputs are three-stated. ? all weak pad pull-up and pull-down resistors are disabled. ? the mdio registers are not accessible. ? configuration pins are read upon release of the pwrdwn pin, and registers are loaded with the current values of the hardware configuration pins. 4.5.3.2 port (software) power down individual port power-dow n control is provided by register bit 0.11 in the respective port control registers (refer to table 84, control register (address 0) , on page 215 ). during individual port power-down, the following conditions are true: ? the individual port is shut down. ? the mdio registers remain accessible. ? pull-up and pull-down resisters are not affected and the outputs are not three-stated. ? the register remains unchanged. 4.5.4 reset the lxt9785/lxt9785e provides both hardware and software resets. configuration control of auto-negotiation, speed, and duplex mode selection is handled differently for each. during a hardware reset, settings for bits 0.13, 0. 12, 0.8, and 4.8:5 are read in from the pins (refer to table 42, global hardware configuration settings , on page 152 for pin settings, and table 84, control register (address 0) , on page 215 and table 88, auto-negotiation advertisement register (address 4) , on page 218 for register bit definitions). during a software reset (register bit 0.15 = 1), the bit settings are not re-read from the pins and revert back to the values that were read in during the last hard ware reset. any changes to pin values from the last hardware reset are not detected during a software reset. during a hardware reset, register information is unavailable for 1 ms after de-assertion of the reset. all mii interface pins are disabled du ring a hardware reset and released to the bus on de-assertion of reset. during a software reset (0.15 = 1) the registers are available for reading. the reset bit should be polled to see when the part has completed reset (0.15 = 0). pull up and pull down resisters are not affected. cortina recommends that a minimum recovery time be allowed after bringing up a port from software or hardware reset. the recovery times ar e specified in table 81, power-up timing parameters , on page 213 4.5.5 hardware configuration settings the lxt9785/lxt9785e provides a hardware option to set the initial device configuration. the hardware option uses three global cfg pins that provide control for all ports (see table 42 ).
page 152 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.6 link establishment 4.6 link establishment 4.6.1 auto-negotiation the lxt9785/lxt9785e attempts to auto-negotiate with its link partner by sending fast link pulse (flp) bursts. each burst consists of 33 link pulses spaced 62.5 ? s apart. odd link pulses (clock pulses) are always present. even link pulses (data pulses) may also be present or absent to indicate a ?1? or a ?0?. each flp burst exchanges 16 bits of data, referred to as a ?page?. all devices that support auto-negotiation must implement the ?base page?, defined by ieee 802.3 (registers 4 an d 5). the lxt9785/lxt9785e also supports the optional ?next page? function (registers 7 and 8). 4.6.1.1 base page exchange by exchanging base pages, the lxt9785/lxt9785e and its link partner communicate their capabilities to each other. both sides must receive at least three identical base pages for negotiation to proceed. each side finds their highest common capabilities, e xchange more pages, and agree on the operating state of the line. 4.6.1.2 manual next page exchange additional information, exceeding that required by base page exchange, is also sent via ?next pages.? the lxt9785/lxt9785e fully supp orts the ieee 802.3 method of negotiation via next page exchange. the next page exchange uses register 7 to send information and register 8 to receive it. next page exchange oc curs only if both ends of the link partners advertise their ability to exch ange next pages. a special mode has been added to make manual next page exchange easier for software. when register 6 ?page? is received, it stays set until read. this bit is cleared when a new negotiation occurs, preventing the user from reading an old value in register 6 and assuming there is valid information in registers 5 and 8. the page received bit is cleared upon reading the section table 90, auto-negotiation expansion register (address 6) , on page 220 . table 42 global hardware configuration settings desired mode cfg pin settings 1 resulting register bit values autoneg speed duplex 1 2 3 0.12 0.13 0.8 4.8 4.7 4.6 4.5 disabled 10 half low low low 0 0 0 n/a auto-negotiation advertisement full low low high 1 100 half low high low 1 0 full low high high 1 enabled 100 half high low low 1 1001 00 full/half high low high 1 0 1 1 10/100 half high high low 1 0 0 1 0 1 full/half high high high 1 0 1 1 1 1 1. refer to table 5, rmii signal descriptions ? pqfp , on page 43 through table 17, receive fifo depth considerations , on page 57 table 24, rmii signal descriptions ? bga23 , on page 105 through table 36, receive fifo depth configurations , on page 119 , and table 39, bga15 signal descriptions , on page 132 for cfg pin assignments.
page 153 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.6 link establishment 4.6.1.3 controlling auto-negotiation the following steps are recommended when auto-negotiation is controlled by software: ? after power-up, power-down, or reset, the power-down recovery time, as specified in table 81, power-up timing parameters , on page 213 , must be exhausted before proceeding. ? set the auto-negotiation advertisement re gister bits in register 4 as desired. ? enable auto-negotiation (set md io register bit 0.12 = 1). ? enable or restart auto-negotiation as soon as possible after writing to register 4 to ensure proper operation. 4.6.1.4 link criteria in 100 mbps mode, link is established when the descrambler becomes locked and remains locked for approximately 50 ms. link remains up unless the descrambler receives less than 16 consecutive idle symbols in any 2 ms period. this provides a robust operation, filtering out any small noise hits that may disrupt the link. mlt-3 idle waveforms, for short periods, meet all the criteria for 10base-t start delimiters. a working 10base-t receive may temporarily indicate link to 100base-tx waveforms. however, the phy will not brin g up a permanent 10 mbps link. according to the ieee standard 10 mbps link stat e machine, the last condition that must be met before 10 mbps link can come up is a period of transmit and receive idle time. txen and rxdv are inactive at the same time. this ensures that link is not brought up in the middle of transmitting or receiving a pa cket. to ensure link es tablishment, cortina recommends no packet transmission into the mii interface until link is established. the ieee standard references this requirement in section 14.2.3 state diagrams, figure 14-6-link integrity test function state diagram and in section 28.3.4 state diagrams, figure 28-17-nlp receive link integrity test state diagram. these diag rams illustrate that while the phy is in the link test fail extend st ate, the last state before link pass state) packet receive activity (rd) and transmit activity (do) must be idle (rd = idle * d0 = idle) for link to establish. 4.6.1.5 parallel detection in parallel with auto-negotiation, the lxt9785/lxt9785e also monitors for 10 mbps normal link pulses (nlp) or 100 mbps idle symbol s. if either symbol is detected, the device automatically reverts to the corresponding operating speed in half-duplex mode. parallel detection allows the lxt9785/lxt9785e to communicate with devices that do not support auto-negotiation. when parallel detection resolves a link, the lin k must be established in half-duplex mode. according to ieee standards, t he forced link partner cannot be configured to full-duplex. if the auto-negotiation link partne r does not advertise half-duplex capability at the speed of the forced link partner, link is not establis hed. the ieee standard prevents forced full-duplex-to-half-dup lex link connections.
page 154 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.7 serial mii operation 4.6.1.6 reliable link establishment while auto mdi/mdix is enabled in forced speed mode with auto mdi/mdix hardware enabled, end users experience reliable link establishment under all settings of auto mdi/mdix and speed between the lxt9785/lxt9785e and its link partners. as stated in the ieee clauses 40.4.5.1 (auto mdi/mdix) and 28.3.2 (parallel detect), when ports are forced to 10 mbps or 100 mbps and auto mdi/md ix is enabled, and the port is connected to a partner with au to-negotiation enabled, an undefined condition exists between the ieee auto mdix and paralle l detect specifications . link may not occur according to the ieee specification. during this undefined condition, when the lxt9785/lxt9785e is set to 10 mbps or 100 mbps and auto mdi/mdix is enabled, the lxt9785/lxt9785e and the link partner auto-negotiation processes are expected to be skewed enough to establish link in all but the rarest cases. auto mdi/mdix is configur ed through hardware and software. if auto mdi/mdix operation is desired in forced modes, disabling auto mdi/mdix using the software programming can aid link establishment. 4.7 serial mii operation the lxt9785/lxt9785e exchanges transmit and receive data with the controller via the serial mii (smii). the smii performs the following functions: ? conveys complete mii information between a 10/100 phy and mac with two pins per port. ? allows a multi-port mac/phy commu nication with one system clock. ? operates in both half and full-duplex. ? supports per-packet switching between 10 mbps and 100 mbps data rates. figure 14 auto-negotiation operation check value 0.12 start done enable auto-neg/parallel detection go to forced settings attempt auto- negotiation listen for 10t link pulses listen for 100tx idle symbols link set? no yes power-up, reset, link failure disable auto-negotiation 0.12 = 0 0.12 = 1
page 155 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.7 serial mii operation the serial mii operates at 125 mhz using a global reference clock and frame synchronization signal (refclk and sync). ea ch port has an individual two-line data interface (txdata n and rxdata n ). all signals are synchronous to refclk. table 43 summarizes the smii signals. data is exchanged in 10-bit serial words. each word contains one data byte (two nibbles of 4b coded data) and two status bits. when the port is operating at 100 mbps, each word contains a new data byte. when the port is operating at 10 mbps, each data byte is repeated 10 times. table 43 smii signal summary signal to from purpose txdata phy mac transmit data & control sync phy mac synchronization rxdata mac phy receive data & control refclk mac & phy system synchronization 1. refer to table 7, smii specific signal descriptions ? pqfp , on page 46 for detailed signal descriptions. figure 15 typical smii interface typical smii interface in a 16-port system 8-port media access controller ( mac) sync0 magnetics/fiber transceiver mdio0 mdc0 mdint0 8-port media access controller (mac) magnetics/fiber transceiver sync0 mdio0 mdc0 mdint0 system clk 125 mhz sourced externally or from switch asic refclk0 lxt9785/9785e 8-port phy lxt9785/9785e 8-port phy refclk1 refclk0 refclk1 8 txdata n rxdata n 8 8 8 rxdata n section section txdata n
page 156 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.7 serial mii operation figure 16 typical smii quad sectionalization magnetics/fiber transceiver sync0 lxt9785/9785e 8-port phy 12-port media access controller ( mac) sync1 4 magnetics/fiber transceiver magnetics/fiber transceiver 8 sync0 8 125 mhz sourced externally or from switch asic 4 lxt9785/9785e 8-port phy 12-port media access controller ( mac) sync0 4 4 mdc0 mdc0 mdio0 mdio0 mdio0 mdc0 8 8 4-port (sec) 4-port (sec) mdio1 mdc1 refclk0 refclk1 refclk0 refclk1 refclk0 refclk1 txdata n rxdata n txdata n rxdata n txdata n rxdata n mdint1 mdint0 mdint0 mdint0 txdata n rxdata n section section section vcc lxt9785/9785e typical smii interface in a 24-port system
page 157 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.7 serial mii operation 4.7.1 smii reference clock the refclk operates at 125 mhz. the tran smit and receive data and control streams must always be synchronized to the refclk by the mac and phy. the lxt9785/lxt9785e samples these signals on the rising edge of the refclk. 4.7.2 txsync pulse (smii/ss-smii) the txsync pulse delimits segment boundari es and synchronizes with refclk. the mac must continuously generate a txsync pulse once every 10 refclk cycles. the txsync pulse signals the start of each new segment (see figure 21 on page 161 ). 4.7.3 transmit data stream transmit data and control information are signaled in ten- bit segments. in 100 mbps mode, each segment contains a new byte of data. in 10 mbps mode, the mac must repeat a 10m serial word ten times on txdata. the lxt9785/lxt9785e may sample that serial word at any point. the txsync pulse signals the start of a new segment as shown in figure 18 . 4.7.3.1 transmit enable the mac must assert the txen bit in ea ch segment of txdata, and de-assert txen n after the last segment of the packet. 4.7.3.2 transmit error when the mac asserts the txer bit in 10 0base-x mode, the lxt978 5/lxt9785e drives ?h? symbols onto the network interface. txer does not have any function in 10m operation. figure 17 100 mbps serial mii data flow 4b/5b s0 s1 s2 s3 s4 d0 d1 d2 d3 d4 d5 d6 d7 s0 s1 serial data stream strip tx_en & tx_er status bits insert crs & rx_dv status bits d0 d1 d2 d3 d0 d1 d2 d3 2 nibbles tx/rx data s0 s1 s2 s3 s4 2 symbols tx/rx data to/from mac to/from pmd sublayer figure 18 serial mii transmit synchronization txd0 txd1 txd2 txd3 txd4 txd5 txd6 txd7 clock txsync tx txen txer txer
page 158 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.7 serial mii operation 4.7.4 receive data stream receive data and control information are signalled in ten-bit segments. in 100 mbps mode, each segment contains a new byte of data. in 10 mbps mode, each segment is repeated ten times (except for the crs bi t), and the mac can sample any of the ten segments. 4.7.4.1 carrier sense the crs bit (slot 0) is generated when a packet is received from the network interface. the crs bit is set in real time, even in 10 mbps mode (all other bits are repeated in 10 sequential segments). 4.7.4.2 receive data valid the lxt9785/lxt9785e asserts the rx_dv bit (slot 1) when it receives a valid packet. the assertion timing changes depending on line operating speed: ? for 100base-tx and 100base-fx links, the rx_dv bit is asserted from the first nibble of preamble to the last nibble of the data packet. ? for 10base-t links, the entire preamble is trun cated. the rx_dv bit is asserted with the first nibble of the start-of-frame delimit er (sfd) ?5d? and remains asserted until the end of the packet. 4.7.4.3 receive error when the lxt9785/lxt9785e receives an invalid symbol from the network in 100base-tx mode, it drives ?0101? on the associated rxdata signals. 4.7.4.4 receive status encoding the lxt9785/lxt9785e encodes status information onto the rxdata line during ipg as seen in table 44 on page 159 . status bit rxdata<5> indicates the validity of the upper nibble (rxdata<7:4> of the last byte of the previous frame). rxdata and rx_dv are passed through the internal elasticity fifo to sm ooth any clock rate differences between the recovered clock and the 125 mhz reference clock. 4.7.5 collision the smii interface does not provide a collision output and relies on the mac to interpret col conditions using crs and txen. crs is unaffected by the transmit path. figure 19 serial mii receive synchronization cr s rx_dv rxd0 rxd1 rxd2 rxd3 rxd4 rxd5 rxd6 rxd7 crs clock rxsync rx rxer speed duplex link j abber valid fce rxd7
page 159 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.7 serial mii operation 4.7.6 source synchronous-serial media independent interface some system designs require the phy to be plac ed between 3 to 12 in ches away from the mac. a new source synchronous-serial medi a independent interface (ss-smii) definition has been added because of this requirement. to provide a source synchronous interface between the phy and mac, the phy must driv e the rxclk and the rxsync signals to the mac. also, the mac must drive the txclk and the txsync signal to the phy. the refclk is also needed to synchronize the data to the phy?s core clock domain. txdata is clocked in using txclk and then synchroni zed to refclk and transmitted to the twisted-pair. the rxdata is synchronized to the rxclk. see figure 23 on page 162 . table 44 rx status encoding bit definitions signal definition crs carrier sense - identical to mii, except that it is not an asynchronous signal. rxdv receive data valid - identical to mii. when rx_dv = 0, status information is transmitted to the mac. when rx_dv = 1, received data is transmitted to the mac. 0 = status byte 1 = valid data byte rxer (rxdata0) inter-frame status bit rxdata0 indicates whether or not the phy detected an error somewhere in the previous frame. 0 = no error 1 = error speed (rxdata1) inter-frame status bit rxdata1 indicates port operating speed. 0 = 10 mbps 1 = 100 mbps duplex (rxdata2) inter-frame status bit rxdata2 indicates port duplex condition. 0 = half-duplex 1 = full-duplex link (rxdata3) inter-frame status bit rxdata3 indicates port link status. 0 = down 1 = up jabber (rxdata4) inter-frame status bit rxdata4 indicates port jabber status. 0 = ok 1 = error valid (rxdata5) inter-frame status bit rxdata5 conveys the validity of the upper nibble of the last byte of the previous frame 0 = invalid 1 = valid false carrier (rxdata6) inter-frame status bit rxdata6 indicates whether or not the phy has detected a false carrier event. 0 = no fc detected 1 = fc detected rxdata7 this bit is set to 1. 1 = always 1. both rxdata0 and rxdata5 bits are valid in the segm ent immediately following a frame, and remain valid until the first data segment of the next frame begins. table 45 ss-smii signal to from purpose txdata phy mac transmit data & control txclk phy mac transmit clock txsync phy mac synchronization pulses rxdata mac phy receive data & control rxclk mac phy receive clock rxsync mac phy receive synchronization refclk mac system synchronization
page 160 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.7 serial mii operation figure 20 typical ss-smii interface typical ss-smii interface in a 16-port system 8-port media access controller ( mac) txsync0 magnetics/fiber transceiver txclk0 rxsync1 rxclk1 mdio0 mdc0 mdint0 8-port media access controller (mac) magnetics/fiber transceiver txsync0 rxsync1 mdio0 mdc0 mdint0 sys_clk txclk0 rxclk1 refclk0,1 lxt9785/9785e 8-port phy lxt9785/9785e 8-port phy refclk0,1 125 mhz sourced externally or from switch asic rxdata n 8 8 8 8 n txdata section section txdata n rxdata n
page 161 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.7 serial mii operation figure 21 typical ss-smii quad sectionalization magnetics/fiber transceiver txsync0 rxsync1 txclk0 rxclk1 lxt9785/9785e 8-port phy 12-port media access controller ( mac) txsync1 4 magnetics/fiber transceiver txdata n txclk1 rxsync1 rxclk1 rxdata n magnetics/fiber transceiver 8 txsync0 rxsync1 8 125 mhz sourced externally or from switch asic 4 txclk0 rxclk1 lxt9785/9785e 8-port phy 12-port media access controller ( mac) txsync0 4 txdata n txclk0 rxsync0 rxclk0 rxdata n 4 mdc0 mdc0 mdio0 mdio0 mdio0 mdc0 8 8 4-port (sec) 4-port (sec) mdio1 mdc1 refclk0 refclk1 refclk0 refclk1 refclk0 refclk1 mdint0 mdint0 mdint1 txdata n rxdata n rxdata n txdata n mdint0 section section section vcc typical ss-smii interface in a 24-port system lxt9785/9785e
page 162 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.8 rmii operation 4.8 rmii operation the lxt9785/lxt9785e provides an independent reduced mii port for each network port. each rmii uses four signals to pass received data to the mac: rxdata n <1:0>, rxer n , and crs_dv n (where n reflects the port number). three signals are used to transmit data from the mac: txdata n _<1:0> and txen n . both receive and transmit signals are clocked by refclk. data transmission acro ss the rmii is implemented in di-bit pairs which equal a 4-bit wide nibble. note: the bga15 package does not support the rmii interface. 4.8.1 rmii reference clock the lxt9785/lxt9785e requires a 50 mhz reference clock (refclk). the device samples the rmii input signals on the rising edge of refclk and drives rmii output signals on th e falling edge. figure 22 ss-smii transmit timing figure 23 ss-smii receive timing txclk txsync txdata all signals are synchronous to the clock txer txen txd2 txd0 txd1 txd3 txd4 txd5 txd7 txd6 txclk txsync txdata txer dplx frcerr speed jabr link txen txer txer rxclk rxsync rxdata all signals are synchronous to the clock crs rxdv rxd2 rxd0 rxd1 rxd3 rxd4 rxd5 rxd7 rxd6 rxclk rxsync rxdata crs dplx rxer speed upnib jabr flscar link rxdv crs crs
page 163 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.8 rmii operation 4.8.2 transmit enable txen n must be asserted and de-asserted synchronously with refclk. the mac must assert txen n at the same time as the fi rst nibble of preamble. txen n must be de-asserted after the last bit of the packet. 4.8.3 carrier sense & data valid the lxt9785/lxt9785e asserts crs_dv n when it detects activity on the line. however, rxdata n outputs zeros until the received data is decoded and available for transfer to the controller. 4.8.4 receive error whenever the lxt9785/lxt9785e receives an error symbol from the network, it asserts rxer n . when it detects a bad start-of-stream delim iter (ssd) it drives a ?10? jam pattern on the rxdata pins to indi cate a false carrier event. 4.8.5 out-of-band signaling the lxt9785/lxt9785e has the capability of encoding status information in the rxdata stream during ipg. see section 4.12, monitoring operations , on page 177 . for details. 4b/5b coding operations the 100base-x protocol specifies the use of a 5-bit symbol code on the network media. however, data is normally transmitted across the rm ii interface in 2-bit nibblets or ?di-bits?. the lxt9785/lxt9785e incorporates a parallel/ serial converter that translates between di-bit pairs and 4-bit nibbles, and a 4b/5b enc oder/decoder circuit t hat translates between 4-bit nibbles and 5-bit symbol s for the 100base-x connection. figure 24 shows the data conversion flow from nibbles to symbols. table 46 on page 167 shows 4b/5b symbol coding (not all symbols are valid). figure 24 rmii data flow d2 d3 d0 d1 parallel to serial serial to parallel d0 d1 d2 d3 4b/5b s0 s1 s2 s3 s4 mlt3 0 +1 -1 00 transition = 1. no transition = 0. all transitions must follow pattern: 0, +1, 0, -1, 0, +1... scramble de- scramble reduced mii mode data flow di-bit pairs 4-bit nibbles 5-bit symbols
page 164 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.8 rmii operation figure 25 typical rmii interface 50 mhz sourced externally or from switch asic magnetics/fiber transceiver typical rmii interface in a 16-port system 8-port media access controller ( mac) magnetics/fiber transceiver 8 8 lxt9785/9785e 8-port phy 8-port media access controller ( mac) mdc0 mdio0 mdio0 mdc0 8 8 8 8 8 8 8 8 refclk0 8 8 8 8 txd0 n txd1 n txen n rxd0 n rxd1 n crs_dv n rxer n lxt9785/9785e 8-port phy mdint0 mdint0 txd0 n txd1 n txen n rxd0 n rxd1 n crs_dv n rxer n refclk1 refclk0 refclk1 section section
page 165 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.8 rmii operation figure 26 typical rmii quad sectionalization magnetics/fiber transceiver 12-port media access controller ( mac) txd1 n 4 magnetics/fiber transceiver txd0 n magnetics/fiber transceiver 8 8 50 mhz sourced externally or from switch asic 4 lxt9785/9785e 8-port phy 12-port media access controller ( mac) 4 4 mdc0 mdc0 mdio0 mdio0 mdio0 mdc0 8 8 4-port (sec) 4-port (sec) mdio1 mdc1 refclk0 8 8 8 8 8 8 refclk1 4 4 4 4 4 4 4 4 4 4 refclk1 8 8 8 8 refclk0 txd0 n txd1 n txen n rxd0 n rxd1 n crs_dv n rxer n lxt9785/9785e 8-port phy mdint0 txd0 n txd1 n txen n rxd0 n rxd1 n crs_dv n rxer n mdint0 txen n rxd0 n rxd1 n rxer n mdint1 crs_dv n mdint0 txd0 n txd1 n txen n rxd0 n rxd1 n crs_dv n rxer n section section section vcc refclk1 refclk0 typical rmii interface in a 24-port system lxt9785/9785e
page 166 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.9 100 mbps operation 4.9 100 mbps operation 4.9.1 100base-x network operations during 100base-x operation, the lxt9785/lxt9785e tran smits and receives 5-bit symbols across the network link. figure 27 shows the structure of a standard frame packet. when the mac is not actively transmitting data, the lxt9785/lxt9785e sends out idle symbols on the line. in 100base-tx mode, the device scrambles the data and transmits it to the network using mlt-3 line code. the mlt-3 signals received from the network are de-scrambled and decoded, and sent across the rmii to the mac. in 100base-fx mode, the lxt9785/lxt9785e transmits and receives nrzi signals across the lvpecl inte rface. an external 100base-fx tr ansceiver module is required to complete the fiber connection. as shown in figure 27 , the mac starts each transmission with a preamble pattern. as soon as the lxt9785/lxt9785e detects the start of preamble, it transmits a j/k start-of-stream delimiter (ssd) symbol to the network. it th en encodes and transmits the rest of the packet, including the balance of the preamble, the start-of-frame delimiter (sfd), packet data, and crc. once the packet ends, the lxt9785/lxt9785e transmits the t/r end-of-stream delimiter (esd) symbol and then returns to transmitting idle symbols. 4.9.2 100base-x protocol sublayer operations in a 7-layer communications model, the lxt9785/lxt9785e is a physical layer 1 (phy) device. the lxt9785/lxt9785e implements the ph ysical coding sublayer (pcs), physical medium attachment (pma), and physical m edium dependent (pmd) sublayers of the reference model defined by the ieee 802.3u spec ification. the fo llowing paragraphs discuss the lxt9785/lxt9785e operation from the reference model point of view. 4.9.2.1 pcs sublayer the physical coding sublayer (pcs) provides the rmii interface, as well as the 4b/5b encoding/decoding function. for 100base-tx and 100base-fx operation, t he pcs layer provides idle symbols to the pmd-layer line dr iver as long as txen is de-asserted. for 10t operation, the pcs layer merely provides a bus interface and serialization/de-serializatio n function. 10t operation does not use the 4b/5b encoder. figure 27 100base-x frame format p0 p1 p6 sfd 64-bit preamble (8 octets) start-of-frame delimiter (sfd) da da sa sa destination and source address (6 octets each) l1 l2 packet length (2 octets) d0 d1 dn data field (pad to minimum packet size) frame check field (4 octets) crc i0 interframe gap / idle code (> 12 octets) replaced by /t/r/ code-groups end-of-stream delimiter (esd) ifg replaced by /j/k/ code-groups start-of-stream delimiter (ssd)
page 167 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.9 100 mbps operation 4.9.2.1.1 preamble handling when the mac asserts txen, the pcs substitu tes a /j/k/ symbol pair, also known as the start-of-stream delimiter (ssd), for the first two nibbles received across the rmii. the pcs layer continues to encode the remaining rmii data until txen is de-asserted (see table 46 on page 167 ). it then returns to supplying idle symbols to the line driver. the pcs layer performs the oppo site function in the receive direction by substituting two preamble nibbles for the ssd. 4.9.3 pma sublayer the 100base-x pma protocol uses the 4b/5b data encoding scheme to encode/decode the data streams. the coding scheme is shown in ta b l e 4 6 . figure 28 protocol sublayers encoder/decoder serializer/de-serializer link/carrier detect pcs sublayer pma sublayer mii interface lvpecl interface fiber transceiver lxt9785 100base-tx 100base-fx scrambler/ de-scrambler pmd sublayer table 46 4b/5b coding (sheet 1 of 2) code type 4b code 3 2 1 0 name 5b code 4 3 2 1 0 interpretation 0 0 0 0 0 1 1 1 1 0 data 0 0 0 0 1 1 0 1 0 0 1 data 1 0 0 1 0 2 1 0 1 0 0 data 2 0 0 1 1 3 1 0 1 0 1 data 3 0 1 0 0 4 0 1 0 1 0 data 4 0 1 0 1 5 0 1 0 1 1 data 5 0 1 1 0 6 0 1 1 1 0 data 6 1. the /i/ (idle) code group is s ent continuously between frames. 2. the /j/ and /k/ (ssd) code groups are al ways sent in pairs; /k/ follows /j/. 3. the /t/ and /r/ (esd) code groups are al ways sent in pairs; /r/ follows /t/. 4. an /h/ (error) code group is us ed to signal an error condition.
page 168 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.9 100 mbps operation 4.9.3.1 link in 100 mbps mode, the lxt9785/lxt9785e es tablishes a link whenever the descrambler becomes locked and remains locked for approximately 50 ms. whenever the descrambler loses lock (<16 consecutive idle symbols du ring a 2 ms window), the link is taken down. this provides a robust link, filtering out any small noise hits that may otherwise disrupt the link. furthermore, 100 mb ps idle patterns will not bring up a 10 mbps link. data 0 1 1 1 7 0 1 1 1 1 data 7 1 0 0 0 8 1 0 0 1 0 data 8 1 0 0 1 9 1 0 0 1 1 data 9 1 0 1 0 a 1 0 1 1 0 data a 1 0 1 1 b 1 0 1 1 1 data b 1 1 0 0 c 1 1 0 1 0 data c 1 1 0 1 d 1 1 0 1 1 data d 1 1 1 0 e 1 1 1 0 0 data e 1 1 1 1 f 1 1 1 0 1 data f idle undefined i 1 1 1 1 11 idle. used as inter stream fill code. 0 1 0 1 j 2 1 1 0 0 0 start-of-stream delimiter (ssd), part 1 of 2. control 0 1 0 1 k 2 1 0 0 0 1 start-of-stream delimiter (ssd), part 2 of 2. undefined t 3 0 1 1 0 1 end-of-stream delimiter (esd), part 1 of 2. undefined r 3 0 0 1 1 1 end-of-stream delimiter (esd), part 2 of 2. undefined h 4 0 0 1 0 0 transmit error. used to force signaling errors. undefined invalid 0 0 0 0 0 invalid undefined invalid 0 0 0 0 1 invalid undefined invalid 0 0 0 1 0 invalid invalid undefined invalid 0 0 0 1 1 invalid undefined invalid 0 0 1 0 1 invalid undefined invalid 0 0 1 1 0 invalid undefined invalid 0 1 0 0 0 invalid undefined invalid 0 1 1 0 0 invalid undefined invalid 1 0 0 0 0 invalid undefined invalid 1 1 0 0 1 invalid table 46 4b/5b coding (sheet 2 of 2) code type 4b code 3 2 1 0 name 5b code 4 3 2 1 0 interpretation 1. the /i/ (idle) code group is s ent continuously between frames. 2. the /j/ and /k/ (ssd) code groups are al ways sent in pairs; /k/ follows /j/. 3. the /t/ and /r/ (esd) code groups are al ways sent in pairs; /r/ follows /t/. 4. an /h/ (error) code group is us ed to signal an error condition.
page 169 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.9 100 mbps operation the lxt9785/lxt9785e reports link failure via the register status bits (1.2, 17.10, and 19.4) and interrupt functions. if auto-negotiate is enabled, link failure causes the device to re-negotiate. 4.9.3.2 link failure override the lxt9785/lxt9785e normally transmits 100 mbps data packets or idle symbols only if it detects the link is up, and transmits only flp burs ts if the link is not up. setting bit 16.14 = 1 overrides this function, allowing the lxt978 5/lxt9785e to transmit data packets even when the link is down. this feature is provided as a diagnostic tool. note: auto-negotiation must be disabled to transmit data packets in the absence of link. if auto-negotiation is enabled, the lxt9785/lxt97 85e automatically begins transmitting flp bursts if the link goes down. 4.9.3.3 carrier sense/data valid (rmii) the lxt9785/lxt9785e asserts crs_dv whenever the respective port receiver is in a non-idle state (as defined by the rmii specification revision 1.2), including false carrier events. assertion of crs_dv is asynchronous with respect to refclk. in the event that signal decoding is not complete when crs_d v is asserted, the lxt9785/lxt9785e outputs 00 on the rxdata1:0 lines until the decoded data are available. when the line returns to an idle state, crs_ dv is de-asserted synchronously with respect to refclk. if the fifo still contains data to be passed to the mac via the rmii when crs is de-asserted, crs_dv toggles on nibble boundaries until the fifo is empty. for 100base-x signals, crs_dv togg les at 25 mhz. for 10base- t signals, crs_dv toggles at 2.5 mhz. 4.9.3.4 carrier sense (smii) for 100base-tx and 100base-fx links, a start-of -stream delimiter (ssd) or /j/k/ symbol pair causes assertion of carrier sense (crs). an end-of-stream delimiter (esd), or /t/r/ symbol pair causes de-assertion of crs. the pma layer also de-asserts crs if idle symbols are received without /t/r/. in this event, receive error is indicated during the ipg until the next packet is received. for 10t links, crs assertion is based on rece ipt of valid preamble, and de-assertion on receipt of an end-of-frame (eof) marker. 4.9.3.5 receive data valid (smii) the lxt9785/lxt9785e asserts the rx_dv bit when it receives a valid packet. however, rxdata outputs zeros until the received data are decoded and available for transfer to the controller. 4.9.3.6 twisted-pair pmd sublayer the twisted-pair physical medium dependent (pmd) layer provides the signal scrambling and descrambling, line coding and decoding (mlt-3 for 10 0base-tx, manchester for 10t), as well as receiving, polari ty correction, and baseline wander correction functions. 4.9.3.6.1 scrambler/descrambler (100base-tx only) the purpose of the scrambler is to spread the signal power spectrum and further reduce emi using an 11-bit, non-data-dependent polynomial. the receiver automatically decodes the polynomial whenever idle symbols are received.
page 170 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.9 100 mbps operation the scrambler/descrambler can be bypassed by setting register bit 16.12 = 1. the scrambler is automatically bypassed when the fi ber port is enabled. scrambler bypass is provided for diagnostic and test support. 4.9.3.6.2 baseline wander correction the lxt9785/lxt9785e provides a baseline wander correction function which makes the device robust under all network operating conditions. the mlt3 coding scheme used in 100base-tx is, by definition, ?unbalanced?. this means that the dc average value of the signal voltage can ?wander? significantly over sh ort time intervals (tenths of seconds). this wander may cause receiver errors, particularly in less robust designs, at long line lengths (100 meters). the exact characteristics of the wander are completely data dependent. the lxt9785/lxt9785e baseline wander corr ection characteristics allow the device to recover error-free data while receiving worst- case ?killer? packets over all cable lengths. 4.9.3.6.3 polarity correction the lxt9785/lxt9785e automatically detects and corrects for the condition where the receive signal (tpfip/n) is inverted. reversed polarity is detected if eight inverted link pulses or four inverted end-of-frame (eof) markers are received consecutively. if link pulses or data are not received by the maximu m receive time-out period, the polarity state is reset to a non-inverted state. before the polarity switch occurs, every frame is inverted and causes rxer to assert. the specific number of rxer events observed depends on how many link pulses occur between packets. 4.9.3.7 fiber pmd sublayer the lxt9785/lxt9785e provides an lvpecl inte rface for connection to an external 3.3 v or 5 v fiber transceiver. (the external transc eiver provides the pmd function for the optical medium.) the lxt9785/lxt9785e uses a 125 mb aud nrzi format for the fiber interface, and does not support 10base-fl applications. note: the bga15 package does not support fiber interface. 4.9.3.7.1 far end fault indications the lxt9785/lxt9785e signal detect pins in dependently detect signal faults from the local fiber transceivers via the sd pins. the device also uses register bit 1.4 to report remote fault indications received from its link partner. the device ?ors? both fault conditions to set bit 1.4. register bi t 1.4 is set once and clears when read. the far-end fault detection proce ss in fiber operation requires id les to establish link. link will not establish if a far-end fault pattern is the initial signal detected. either fault condition causes the lxt9785/lxt9785e to drop the link unless forced link pass is selected (16.14 = 1). link down conditio n is then reported via interrupts and status bits. in response to locally detected signal faults (sd activated by the local fiber transceiver), the affected port can transmit the far end fault co de if fault code transmission is enabled by register bit 16.2. ? when register bit 16.2 = 1, transmission of the far end fault code is enabled. the lxt9785/lxt9785e transmits far end fault code if fault conditions are detected by the signal detect pins. ? when register bit 16.2 = 0, the lxt9785/lxt9785e does not transmit far end fault code. it continues to transmit idle code and may or may not drop link depending on the setting for register bit 16.14.
page 171 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.10 10 mbps operation the occurrence of a far end fault causes all tr ansmission of data from the reconciliation sublayer to stop and the far end fault code to begin. the far end fault code consists of 84 ones?s followed by a single ?0? and is repeated un til the far end fault condition is removed. 4.10 10 mbps operation the lxt9785/lxt9785e operates as a standard 10base-t transceiver and supports all the standard 10 mbps f unctions. during 10base- t (10t) operation, the lxt9785/lxt9785e transmits and receives manchester-encoded data across the network link. when the mac is not actively transmitting data, the device sends out link pulses on the line. in 10t mode, the polynomial scrambler/descrambler is inactive. manchester-encoded signals received from the network are decod ed by the lxt9785/lxt9785e and sent across the mii to the mac. note: the lxt9785/lxt9785e does not support fiber connections at 10 mbps. 4.10.1 preamble handling the lxt9785/lxt9785e offers two options for preamble handling, which are selected by register bit 16.5. in 10base-t mode, when regi ster bit 16.5 = 0, the device strips the preamble off the received packets. in rmii and the smii modes, the crs signal is asserted based upon receive activity. in the smii modes, out-of-band (oob) signaling is present until the sfd is output. the dv signal is in itially asserted in the frame that the sfd is output. in rmii mode, zeros are output after re ceive activity is dete cted until the sfd is output. the packet is output following the sfd. when register bit 16.5 = 1 in 10base-t mode, the lxt9785/lx t9785e passes the preamble through the rmii and the smii interf aces. in rmii and the smii modes, the crs signal is asserted based upon receive activi ty. in the smii modes, oob signaling is continued until preamble is available from th e receive fifo. after the preamble, the sfd is output with the initial assertion of the dv signal. the rmii interface outputs zeros after receive activity is detected unt il preamble is available from the fifo. the number of zero nibbles output before preamble is based upon the fifo initial fill settings (register bits 18.15:14). the preamble is followed by the sfd and the packet body. register bit 16.5 has no effect in 100 mbps operation. 4.10.2 dribble bits the lxt9785/lxt9785e device handles dribble bits in all modes. if one through four dribble bits are received, the nibble is passed across the rmii. if five through seven dribble bits are received, the second nibble is not sent onto the rmii bus. 4.10.3 link test the lxt9785/lxt9785e always transmits link pulses in 10t mode. when enabled, the link test function monitors the connection for lin k pulses. once link pulses are detected, data transmission is enabled and remains enabled as long as either the link pulses or data transmission continue. if link pulses stop, the data transmission is disabled. if the link test function is disabled, the lxt9785/lxt9785e transmits to the connection regardless of detected link pulses. the link test function is disabled by setting register bit 16.14 = 1.
page 172 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.11 dte discovery process 4.10.3.1 link failure link failure occurs if link test is enabled and link pulses or packets stop being received. if this condition occurs, the lxt9785/lxt9785e returns to the auto-negotiation phase if auto-negotiation is enabled. 4.10.4 jabber if a transmission exceeds the jabber timer, the lxt9785/lxt9785e disables the transmit and loopback functi ons and the collision status bit (registe r bit 17.11) is set regardless of duplex. the jabber timer, acco rding to the ieee standard, mu st be between 20 ms to 150 ms. the rmii does not include a jabber pin, but the mac may read register 1 to determine jabber status. the lxt9785/lxt9785e automatica lly exits jabber mode after the unjab time expires. this function is disabled by setting register bit 16.10 = 1. 4.11 dte discovery process the dte discovery process is port dependent and must be enabled through software. the process is implemented as a next page op tion to the auto-negotiation flow. when the process is enabled, manual control of auto-negotiation next pages is not allowed. this feature applies to the lxt9785e transceiver only. the process depends upon an ip phone, or any other dte capable of being powered remotely, having a specific filter that pa sses nlps and flps. this filter should be non-polarized to insure that the latest stat us of auto-mdix operation does not effect operation. this filter attenuates 100 mbps mlt3 signals and 10 mbps manchester-encoded signals, and must be bypassed when power is applied to the ip phone. figure 29 shows a typical ip telephone system connection. 4.11.1 definitions the terms in table 47 are used throughout the dte discovery sections: figure 29 typical ip telephone system connection power outlet computer 123 456 789 * 8# ip telephone ups/ generator power cable sd power fault 123 456 789101112 link mode mode link 13 14 1 5 1 6 17 18 19 2 1 20 2 2 23 24 mode select fdx act 1x 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x 12x 13x 14x 15x 16x 17x 18x 19x 20x 21x 22x 23x 24x 10/100base-t ports 100 reset clear module status se lf te st console pr ocurve switch 2 424m hp j4122b voip-enabled switch power outlet data only over category 5 cable power cable power and data over category 5 cable
page 173 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.11 dte discovery process 4.11.2 interaction between processor, mac, and phy the state machines that control the mechanics of the discovery proce ss reside within the lxt9785e device. however, control of the powe r supply and overall system control reside in the system processor. the processor co mmunicates with the power supply unit (psu) and switches it on and off dependant on the data that is supplied by the phy. the phy register data is read by the mac using the mdio interface. the required control bits are contained in the phy device regi ster map and are discussed in detail in the section labeled section 4.11.3, management interface and control , on page 174 . note: the details of the processor/mac interf ace and the processor/psu interface are implementation specific and therefore are out of the scope of this specification. the following is an overview of the system co ntrol for a successful remote-power dte discovery: 1. the discovery process is enabled by th e dte discovery process enable (dis_en) register bit 27.6 and the auto-negotiation en able register bit 0.12 . writing register bit 27.6 immediately affects the auto-negotiation base page. if already enabled, auto-negotiation should be restarted after this bit is written to ensure proper operation. register bit 4.15 is used for manual contro l of auto-negotiation next pages and should be left in the default state (cleared). 2. the lxt9785e phy then tests to see if a remote-power dte is present as the link partner. if a remote-power dte is found, the power enable (power_en) register bit 27.4 is set. the processor polls this signal via the mac. 3. upon detecting a remote-power dte, the processor instructs the power supply to switch on. once power has been applied to the dte, normal negotiation takes place. the processor must enable the required negotiation process by restarting auto-negotiation, or by setting forced speed mode after power has been applied. the processor must poll the link-up register bit 1.2 for the corresponding lxt9785e port, or the link status change interrupt, to ensure that the link has been established. 4. a time-out must be connected with this featur e so that if link is not established within a pre-determined time period (system dependant), the processor instructs the power supply to switch off. if link is not established prior to the expiration of the ?link fail inhibit timer?, the lxt9785e restarts negotiation with dte detection if auto-negotiation mode was used to establish link with the phone, and the dte process is still enabled. the lxt9785e restarts negotiation without dte detec tion if either forced speed mode is used to establish link with the phone, or the dte process is disabled. table 47 dte terms term definition negotiation process: this includes auto-negot iation and parallel detection processes system: the switch system using the lxt9785e for dte discovery link partner: a device connected to t he lxt9785e through twisted pair cables dte: data terminal equipment; any end-of-link partner standard link partner: a link partner that is not requi ring power over a category 5 cable; typically a pc remote-power dte: data terminal equipment requiring power ov er a category 5 cable; typically an ip telephone discovery: the process of identifyi ng the type of link partner present
page 174 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.11 dte discovery process 5. if power is applied and link is established , the system must still poll the link status register bit 1.2 for the corres ponding lxt9785e port or the link status change interrupt. this is required since link status is the only way to know when the remote-power dte is removed or unplugged. on seeing the li nk_down condition, the processor instructs the power supply to switch off, and the dt e discovery begins again or is disabled. 4.11.3 management interface and control the management and control of the dte discovery process is via the mdio port. each port on the lxt9785e is capable of running t he discovery process, thus each port is independently controlled. this is achieved by each port having a dedicated set of control and status bits. these bits are found in register 27 as follows: dte discovery process enable - register bit 27.6 (dis_en) r/w default value = 0: disabled. register bit 27.6 controls the operation of the process. the discovery process is disabled when register bit 27.6 = 0, and enabled when register bit 27.6 = 1. the mac controller sets register bit 27.6 to a 1 when a port search for a dte requiring power is desired. once set, register bit 27.6 remains = 1 until the mac cl ears it, either by directly clearing it or by resetting the phy. this allows the discovery proc ess to continue to function if unsuccessful in detecting a dte, without being continually re -enabled by the mac. if register bit 27.6 is set after link is established, no action is taken until after the link goes down. power enable - register bit 27.4 (power_en) r default value = 0: no remote-power dte found. register bit 27.4 contains the result of the di scovery process. when register bit 27.4 = 0, the discovery process has not found remote-pow er dte, and when register bit 27.4 = 1, the discovery process has potentially found a dte requiring power. this indicates power should be applied to the category 5 cable. regi ster bit 27.4 is polled by the mac during the discovery process, and is cleared when th e phy is reset, when auto-negotiation is restarted, or when auto-negotiation is disabl ed. in the event of a discovery process being interrupted due to detection of an already powe red link partner (auto-negotiation completion or parallel detection), register bit 27.4 = 0. standard link partner detected - register bit 27.3 (slp_det) r/w clear on read default value = 0: no link partner found. when register bit 27.3 = 1, a standard link partner has been detected by the lxt9785e (nlps, mlt3 data, flps without next page support, or flps with non-matching next pages). this indicates power should not be applied to the category 5 cable. when register bit 27.3 = 0, other bits are checked to determine overall status of the link partner. register bit 27.3 is cleared on read, or dte discov ery is disabled, link is established, or auto-negotiation is either restarted or disabled. link fail timeout - register bit 27.2 (lfit expired) r/w clear on read default value = 0 (link fail inhibit timer has expired without establishment of link with a standard link partner). valid only when standard link partner detected register bit 27.3 = 1. register bit 27.2 is set if link is not establis hed prior to the link fail inhibit timer expiring. this indicates that the discovery process has restarted and the standard link partner detected register bit may no longer be valid. register bit 27.2 is cleared on read, or dte discovery is disabled, link is established, or au to-negotiation is either restarted or disabled.
page 175 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.11 dte discovery process 4.11.4 dte discovery process flow the following section describes the dte discovery process.see figure 30, cortina systems ? lxt9785e negotiation flow chart , on page 177 for a flow chart of the discovery process.when dte discovery (27.6) and auto-negotiation (0.12) are enabled (auto-negotiation mode is required), the lx t9785e transmits the auto-negotiation base page with the next page ability bit set ( section table 88, auto-negotiation advertisement register (address 4) , on page 218 ). system software polls register 27 to det ermine if or when a remote-power dte is detected. the receiver monitors the line to deter mine if nlps, mlt3 data, or flp bursts are being received. if the receive activity is flp bu rsts, the status of the next page ability bit is checked. if the detected ?link partner? also supports next page, then the lxt9785e transmits out the next page sequence associated with message code #5 (organizationally unique identifier (oui) tag code). the definition for the next pages to be sent out for this message code include some user-defined code values. these values are loaded with randomly created data from an internal lsfr that is free running and seeded with the phy address of the lxt9785e port. the next pages are hard coded in the logic (the lxt9785e ignores any data written into register 7) and are outlined in ta b l e 4 8 . the receiver monitors the next pages to determine t hat the exact next page data (especially the random data) transmitted is received. as soon as the firs t non-matching next page is detected, the dte discovery process is stopped and the base page is used to de termine the capability options. the power-enable register bit 27.4 is set when a remote-power dte is detected as the link partner, and the last next page is repeatedly transmitted until software restarts the required negotiation process (auto-negotiation or forced-speed mode). the software should be written so that the negotiation is not restarted until the dte has been powered up over the category 5 cable. the power-enable register bit 27.4 is cleared upon restarting or disabling aut o-negotiation (selecting forced mode). the system must be able to detect over-current conditions and be capable of disabling power in case the link partner is not a remote-power dte. some ex amples of devices that would mistakenly set power-enable register bit 27.4 are a token-ring balun and a loopback cable. once link partner power has been stabilized and sufficie nt time has passed for the link partner to initialize, the auto-negotiat ion process may be restarted. the negotiation process establishes link if a compatible mode exists between the lxt9785e and the link partner. if a compatible mo de does not exist (not compatible or not established within the link fail inhibit timer period), the lxt9785e either restarts auto-negotiation/dte discovery (discovery is enabled (27.6=1) and auto-negotiation is enabled (0.12 = 1)), or normal negotiati on (discovery is disabled (27.6=0) and auto-negotiation is enabled (0.12 = 1)), or either 10 mbps or 100 mbps forced-mode operation (auto-negotiation is disabled (0.12 = 0)). the software must detect this non-link state and disable power. table 48 next page message #5 code word definitions (sheet 1 of 2) next page encoding d15 d1 4 d1 3 d1 2 d1 1 d1 0 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 oui tagged message 1a10 t 00000000101 user page 1 1a00t 3.1 0 3.1 1 3.1 2 3.1 3 3.1 4 3.1 5 2.0 2.1 2.2 2.3 2.4 1. a is the acknowledge bit; t is the toggle bit; l is the lfsr
page 176 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.11 dte discovery process 4.11.5 dte discovery behavior the device behavior checks the comparison bi t after each next page is successfully auto-negotiated. if the first next page or an y subsequent next page does not match, the dte discovery process transmits one last null page with the next page bit cleared to stop the dte discovery process. if each page is successfully auto-negotiated (it matches the transmitted page), dte discovery completes as previously described. the five next pages consist of a message page and four user pages. user page 2 1 a 0 0 t 2.5 2.6 2.7 2.8 2.9 2.1 0 2.1 1 2.1 2 2.1 3 2.1 4 2.1 5 user page 3 1 a 0 0 t 0 0 l.8 l.7 l.6 l.5 l.4 l.3 l.2 l.1 l.0 user page 4 1a00t l.1 0 l.9 l.8 l.7 l.6 l.5 l.4 l.3 l.2 l.1 l.0 table 48 next page message #5 code word definitions (sheet 2 of 2) next page encoding d15 d1 4 d1 3 d1 2 d1 1 d1 0 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 1. a is the acknowledge bit; t is the toggle bit; l is the lfsr
page 177 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.12 monitoring operations 4.12 monitoring operations 4.12.1 monitoring auto-negotiation auto-negotiation may be monitored as follows: figure 30 cortina systems ? lxt9785e negotiation flow chart default mode transmit based upon hardware configuration flp, nlp or idle symbols power up or link down 1.2 = 0 and dis_en 27.6 = 0 or link down 1.2 = 0 and forced mode software intervention auto-negotiation 0.12 = 1 (if needed) power_en 27.6 = 1 discovery base transmit flps base page (register 4) with next page 4.15 = 1 flp detected next page set? no auto negotiation determine compatibility options flp detected lfit expired 27.2 = 1 dis_en 27.6 = 1 lfit expired 27.2 = 1 dis_en 27.6 = 0 nlps or idle symbols detected yes next page transmission use random data for user defined bits as code next pages received pages = code transmitted? no parallel detection determine compatibility on speed and duplex check advertisement nlps or idle symbols detected yes dte discovered transmit last page continuously power_en 27.4 = 1 software intervention software polled power_en 27.4 = 1 turn on power supply link up compatibility lfit expired 27.2 = 1 dis_en 27.6 = 1 compatibility power on wait state for proper power assertiion set mode restart auto-negotiation or force speed auto- negotiation? yes no assumptions: auto-negotiation/forced speed set by pins advertisement requirements set by pins lfit expired 27.2 = 1 link fail timeout = 1 dis_en not set 27.6 = 0 start link down 1.2 = 0 and dis_en 27.6 = 1 and auto-neg 0.12 = 1 power applied nonmatching dte discovery np received
page 178 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.12 monitoring operations ? bits 1.2 and 17.10 = 1 once the link is established. ? additional bits in register 1 (refer to table 85, status register (address 1) , on page 216 ) and register 17 (refer to table 94, quick status register (address 17, hex 11) , on page 223 ) can be used to determine the link operating conditions and status. 4.12.2 per-port led driver functions the lxt9785/lxt9785e incorporates three direct drive leds per port (led n _1_l, led n _2_l, and led n _3_l). on power up, all the leds lights up for approximately one second after reset de-asserts. each led may be programmed to one of several different display modes using the led configuration register. each per-port led may be programmed (refer to table 97, led configuration register (address 20, hex 14) , on page 226 ) to indicate one of the following conditions: ? operating speed ? transmit activity ? receive activity ? collision condition ? link status ? duplex mode ? isolate condition the leds can also be programmed to display various combined status conditions. for example, setting bits 20.15:12 = 1101 produces the following combination of link and activity indications: ? if link is down, led is off. ? if link is up, led is on. ? if link is up and activity is detected, the le d blinks at the stretch interval selected by bits 20.3:2 and continues to blink as long as activity is present. the led driver pins are open drain circuits (10 ma max current rating). refer to section 5.2.6, led circuit , on page 188 under the application information section for led circuit design details. the led configuration register also provides optional led pulse stretching to 30, 60, or 100 ms . if during this pulse stretch period, the event occurs again, the pulse stretch time is further extended (see table 97, led configuration register (address 20, hex 14) , on page 226 ). when an event such as receiving a packet occu rs, it is edge detected and starts the stretch timer. the led driver remains asserted until the stretch timer expires. if another event occurs before the stretch timer expires, the stretch timer is reset and the stretch time extended. when a long event (such as duplex status) occurs , it is edge detected and starts the stretch timer. when the stretch timer expires, the edge detector is reset so that a long event causes another pulse to be generated from the edge det ector. the edge detector resets the stretch timer, causing the led driver to remain asserted. figure 31 on page 179 shows how the stretch operation functions.
page 179 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.12 monitoring operations 4.12.3 out-of-band signaling the lxt9785/lxt9785e provides an out-of-band signaling option to transfer status information across the rmii receive interface. this feature is enabled when register bit 25.0 = 1 and uses the rxdata(1:0) data bus during the inter-packet gap (ipg) time as shown in figure 32 . out-of-band signaling is disabled when isolate mode is enabled by setting register 0.10. note: the bga15 package does not support out-of-band signaling nor the rmii interface. the two status bits transferred across the rxda ta bus are software selectable via register 25 (see table 99, rmii out-of-band signaling register (address 25, hex 19) , on page 228 ). in normal operation, the lxt9785/lxt9785e st uffs the rxdata bus with zeros during the ipg. a software-selectable bit enables the rmii out-of-band signaling f eature. once this bit is set, the lxt9785/lxt9785e replaces the zeros with selected status bits during the ipg. the lxt9785/lxt9785e includes an ieee 1149.1 boundary scan test port for board level testing. all digital input, output, and input/output pins are accessible. figure 31 led pulse stretching event led note: the direct drive led outputs in this diagram are shown as active low. stretch stretch stretch figure 32 rmii programmable out-of-band signaling re fclk crs_dv rx d(1) rx d(0) data data data data data data data data st a tu s 0 st atu s 0 status 0status 0status 0status 0 st a tu s 1 st atu s 1 status 1status 1status 1status 1 0s st atu s 1 status 0 0s 1. when network activity is detect ed, the lxt9785/lxt9785e asserts crs_dv asynchronously with respect to refclk. 2. after crs_dv is asserted, the lxt9785/lxt9785e zero-stuffs the rxdata bits until the received data has been processed through the fifo. 3. when network activity ceases, the lxt9785/lxt9785e de-asserts crs_dv synchronously with respect to refclk. crs_dv toggles until all data in the fifo has been processed through the rmii. once the fifo is empty, lxt9785/lxt9785e drives the status bits selected by the out-of-band signaling register (refer to table 99, rmii out-of-band signaling register (address 25, hex 19) , on page 228 ) on the
page 180 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.12 monitoring operations 4.12.4 boundary scan interface this interface consists of five pins (tms, td i, tdo, tck and trst_l). it includes a state machine, data register array, and instruction register. the tms and tdi pins are internally pulled up and the tck pin is internally pulled down. tdo does not have an internal pull-up or pull-down. 4.12.5 state machine the tap controller is a 16-state machine driven by the tck and tms pins. upon reset, the test_logic_reset state is ente red. the state machine is al so reset when tms and tdi are high for five tck periods. 4.12.6 instruction register the idcode instruction is alwa ys invoked after the state machine resets. the decode logic ensures the correct data flow to the data regist ers according to the curr ent instruct ion. valid instructions are listed in ta b l e 5 0 . 4.12.7 boundary scan register each boundary scan register ( bsr) cell has two stages. a flip-flop and a latch are used for the serial shift stage and the parallel output stage. there are four modes of operation as listed in table 49 . refer to the identification information section in the cortina systems ? {doc:productname:long} specification update (document number 249357) for the jtag id numbers. table 49 bsr mode of operation mode description 1 capture 2shift 3 update 4 system function table 50 supported jtag instructions name code description data register extest 0000 hex external test bsr idcode fffe hex id code inspection id reg sample fff8 hex sample boundary bsr high z ffcf hex force float bypass clamp ffef hex clamp bsr bypass ffff hex bypass scan bypass
page 181 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.13 cable diagnostics overview 4.13 cable diagnostics overview debugging cable problems increases the overall cost of owning and operating a local area network. cable diagnostic tools were incorp orated into the lxt9785/lxt9785e device to help customers debug network cable problems. the cable diagnostic tools provide the ability to detect severe cable problems, such as open and shor t circuits, and determine the distance to the discontinuity. 4.13.1 features the following are three cases to consider for cable diagnostics: ? distance to a short circuit betwee n wires of a single twisted-pair ? an open circuit ? detection of an improperly terminated cable by the link partner. an improperly terminated cable will not meet i eee 802.3 return loss re quirements. register 29 has been added to control cable testing and report cable testing results. cable diagnostics provides a method to determine the distance to opens and shorts when the link partner is inactive on the twisted-pair under test. the cable tests produce undefined results if the link partner is transmitting si gnals. implementation methods may vary depending upon the system use requirements of cable diagnostics. 4.13.2 operation cable diagnostics utilizes the phy transmit drivers and receivers to test a single twisted-pair. a transmit pulse is driven down the twisted-pair under test and the reflected signal is analyzed. link partners transmitti ng nlp, flp, mlt3, or other tdr pulses may interfere with the ability of th e lxt9785/lxt9785e to properly analyze the reflected cable diagnostic pulse. implementation algorithms must take these potential situations into consideration. 4.13.2.1 short and long cable testing requirements implementing cable diagnostic tests, by enabling short and long cable tests sequentially, allows more accurate measurements to a dete cted fault. both tests are necessary to reach full precision. the short and long cable tests can be run by writing 0x7400h and 0x6c00h to register 29, respectively. see section 4.13.4, basic implementation , on page 182 for implementation details. 4.13.2.2 precision cable diagnostics estimates the distance to a fault up to 150 m. category 5 or better cable produces the most accurate te st results. less than catego ry 5 cable may produce less accurate results on long cable lengths. cable diagnostics returns the distance to the closest fault, if a fault is present. cable diagnostic tests report the distance to a cable fault based on the velocity of signal propagation, which is used to determine the electrical length to t he fault. the electrical length may vary slightly from the physical cable length. the measurement accuracy may vary by +/- 2 m. the following basic equation is used to calculate the distance to a fault: distance_to_fault = (reg29[7:0] - 3.5) / 1.16
page 182 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.13 cable diagnostics overview 4.13.3 implementation considerations before performing cable diagnostics, the twiste d-pair to be tested may be verified to be inactive. all applicable link conf igurations should be attempted. cable diagnostic tests may be started if the attempts indicate no link part ners are active. if link partners are detected, additional tests and decisions as to next step s may need to be implemented in the cable testing algorithm to ensure the most accurate results. cortina recommends that a 100base-tx link be attempted with mdi and mdix enabled sequentially, prior to performing cable diagnostic testing, to determine if a 100base-tx-only link partner is present. if a link partner is in forced 100base-tx operation, transmitting mlt3, the cable diagnostic test result will be undefined due to the interference mlt3 causes in attempting to process the reflected cable diagnostic pulse. auto mdi/mdix on the link part ner should be accounted for in deriving the cable testing algorithm. cortina recommends auto mdi/mdix be disabled when running the cable tests. the transmit and receive twisted-pairs must be test ed one at a time with both short and long cable test suites. the md i/mdix control bits in table 100, trim enable register (address 27, hex 1b) , on page 229 can be used to select the twisted-pair to be tested. this requirement creates a minimum of four test permutations that must be completed to determine if the fault exists , the distance to the fault. if cable diagnostics testing is completed using a powered down lxt9785/lxt9785e device as the link partner, specific results can be expected. the resu lts will indicate an open connection when the pwrdwn hardware configuration pin is used. these power-down methods disable the internal termination resist ors to create a high impedance connection equivalent to an open circuit. if transmit disable (register bit 16.13) or software controlled power-down (register bit 0.11) is used, the powered down device transmit logic will look like an open circuit and the receive circuit will look like a 100 ? terminated connection. the transmit disable bit and the software power-down bit disable the transmit circuit but do not affect the receive circuit. the result of cable diagnostic tests using an ip phone indicate an open or a short fault at a gross approximation of the distance to the ip phone. the termination resistors are not powered and do not create a proper terminat ion. the filter circuit used by some manufacturers adversely af fects the test results. transmission and reception of packets is di sabled when cable diagnostics is enabled. internal loopback must be disabled for cabl e diagnostics to operate properly. internal loopback disables the analog interface. 4.13.4 basic implementation register 29 is used to control and report th e cable diagnostics test results. the function tests one pair of the twisted-pair cable at a time. the basic process flow is described as follows (see table 101, cable diagnostics register (address 29, hex 1d) , on page 231 for register 29 bit definitions): 1. disable auto-negotiation by clearing register bit 0.12, set to mdi by clearing register bits 27.9:8, and ensure internal loopba ck is disabled, register bit 0.14 = 0. 2. write 0x7400h to register 29. setting these bits places the device in short cable cable diagnostics mode and forces link to drop. the device waits a specific amount of time (1.2 s to 1.5 s) to ensure link drops on any connected link partner, and initiates the cable diagnostics test on the selected twisted-pair. 3. poll register bit 29.9. when this bit is set, the test is complete and register bits 29.7:0 contain a value used to determine if a cable fault was found and the distance to that
page 183 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.14 link hold-off overview fault. a value of 0xffh indicates no fault was found. any other value indicates a fault was found, that value should be stored for later use. 4. write 0x6c00h to register 29. setting these bits places the device in long cable cable diagnostics mode. 5. poll register bit 29.9. when se t, record the value of register bits 29.7:0 if a fault is found. 6. if a fault is present, a calculation is used to determine the distance to the fault. insert the smallest value recorded from register bits 29.7:0 in steps 3 and 5 above into the following formula: distance_to_fault = (reg29[7:0] - 3.5) / 1.16 register bit 29.8 is set if the fault is detect ed as a short circuit and is cleared if the fault is detected as an open circuit. register bits 29.12:11 are cleared when read and are cleared during the same read cycle when register bit 29.9 is read, indicating a fault condition exists. 7. normal phy operation can be resumed by writing 0x4000h to register 29 or by software or hardware reset. the test suite can be run again by resuming at step 2 above. 4.14 link hold-off overview the phy link is established as soon as the syst em platform powers-up. in many cases, the system platform is not capable of supporting network operation until configuration firmware is loaded. it is desirable in such cases to prevent the phy from establishing a link until the system platform is fully configured and read y for network operation. link hold-off was incorporated into the lxt9785/lxt9785e device to satisfy these requirements. enabling link hold-off disables the phy link capability until the system platform is fully capable of supporting network operation. the feature is enabled by hardware control at power-up or software control during normal operation. 4.14.1 features link hold-off prevents the lxt9785/lxt9785e from establishing a link by disabling the analog transmit and receive capa bility. the digital capabilitie s of the phy are unaffected including register access and led operation. li nk hold-off can be enabled by an external hardware pin for all ports or by software register access for individual ports. when link hold-off is enabled, the transmitter and receiver on the selected ports are forced into software power-down mode (see section 4.5.3, power-down mode , on page 150 ) to block signal activity from establishing a link and passing packets through the phy. the hardware enabled link hold-off is controlle d by the linkhold pin. internal pull-down resistors hold the pin in the inactive state. connecting a 5k pull-up resistor to the pin enables the feature at power-up reset or exte rnal hardware pin reset. once a phy port is programmed as desired, clearing register bit 0.11 will re-enabl e that port. ea ch port must be individually re-enabled. when a port is software reset, by setting register 0.15, the state of the hardware configuration pin captured by the last hardwa re or power-up reset determines the default register values for the specific function fo r that port. link hold-off, once enabled by hardware configuration, is re-enabled on a port by issuing a software reset for that port. it is not necessary to reset the entire phy or switch system to re-enable link hold-off. link hold-off software control is enabled or disabled on individual ports by respectively setting or clearing register bit 0.11, the power- down bit, during normal operation. it is not required to have previously enabled link hold-off by hardware configuration.
page 184 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 4.14 link hold-off overview link hold-off is disabled if the external pi n mddis is active. the mddis pin disables the mdio interface required to re-enable normal tr ansmit and receive link operation. mddis is intended to disable the mdio management interf ace for unmanaged applications. internal loopback circuitry is unaffected in link hold-off mode. 4.14.2 operation link hold-off is implemented in one of the following two ways: ? using a hardware pin at power-up or hardware reset ? using software control through the mii management (mdc/mdio) interface. link hold-off use by an external hardware pin is as follows: 1. pull the linkhold pin high with a pull-up resistor (approximately 5 k ohms). 2. power up the system or drive the reset pin active. 3. all ports are link disabled. 4. program all ports to the desired configuration. 5. clear register bit 0.11, power-down for each individual port. 6. normal operation resumes on each port after register bit 0.11 is cleared (see table 83 for the recovery time). link hold-off is enabled on a per port basis by software control using the following two methods: method one: this method requires that link hold-off is enabled by the linkhold pin during the last power-up or hardware reset. 1. set register bit 0.15 to reset and re-enable link hold-off for the desired port. 2. program the phy to t he desired configuration. 3. clear register bit 0.11 (power-down) to disable link hold-off. 4. normal operation resumes. method two: this method enables link hold-off regardle ss of the linkhold hardware configuration state. 1. set register bit 0.11(power-down) to enable link hold-off for the desired port. 2. program the phy to t he desired configuration. 3. clear register bit 0.11 (power-down) to disable link hold-off. 4. normal operation resumes. note: high is defined by the io voltage supply level selected (2.5v or 3.3v).
page 185 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 5.0 application information 5.0 application information 5.1 design recommendations the lxt9785/lxt9785e is designed to comply with ieee 802.3 requir ements to provide outstanding receive bit error rate (ber), and long-line-length performance. to achieve maximum performance from the lxt9785/lxt9785e, attention to detail and good design practices are required. refer to the cortina systems ? {doc:productname:long} design and layout guide application note for detailed design and layout information. 5.2 general design guidelines adherence to generally accepted design practice s is essential to minimize noise levels on power and ground planes. up to 50 mv maximum of noise is considered acceptable. high-frequency switching noise can be reduced, and its effects eliminated, by following these simple guidelines throughout the design: ? fill in unused areas of the signal planes with solid copper and attach them with vias to a vcc or ground plane that is not located adjacent to the signal layer. ? use ample bulk and decoupling capacitors throughout the design (a value of 0.01 ? f is recommended for decoupling caps). ? provide ample power and ground planes. ? provide termination on all high-speed switching signals and clock lines. ? provide impedance matching on long traces to prevent reflections. ? route high-speed signals next to a continuous, unbroken ground plane. ? filter and shield dc-dc c onverters, oscillators, etc. ? do not route any digital signals betwe en the lxt9785/lxt9785e and the rj-45 connectors at the edge of the board. ? do not extend any circuit power and ground plan e past the center of the magnetics or to the edge of the board. use this area for chassis ground, or leave it void. 5.2.1 power supply filtering power supply ripple and digital switching no ise on the vcc plane may cause emi problems and degrade line performance. the best approach to this problem is to minimize ground noise as much as possible using good general techniques and by filtering the vcc plane. it is generally difficult to predict in advance the performance of any design, although certain factors greatly increase the risk of having problems: ? poorly-regulated or over-burdened power supplies. ? wide data busses (32-bits+) running at a high clock rate. ? dc-to-dc converters. cortina recommends filtering the power supply to the analog vcc pins of the lxt9785/lxt9785e. this has two benefits. first, it keeps digital switching noise out of the analog circuitry inside the lxt9785/lxt9785e, helping with line performance. second, if the vcc planes are laid out correctly, digital switching noise is kept away from external connectors, reducing emi problems.
page 186 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 5.2 general design guidelines the recommended implementation is to break th e vcc plane into two sections. the digital section supplies power to the vccd and vc cio pins of the lxt9785/lxt9785e. the analog section supplies power to the vcca pins. the break between the two planes should run underneath the device. in designs with more than one the lxt9785/lxt9785e, a single continuous analog vcc plane can be used to supply them all. the digital and analog vcc planes should be joined at one or more points by ferrite beads. the beads should produce at least a 100 ? impedance at 100 mhz. beads should be placed so that current flow is evenly distribu ted. the maximum current rating of the beads should be at least 150% of the cu rrent that is actually expected to flow through them. a bulk cap (2.2 -10 ? f) should be placed on each side of each bead. in addition, a high-frequency bypass cap (0.01 ? f) should be placed near each analog vcc pin. 5.2.2 power and ground pl ane layout considerations great care needs to be taken when laying out the power and ground planes. ? follow the guidelines in the cortina systems ? {doc:productname:long} design and layout guide for locating the split between the digital and analog vcc planes. ? keep the digital vcc plane away from the tpfop/n and tp fip/n signals, the magnetics, and the rj-45 connectors. ? place the layers so the tpfop/n and tfpip /n signals can be routed close to the ground plane. for emi reasons, it is more important to shield tpfop/n than tpfip/n. 5.2.2.1 chassis ground for esd reasons, it is a good design practice to create a separate chassis ground that encircles the board and is isolated via moats and keep-out areas from all circuit-ground planes and active signals. chassis ground sh ould extend from the rj-45 connectors to the magnetics, and can be used to terminate unus ed signal pairs (bob smith termination). in single-point grounding applications, provide a si ngle connection between chassis and circuit grounds with a 2 kv isolation capacitor. in multi-point grounding schemes (chassis and circuit grounds joined at mu ltiple points), provide 2 kv isolation to the bob smith termination. 5.2.3 mii terminations series termination resistors are required on all the ss-smii output signals driven by the lxt9785/lxt9785e. special trace layout cons ideration should be used when using the smii interface. keep all traces orthogonal and as short as possible. whenever possible, route the clock and sync traces evenly between the longest and shortest data routes. this minimizes round-trip, clock-to-data delays and a llows a larger margin to the setup and hold requirements. 5.2.4 twisted-pair interface use the following standard guidelines for a twisted-pair interface: ? place the magnetics as close as possible to the lxt9785/lxt9785e. ? keep transmit pair traces as short as possible; both traces should have the same length. ? avoid vias and layer changes as much as possible. ? keep the transmit and receive pairs apart to avoid cross-talk.
page 187 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 5.2 general design guidelines ? route the transmit pair adjacent to a gr ound plane. the optimum arrangement is to place the transmit traces two to three layers from the ground plane, with no intervening signals. ? improve emi performance by filtering the tpo center tap. a single ferrite bead rated at 400 ma may be used to supply center tap current to all ports. 5.2.4.1 magnetic requirements the lxt9785/lxt9785e requires a 1:1 ratio for both the receive transformers and the transmit transformers. the transmit isolation volt age should be rated at 1.5 kv to protect the circuitry from static voltages across the con nectors and cables. the lxt9785/lxt9785e is a current driven transceiver that requires an external voltage (center tap) to drive the transmit signal. in order to support the auto -mdix functionality of the lxt9785/lxt9785e, the magnetic must provide a center tap for bo th the transmit and receive magnetic winding, with both connected to vcct. see the lxt9785/lxt9785e design and layout guide (249509-001) for magnetic testing with the lxt9785/lxt9785e. before committing to a specific component, designers should cont act the manufacturer for current product specifications, and validate the magneti cs for the specific application. ta b l e 5 1 provides the magnetics requirements. 5.2.5 the fiber interface the fiber interface consists of an lvpecl tran smit and receive pair to an external fiber transceiver. both 3.3 v fiber transceivers an d 5 v fiber transceivers can be used with the lxt9785/lxt9785e. see the 100base-fx fiber optic tr ansceivers-connecting a pecl/lvpecl interface applic ation note (document num ber 250781) for detailed information on fiber interface designs and recommendations for cortina phys. the following should occur in 3.3 v fiber transceiver applications as shown in figure 36 : ? the transmit pair should be ac-coupled with 2.5 v supplies and re-biased to 3.3 v lvpecl levels ? the transmit pair should contain a balance offset in the pull-up resistors to prevent phy-to-fiber transceiver crosstalk amplification in power-down, loopback, and reset states (see fiber interface application note) ? the receive pair should be dc-coupled with an emitter current path for the fiber transceiver table 51 magnetics requirements parameter min nom max units test condition rx turns ratio ? 1:1 ? ? tx turns ratio ? 1:1 ? ? insertion loss 0.0 0.6 1.1 db primary inductance 350 ? ? ? h transformer isolation ? 2 ? kv differential to common mode rejection 40 ? ? db .1 to 60 mhz 35 ? ? db 60 to 100 mhz return loss -16 ? ? db 30 mhz -10 ? ? db 80 mhz
page 188 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 5.3 typical application circuits ? the signal detect pin should be dc-coupled with an emitter current path for the fiber transceiver refer to the fiber transceiver manufacturer? s recommendations for termination circuitry. figure 36 shows a typical example of an lxt9785/lxt9785e-to-3.3 v fiber transceiver interface. the following occurs in 5 v fiber transceiver applications as shown in figure 37 : ? the transmit pair should be ac-coupled and re-biased to 5 v pecl input levels ? the transmit pair should contain a balance offset in the pull-up resistors to prevent phy-to-fiber transceiver crosstalk amplification in power-down, loopback, and reset states (see fiber interface application note) ? the receive pair should be ac-coupled with an emitter current path for the fiber transceiver and re-biased to 1.2 v ? the signal detect pin on a 5 v fiber transceiver interface should use the logic translator circuitry as shown in figure 38 . refer to the fiber transceiver manufacturer? s recommendations for termination circuitry. figure 37 shows a typical example of an lxt9785/lxt9785e-to-5 v fiber transceiver interface, while figure 38 shows the interface circuitry for the logic translator. 5.2.6 led circuit each direct drive led has a corresponding open-drain pin. the leds are connected through a current-limiting resistor to a positive-voltage rail. the leds are turned on when the output pin drives low. the open-drain led pi ns are 5 v tolerant, allowing use of either a 3.3 v or 5 v rail (a 2.5 v rail is unlikely to work with standard forward voltage leds). a 5 v rail eases led component selection by allowing more common, high-forward voltage leds to be used. refer to figure 33 for a circuit illustration. 5.3 typical application circuits figure 34 through figure 37 on page 192 show typical application circuits for the lxt9785/lxt9785e. figure 38 on page 193 shows the interface circuitry for the logic translator. figure 33 led circuit r v led inside ic outside ic led n _m vccio < v led < 5 v + 5%
page 189 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 5.3 typical application circuits figure 34 power and ground supply connections gndr/gndt vccr/vcct 0.01 ? f gndd vccd 0.01 ? f + ferrite bead 10 ? f lxt9785/9785e 10 ? f digital supply plane analog supply plane vccio +2.5 v + 2.5 v or +3.3 v 0.01 ? f sgnd +2. 5 v or +3.3 v vccpecl gndpecl 0.1 ? f
page 190 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 5.3 typical application circuits figure 35 typical twisted-pair interface tpfop tpfon rj-45 * = 0.001 ? f / 2.0 kv to twisted-pair network 3 6 1 2 1:1 lxt9785/9785e 50 ? 50 ? 50 ? 50 ? 50 ? 50 ? 4 5 8 7 1:1 tpfip tpfin vcct gnda 0.1 ? f .01 ? f 2 1 * = 0.001 ? f / 2.0 kv .01 ?? f 1. the 100 ? transmit load termination resistor typi cally required is integrated in the lxt9785/lxt9785e. 2. the 100 ? receive load termination resistor typi cally required is integrated in the
page 191 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 5.3 typical application circuits figure 36 recommended lxt9785/lxt9785e-to-3.3 v fiber transceiver interface circuitry lxt9785(e) tpfin n tpfip n tpfop n tpfon n to fiber network 3.3v fiber txcvr td - td + rd - rd + sd sd n +2.5v +2.5v +3.3v ???? ??? ??? ??? ??? ????? f ?????? f ???? ???? 1 ?????? f ?????? f +3.3v ????? f ?????? f ? k ?? k ? ??? k ???? k ? sd_2p5v gndpecl vccpecl 3.3v 1. refer to the transceiver manufacturers? recommendations for te rmination circuitry.
page 192 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 5.3 typical application circuits figure 37 recommended lxt9785/lxt9785e-to- 5 v fiber transceiver interface circuitry lxt9785(e) tpfin n tpfip n tpfop n tpfon n to fiber network 5v fiber txcvr td - td + rd - rd + sd sd n +2.5v +2.5v +2.5v ????? f ????? f ????? f ?????? f ????? f ?????? f ????? f ????? f on semiconductor* mc100lvel92 pecl-to-lvpecl logic translator 2 ??? ??? ??? ???? ???? ???? ???? ???? ???? 1 +5v ??? k ? ??? k ? ???? k ???? k ? ????? f ?????? f sd_2p5v gndpecl vccpecl 3.3v 1. refer to the transceiver manufacturers? recommendations for termination circuitry. 2. see figure 38 on page 193 for recommended logic translator interface circuitry.
page 193 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 5.3 typical application circuits figure 38 on semiconductor trip le pecl-to-lvpecl translator vcc d0 __ d0 vbb pecl d1 __ d1 vbb pecl d2 __ d2 gnd vcc q0 __ q0 lvcc q1 __ q1 lvcc q2 __ q2 vcc 0.01 ? f 5v 0.01 ? f 3.3v lvpecl output signal (lxt9785) pecl input signal (5v fiber txcvr) 3.3v 130 ? 82 ? 5v 130 ? 82 ? on semiconductor* mc100lvel92 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 0.01 ? f 3.3v 130 ? 82 ?
page 194 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications 6.0 test specifications table 52 through ta b l e 8 2 and figure 39 through figure 62 represent the target specifications of the lxt9785/lxt9785e. thes e specifications are not guaranteed and are subject to change without notice. mi nimum and maximum values listed in table 54 through table 82 apply over the recommended operating conditions specified in ta b l e 5 3 . table 52 absolute maximum ratings parameter sym min max units supply voltage v ccio , v cc pecl -0.3 4.0 v v cca , v ccd -0.3 3.0 v storage temperature t st -65 +150 oc caution: exceeding these values may cause permanent damage. functional operation under these conditions is not implied. exposure to maximum rating conditions for extended periods may af fect device reliability. table 53 operating conditions (sheet 1 of 2) parameter sym min typ1 (2.5 v ccio ) typ1 (3.3 v ccio ) max units commercial operating temperature ambient topa 0 ? ? 70 oc case topc 0 ? ? 108 oc extended operating temperature ambient t opa -40 85 oc case t opc -40 123 oc supply voltage 2 analog & digital vcca, vccd 2.38 2.5 2.5 2.63 v i/o v ccio 2.38 2.5 3.3 3.46 v i/o (sd_2p5v = 0) vccpecl 3.14 n/a 3.3 3.46 v i/o (sd_2p5v = 1) 2.38 2.5 n/a 2.63 v operating current - rmii 3 100base-tx i cc ? 780 810 ma i ccio ? 60 130 160 ma 100base-fx i cc ? 380 410 ma i ccio ? 90 170 200 ma 10base-t i cc ? 710 765 ma i ccio ?30 70 90ma power-down mode hardware i cc ?20 20ma i ccio ?2 3 4ma auto-negotiation i cc ? 500 540 ma i ccio ?2 4 4ma 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. voltages with respect to ground unless otherwise specified. 3. values are aggregated for all eight ports.
page 195 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications operating current - smii 3 100base-tx i cc ? 800 830 ma i ccio ? 70 130 160 ma 100base-fx i cc ? 380 410 ma i ccio ? 90 170 200 ma 10base-t i cc ? 740 770 ma i ccio ? 60 110 130 ma power-down mode hardware i cc ?50 50ma i ccio ?3 5 5ma auto-negotiation i cc ? 520 570 ma i ccio ?20 30 30ma operating current - ss-smii 3 100base-tx i cc ? 800 835 ma i ccio ? 90 170 200 ma 100base-fx i cc ? 380 410 ma i ccio ? 90 170 200 ma 10base-t i cc ? 740 780 ma i ccio ? 90 150 180 ma power-down mode hardware i cc ?30 40ma i ccio ?3 5 5ma auto-negotiation i cc ? 530 570 ma i ccio ?50 70 80ma table 54 digital i/o dc electrical characteristics (vccio = 2.5 v +/- 5%) parameter sym min typ1 max units test conditions input low voltage v il ??0.75v ? input high voltage v ih 1.75 ? ? v ? input current i i -100 ? 100 ? a 0.0 < v i < v cc output low voltage v ol ??0.2v i ol = 4 ma output low voltage (led m _ n _l pins) v ol -led ? ? 0.5 v i ol = 10 ma output high voltage v oh 2.07 ? ? v i oh = -4 ma 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. table 53 operating conditions (sheet 2 of 2) parameter sym min typ1 (2.5 v ccio ) typ1 (3.3 v ccio ) max units 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. voltages with respect to ground unless otherwise specified. 3. values are aggregated for all eight ports.
page 196 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications table 55 digital i/o dc electrical characteristics (vccio = 3.3 v +/- 5%) parameter sym min typ1 max units test conditions input low voltage v il ??0.8v ? input high voltage v ih 2.0 ? ? v ? input current i i -100 ? 100 ? a 0.0 < v i < v cc output low voltage v ol ??0.2v i ol = 4 ma output low voltage (led m _ n _l pins) v ol -led ? ? 0.5 v i ol = 10 ma output high voltage v oh 2.4 ? ? v i oh = -4 ma 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. table 56 digital i/o dc electrical characteristics ? sd pins parameter sym min typ 1 max units test conditions 2.5 v operation input low voltage v il 0.69 0.8 1.03 v vccpecl = 2.5 v input high voltage v ih 1.34 1.6 1.62 v vccpecl = 2.5 v 3.3 v operation input low voltage v il 1.49 1.6 1.83 v vccpecl = 3.3 v input high voltage v ih 2.14 2.4 2.42 v vccpecl = 3.3 v 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. for 2.5 v operation, sd_2p5v = vccpecl and vccpecl=2.5 v. 3. for 3.3 v operation, sd_2p5v = gndpecl or floating and vccpecl=3.3 v. table 57 required clock characteristics parameter sym min typ2 max units test conditions smii input frequency f ? 125 ? mhz ? rmii input frequency f ? 50 ? mhz ? input clock frequency tolerance 1 ? f ? ? 50 ppm ? input clock duty cycle 1 tdc 35 50 65 % rmii selection input clock duty cycle - refclk, txclk 1 tdc 40 50 60 % smii/ss-smii selection output rxclk duty cycle tdc 45 50 55 % ss-smii only 1. parameter is guaranteed by design; not subject to production testing. 2. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing.
page 197 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications table 58 100base-tx transceiver characteristics parameter sym min typ 1 max units test conditions peak differential output voltage v p 0.95 ? 1.05 v note 2 signal amplitude symmetry vss 98 ? 102 % note 2 signal rise/fall time t rf 3? 5ns note 2 rise/fall time symmetry t rfs ??0.5ns note 2 duty cycle distortion ? ? ? +/- 0.5 ns offset from 16 ns pulse width at 50% of pulse peak overshoot v o ?? 5 % ? jitter magnitude (measured differentially) t tx-jit ??1.4ns ? 1. typical values are at 25 c and are for design aid on ly; not guaranteed and not subject to production testing. 2. measured at the line side of t he transformer, line replaced by 100 ?? (+/-1%) resistor. table 59 100base-fx transceiver characteristics parameter sym min typ 1 max units test conditions transmitter peak-to-peak differential output voltage v diffp - p 0.6 1.44 ? v ? signal rise/fall time t rf ?? 1.8 ns note2 jitter magnitude (measured differentially) t tx-jit ?? 1.4 ns ? receiver peak differential input voltage v ip 0.55 ? ? v ? common mode input range v cmir ??v cc - 0.5 v ? input low voltage (sd pins) v il v cc -1.84 v cc -1.63 v? input high voltage (sd pins) v ih v cc -1.04 v cc -0.88 v? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. 20 - 80 percent into 100 ? equivalent load of a typical fiber transceiver. table 60 10base-t transc eiver characteristics (sheet 1 of 2) parameter sym min typ 1 max units test conditions transmitter peak differential output voltage v op 2.2 2.5 2.8 v note 2 link transmit period ? 8 ? 24 ms ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. parameter is guaranteed by design; not subject to production testing. 3. ieee 802.3 specifies maximum jitter addition at 1.5 ns for the aui cable, 0.5 ns from the encoder, and 3.5 ns from the mau. 4. after line model specified by ieee 802.3 for 10base-t mau.
page 198 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications jitter magnitude added by the mau and pls sections 3,4 t tx-jit ??11 ns ? receiver receive input impedance 3 z in ? 100 ? w between tpfip and tpfin link min receive timer tlrmin 2 ? 7 ms ? link max receive timer tlrmax 50 ? 150 ms ? differential squelch threshold v ds ? 475 ? mv peak 5 mhz square wave input figure 39 smii - 100base-tx receive timing table 61 smii - 100base-tx receive timing parameters (sheet 1 of 2) parameter sym min typ1 max units test conditions rxdata output delay from refclk rising edge t1 1.5 ? 5 ns minimum c l = 5 pf maximum c l = 20 pf rxdata rise/fall time t2 ? 1.0 ? ns ? receive start of /j/ to crs asserted t3 ? 21 29 bt 2 synchronous sampling of smii 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). table 60 10base-t transc eiver characteristics (sheet 2 of 2) parameter sym min typ 1 max units test conditions 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. parameter is guaranteed by design; not subject to production testing. 3. ieee 802.3 specifies maximum jitter addition at 1.5 ns for the aui cable, 0.5 ns from the encoder, and 3.5 ns from the mau. 4. after line model specified by ieee 802.3 for 10base-t mau. refclk rxdata tpfi t 3 t 1 t 2 t 4 t 6 t 5 sync
page 199 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications receive start of /t/ to crs de-asserted t4 ? 25 30 bt 2 synchronous sampling of smii sync setup to refclk rising edge t5 1.5 ? ? ns ? sync hold from refclk rising edge t6 1.0 ? ? ns ? figure 40 smii - 100base-tx transmit timing table 62 smii - 100base-tx transmit timing parameters parameter sym min typ1 max units test conditions sync setup to refclk rising edge and txdata setup to refclk rising edge t1 1.5 ? ? ns ? sync hold from refclk rising edge and txdata hold from refclk rising edge t2 1.0 ? ? ns ? txen sampled to start of /j/ t3 ? 11 18 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). table 61 smii - 100base-tx receive timing parameters (sheet 2 of 2) parameter sym min typ1 max units test conditions 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). txdata tpfo t 1 t 2 t 3 sync t 1 t 2 refclk
page 200 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications figure 41 smii - 100base-fx receive timing table 63 smii - 100base-fx receive timing parameters parameter sym min typ1 max units test conditions rxdata output delay from refclk rising edge t1 1.5 ? 5 ns minimum c l = 5 pf maximum c l = 20 pf rxdata rise/fall time t2 ? 1 ? ns ? receive start of /j/ to crs asserted t3 ? 18 26 bt 2 synchronous sampling of smii receive start of /t/ to crs de-asserted t4 ? 23 27 bt 2 synchronous sampling of smii sync setup to refclk rising edge t5 1.5 ? ? ns ? sync hold from refclk rising edge t6 1.0 ? ? ns ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). figure 42 smii - 100base-fx transmit timing refclk rxdata tpfi t 3 t 1 t 2 t 4 t 6 t 5 sync txdata tpfo t 1 t 2 t 3 sync t 1 t 2 refclk
page 201 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications table 64 smii - 100base-fx transmit timing parameters parameter sym min typ1 max units test conditions sync setup to refclk rising edge and txdata setup to refclk rising edge t1 1.5 ? ? ns ? sync hold from refclk rising edge and txdata hold from refclk rising edge t2 1.0 ? ? ns ? txen sampled to start of /j/ t3 ? 10 17 bt 2 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). figure 43 smii - 10base-t receive timing table 65 smii - 10base-t receive timing parameters (sheet 1 of 2) parameter sym min typ1 max units test conditions rxdata output delay from refclk rising edge t1 1.5 ? 5 ns minimum c l = 5 pf maximum c l = 20 pf rxdata rise/fall time t2 ? 1 ? ns ? receive start-of-frame to crs asserted t3 ? 17 21 bt 3 synchronous sampling of smii 2 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. assumes each smii segment is sampled for crs. 3. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). refclk rxdata tpfi t 3 t 1 t 2 t 4 t 6 t 5 sync
page 202 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications receive start-of-idle to crs de-asserted t4 ? 17 18 bt 3 synchronous sampling of smii 2 sync setup to refclk rising edge t5 1.5 ? ? ns ? sync hold from refclk rising edge t6 1.0 ? ? ns ? figure 44 smii - 10base-t transmit timing table 66 smii-10base-t transmit timing parameters parameter sym min typ1 max units test conditions sync setup to refclk rising edge and txdata setup to refclk rising edge t1 1.5 ? ? ns ? sync hold to refclk rising edge and txdata hold from refclk rising edge t2 1.0 ? ? ns ? txen sampled to start-of-frame t3 ? 10 14 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). table 65 smii - 10base-t receive timing parameters (sheet 2 of 2) parameter sym min typ1 max units test conditions 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. assumes each smii segment is sampled for crs. 3. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). txdata tpfo t 1 t 2 t 3 sync t 1 t 2 refclk
page 203 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications figure 45 ss-smii - 100b ase-tx receive timing table 67 ss-smii - 100base-tx receive timing parameters parameter sym min typ1 max units test conditions refclk rising edge to rxclk rising edge t1 ? 1.5 ? ns ? rxdata/rxsync output delay from rxclk rising edge t2 1.5 ? 5 ns minimum c l = 5pf maximum c l = 40pf rxdata/rxsync rise/fall time t3 ? 1.0 ? ns ? receive start of /j/ to crs asserted t4 ? 21 27 bt 2 ? receive start of /t/ to crs de-asserted t5 ? 25 30 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). figure 46 ss-smii - 100b ase-tx transmit timing t 2 rxclk refclk t 1 rxdata tpfi t 4 t 3 t 5 rxsync t 3 t 3 txdata tpfo t 1 t 2 t 3 txsync t 1 t 2 txclk
page 204 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications table 68 ss-smii - 100base-tx transmit timing parameter sym min typ1 max units test conditions txsync setup to txclk rising edge and txdata setup to txclk rising edge t1 1.5 ? ? ns ? txsync hold from txclk rising edge and txdata hold to txclk rising edge t2 1.0 ? ? ns ? txen sampled to start of /j/ t3 ? 11 18 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). figure 47 ss-smii - 100base-fx receive timing table 69 ss-smii - 100base-fx receive timing parameters parameter sym min typ1 max units test conditions refclk rising edge to rx clk rising edge t1 ? 1.5 ns ? rxdata/rxsync output delay from rxclk rising edge t2 1.5 ? 5 ns minimum c l = 5pf maximum c l = 40pf rxdata/rxsync rise/fall time t3 ? 1 ? ns ? receive start of /j/ to crs asserted t4 ? 18 23 bt 2 ? receive start of /t/ to crs de-asserted t5 ? 21 26 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). t 2 rxclk refclk t 1 rxdata tpfi t 4 t 3 t 5 rxsync t 3 t 3
page 205 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications figure 48 ss-smii - 100base-fx transmit timing table 70 ss-smii - 100base-fx transmit timing parameters parameter sym min typ1 max units test conditions txsync setup to txclk rising edge and txdata setup to txclk rising edge t1 1.5 ? ? ns ? txsync hold from txclk rising edge and txdata hold to txclk rising edge t2 1.0 ? ? ns ? txdata to tpfo latency t3 ? 11 13 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). figure 49 ss-smii - 10 base-t receive timing txdata tpfo t 1 t 2 t 3 txsync t 1 t 2 txclk t 2 rxclk refclk t 1 rxdata tpfi t 4 t 3 t 5 rxsync
page 206 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications table 71 ss-smii - 10base-t receive timing parameters parameter sym min typ1 max units test conditions refclk rising edge to rxclk rising edge t1 ? 1.5 ? ns ? rxdata/rxsync output delay from rxclk rising edge t2 1.5 ? 5 ns minimum c l = 5pf maximum c l = 40pf rxdata/rxsync rise/fall time t3 ? 1 ? ns ? receive start-of-frame to crs asserted t4 ? 10 11 bt 3 synchronous sampling of smii 2 receive start-of-idle to crs de-asserted t5 ? 18 21 bt 3 synchronous sampling of smii 2 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. assumes each smii segment is sampled for crs. 3. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). figure 50 ss-smii - 10ba se-t transmit timing table 72 ss-smii - 10 base-t transmit timing parameters parameter sym min typ1 max units test conditions txsync setup to txclk rising edge and txdata setup to txclk rising edge t1 1.5 ? ? ns ? txsync hold to txclk rising edge and txdata hold from txclk rising edge t2 1.0 ? ? ns ? txdata to tpfo latency t3 ? 10 14 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). txdata tpfo t 1 t 2 t 3 txsync t 1 t 2 txclk
page 207 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications figure 51 rmii - 100base-tx receive timing table 73 rmii - 100base-tx receive timing parameters parameter sym min typ1 max units test conditions rxdata<1:0>, crs_dv, rxer setup to refclk rising edge 3 t1 4 ? 14 ns ? rxdata<1:0>, crs_dv, rxer hold from refclk rising edge 3 t2 2 ? 14 ns ? receive start of /j/ to crs_dv asserted t3 ? 16 21 bt 2 ? receive start of /t/ to crs_dv de-asserted t4 ? 20 27 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). 3. values and conditions from rm ii specification, rev. 1.2. note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). figure 52 rmii - 100base-tx transmit timing refclk rxdata[1:0] tpfi t 1 t 2 t 3 crs_dv t 4 refclk txdata(1:0) tpfo t 3 t 1 t 2 txen t 1 t 2
page 208 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications table 74 rmii - 100base-tx tr ansmit timing parameters parameter sym min typ1 max units test conditions txdata<1:0>/txen setup to refclk rising edge t1 4 ? ? ns ? txdata<1:0>/txen hold from refclk rising edge t2 2 ? ? ns ? txen sampled to tpfo out (tx latency) t3 ? 12 17 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). figure 53 rmii - 100base-fx receive timing table 75 rmii - 100base-fx receive timing parameters parameter sym min typ1 max units test conditions rxdata<1:0>, crs_dv, rxer setup to refclk rising edge 3 t1 4 ? 14 ns ? rxdata<1:0>, crs_dv, rxer hold from refclk rising edge 3 t2 2 ? 14 ns ? receive start of /j/ to crs_dv asserted t3 ? 14 18 bt 2 ? receive start of /t/ to crs_dv de-asserted t4 ? 18 25 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). 3. values and conditions from rm ii specification, rev. 1.2. note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). refclk rxdata[1:0] tpfi t 1 t 2 t 3 crs_dv t 4
page 209 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications figure 54 rmii - 100base-fx transmit timing table 76 rmii - 100base-fx transmit timing parameters parameter sym min typ1 max units test conditions txdata<1:0>/txen setup to refclk rising edge t1 4 ? ? ns ? txdata<1:0>/tx-en hold from refclk rising edge t2 2 ? ? ns ? txen sampled to tpfo out (tx latency) t3 ? 10 12 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). figure 55 rmii - 10base-t receive timing refclk txdata(1:0) tpfo t 3 t 1 t 2 txen t 1 t 2 refclk rxdata[1:0] tpfi t 1 t 2 t 3 crs_dv t 4
page 210 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications table 77 rmii - 10base-t re ceive timing parameters parameter sym min typ1 max units test conditions rxdata<1:0>, crs_dv setup to refclk rising edge 3 t1 4 ? 14 ns ? rxdata<1:0>, crs_dv hold from refclk rising edge 3 t2 2 ? 14 ns ? tpfi in to crs_dv asserted t3 1.5 3 4 bt 2 ? tpfi quiet to crs_dv de-asserted t4 12 15 16 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). 3. values and conditions from rm ii specification, rev. 1.2. note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). figure 56 rmii - 10base-t transmit timing table 78 rmii - 10base-t tran smit timing parameters parameter sym min typ1 max units test conditions txdata<1:0>/txen setup to refclk rising edge t1 4 ? ? ns ? txdata<1:0>/txen hold from refclk rising edge t2 2 ? ? ns ? txen sampled to tpfo out (tx latency) t3 ? 8.5 14 bt 2 ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. ?bt? signifies bit times at the line rate (that is , bt = 100 ns if using 10base-t, bt = 10 ns if using 100base-tx or 100base-fx). note: the table latency values are derived with the hardw are configuration pins fifosel[1:0] set at a default configuration of 00 (32 bits of initial fill). refclk txdata(1:0) tpfo t 3 t 1 t 2 txen t 1 t 2
page 211 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications figure 57 auto-negotiation and fast link pulse timing figure 58 fast link pulse timing table 79 auto-negotiation and fast link pulse timing parameters parameter sym min typ1 max units test conditions clock/data pulse width t1 ? 100 ? ns ? clock pulse to data pulse t2 55.5 ? 69.5 ? s? clock pulse to clock pulse t3 111 ? 139 ? s? flp burst width t4 ? 2 ? ms ? flp burst to flp burst t5 8 ? 24 ms ? clock/data pulses per burst ? 17 ? 33 ea ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. tpfop t1 t1 t2 t3 clock pulse data pulse clock pulse tpfop t4 t5 flp burst flp burst
page 212 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications figure 59 mdio write timing (mdio sourced by mac) figure 60 mdio read timing (mdio sourced by phy) table 80 mdio timing parameters parameter sym min typ1 max units test conditions mdio setup before mdc, sourced by sta t1 10 ? ? ns ? mdio hold after mdc, sourced by sta t2 10 ? ? ns ? mdc to mdio output delay, sourced by phy t3 0 ? 40 ns ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. t1 mdc mdio t2 t3 mdc mdio
page 213 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 6.0 test specifications figure 61 power-up timing table 81 power-up timing parameters parameter sym min typ1 max units test conditions voltage threshold v1 2.1 ? ? v ? power-up recovery time t pdr 100 ? ? ms ? software power-down 2 t spdr 20 ? ? ms ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. 2. the minimum time required between bringing up consec utive ports powered down by register bit 0.11, or a software or hardware reset. figure 62 reset_l recovery timing table 82 reset_l recovery timing parameters parameter sym min typ1 max units test conditions reset pulse width tpw 10 ? ? ns ? reset recovery delay trcdly 0.4 ? ? ms ? 1. typical values are at 25 c and are for design aid only; not guaranteed and not subject to production testing. vcc mdio,etc v1 tpdr reset mdio,etc tpw trcdly
page 214 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 7.0 register definitions the lxt9785/lxt9785e register set includes multiple 16-bit registers and 18 registers per port. ta b l e 8 3 presents a complete register listing. table 84, control register (address 0) , on page 215 through ta b l e 1 0 1 , cable diagnostics register (address 29, hex 1d) , on page 231 define individual registers and table 102, register bit map, on page 232 provides a consolidated memory map of all registers. base registers (0 through 8) are defined in accordance wit h the ?reconciliation sublayer and media independent interface? and ?physical layer link signaling for 10/100 mbps auto-negotiation? sections of the ieee 802.3 standard. additional registers (16 through 21, 25, 27, a nd 29) are defined in a ccordance with the ieee 802.3 standard for adding unique device functions. the bga15 package on some registers has different default values. some lxt9785/lxt9785e features are not available on the bga15 package. these differences are called out in the register description and in the table notes in individual register tables. table 83 register set (sheet 1 of 2) address register name bit assignments 0 control register (address 0) refer to table 84 on page 215 1 status register (address 1) refer to table 85 on page 216 2 phy identification register 1 (address 2) refer to table 86 on page 217 3 phy identification register 2 (address 3) refer to table 87 on page 217 4 auto-negotiation advertisement register (address 4) refer to table 88 on page 218 5 auto-negotiation link partner base page ability register (address 5) refer to table 89 on page 219 6 auto-negotiation expansion register (address 6) refer to table 90 on page 220 7 auto-negotiation next page transmit register (address 7) refer to table 91 on page 220 8 auto-negotiation link partner next page receive register (address 8) refer to table 92 on page 221 9 1000base-t/100base-t2 control not implemented 10 1000base-t/100base-t2 status not implemented 15 extended status not implemented 16 port configuration register (address 16, hex 10) refer to table 93 on page 222 17 quick status register (address 17, hex 11) refer to table 94 on page 223 18 interrupt enable register (address 18, hex 12) refer to table 95 on page 224 19 interrupt status register (address 19, hex 13) refer to table 96 on page 225 20 led configuration register (address 20, hex 14) refer to table 97 on page 226 21 receive error count register (address 21, hex 15) refer to table 98 on page 228 22-24 reserved n/a 25 rmii out-of-band signaling register (address 25, hex 19) refer to table 99 on page 228 26 reserved n/a 27 trim enable register (address 27, hex 1b) refer to table 100 on page 229
page 215 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 28 reserved n/a 29 cable diagnostics register (address 29, hex 1d) refer to table 101 on page 231 30 - 31 reserved n/a table 84 control register (address 0) (sheet 1 of 2) bit name description type 1 default 15 reset_l 0 = normal operation 1 = phy reset r/w sc 0 2 14 6 loopback 0 = disable loopback mode 1 = enable loopback mode not recommended to enable auto-negotiation while in internal loopback operation. r/w 0 13 speed selection 0.6 1 1 0 0 0.13 1 = reserved 0 = 1000 mbps (not allowed) 1 = 100 mbps 0 = 10 mbps r/w lshr 3,4 12 auto-negotiation enable 0 = disable auto-negotiation process 1 = enable auto-negotiation process r/w lshr 3,4 11 power-down 0 = normal operation 1 = power-down r/w lshr 3,5 10 isolate 0 = normal operation 1 = electrically isolate phy from rmii/smii/ss-smii interfaces r/w 0 9 restart auto-negotiation 0 = normal operation 1 = restart auto-negotiation process r/w sc 0 8 duplex mode 0 = half-duplex 1 = full-duplex r/w lshr 3,4 1. r/w = read/write, sc = self clearing when operation complete. 2. during a hardware reset, all lhr information is latched in from the pins. during a software reset (0.15), the lshr information is not re-read from the pins. this info rmation reverts back to the information that was read in during the hardware reset. during a hardware rest, r egister information is unavailable from 1 ms after de-assertion of the reset. during a software reset (0.15) the registers are available for reading. the reset bit should be polled to see when the part has completed reset. 3. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset. 4. default value of register bits 0.12, 0.13, and 0.8 are determined by the cfg pins as described in table 42, global hardware configuration settings , on page 152 . 5. default value of register bit 0.11 is det ermined by the linkhold configuration pin. 6. link status is reported in 10 mbps mode as down and in 100 mbps mode as up in loopback mode. register bits 17.12 (receive status/link change) and 17.13 (transmit status) are not updated in 10 mbps loopback mode. table 83 register set (sheet 2 of 2) address register name bit assignments
page 216 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 7 collision test this bit is ignored by the lxt9785/lxt9785e 0 = disable col signal test 1 = enable col signal test r/w 0 6 speed selection 1000 mbps 0.6 1 1 0 0 0.13 1 = reserved 0 = 1000 mbps (not allowed) 1 = 100 mbps 0 = 10 mbps r/w 0 5:0 reserved write as 0, ignore on read r/w 000000 table 85 status register (address 1) (sheet 1 of 2) bit name description type 1,2 default 15 100base-t4 0 = phy not able to perform 100base-t4 1 = phy able to perform 100base-t4 r0 14 100base-x full-duplex 0 = phy not able to perform full-duplex 100base-x 1 = phy able to perform full-duplex 100base-x r1 13 100base-x half-duplex 0 = phy not able to perform half-duplex 100base-x 1 = phy able to perform half-duplex 100base-x r1 12 10 mbps full-duplex 0 = phy not able to operate at 10 mbps in full-duplex mode 1 = phy able to operate at 10 mbps in full-duplex mode r1 11 10 mbps half-duplex 0 = phy not able to operate at 10 mbps in half-duplex 1 = phy able to operate at 10 mbps in half-duplex mode r1 10 100base-t2 full-duplex 0 = phy not able to perform full-duplex 100base-t2 1 = phy able to perform full-duplex 100base-t2 r0 9 100base-t2 half-duplex 0 = phy not able to perform half-duplex 100base-t2 1 = phy able to perform half-duplex 100base-t2 r0 8 extended status 0 = no extended status information in register 15 1 = extended status information in register 15 r0 7 reserved write as 0, ignore on read r 0 6 mf preamble suppression 0 = phy will not accept management frames with preamble suppressed 1 = phy accepts management frames with preamble suppressed r0 1. r = read only 2. bits that latch high (lh) or latch low (ll) automatically clear when read. table 84 control register (address 0) (sheet 2 of 2) bit name description type 1 default 1. r/w = read/write, sc = self clearing when operation complete. 2. during a hardware reset, all lhr information is latched in from the pins. during a software reset (0.15), the lshr information is not re-read from the pins. this info rmation reverts back to the information that was read in during the hardware reset. during a hardware rest, r egister information is unavailable from 1 ms after de-assertion of the reset. during a software reset (0.15) the registers are available for reading. the reset bit should be polled to see when the part has completed reset. 3. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset. 4. default value of register bits 0.12, 0.13, and 0.8 are determined by the cfg pins as described in table 42, global hardware configuration settings , on page 152 . 5. default value of register bit 0.11 is det ermined by the linkhold configuration pin. 6. link status is reported in 10 mbps mode as down and in 100 mbps mode as up in loopback mode. register bits 17.12 (receive status/link change) and 17.13 (transmit status) are not updated in 10 mbps loopback mode.
page 217 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 5 auto-negotiation complete 0 = auto-negotiation not complete 1 = auto-negotiation complete r0 4 remote fault 0 = no remote fault condition detected 1 = remote fault condition detected r/ll 0 3 auto-negotiation ability 0 = phy is not able to perform auto-negotiation 1 = phy is able to perform auto-negotiation r1 2 link status 0 = link is down 1 = link is up r/ll 0 1 jabber detect 0 = jabber condition not detected 1 = jabber condition detected r/lh 0 0 extended capability 0 = basic register capabilities 1 = extended register capabilities r1 table 86 phy identification register 1 (address 2) bit name description type 1 default 15:0 phy id number the phy identifier composed of bits 3 through 18 of the oui r 0013 hex 1. r = read only table 87 phy identification register 2 (address 3) bit name description type 1 default 15:10 phy id number the phy identifier composed of bits 19 through 24 of the oui r 011110 9:4 manufacturer?s model number 6 bits containing manufacturer?s part number r 001111 3:1 manufacturer?s revision number 3 bits containing manufacturer?s revision number r xxx 2 0 model variant 0 = lxt9785 1 = lxt9785/lxt9785e rx 2 1. r = read only 2. refer to the identification information section in the cortina systems ? lxt9785/lxt9785e specification update. table 85 status register (address 1) (sheet 2 of 2) bit name description type 1,2 default 1. r = read only 2. bits that latch high (lh) or latch low (ll) automatically clear when read.
page 218 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions figure 63 phy identifier bit mapping table 88 auto-negotiation advertisemen t register (address 4) (sheet 1 of 2) bit name description type 1 default 15 next page 0 = port has no ability to send manual next pages 1 = port has ability to send manual next pages note: this bit should only be set to manually control the auto-negotiation process. it is not needed and should be cleared for dte discovery. r/w 0 14 reserved write as 0, ignore on read r 0 13 6 remote fault 0 = no remote fault 1 = remote fault r/w 0 12 reserved write as 0, ignore on read r/w 0 11 asymmetric pause pause operation defined in clause 40 and 27 0 = port is not pause capable 1 = port can only send pause r/w 0 10 pause 5 0 = pause operation disabled 1 = port can send and receive pause note: default for the bga15 package is 0. r/w lshr 2,3 9 100base-t4 0 = 100base-t4 capability is not available 1 = 100base-t4 capability is available (the lxt9785/lxt9785e does not support 100base-t4 but allows this bit to be set to advertise in the auto-negotiation sequence for 100base-t4 operation. an external 100base-t4 transceiver could be swit ched in if this capability is desired.) r/w 0 1. r/w = read/write, r = read only 2. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset. 3. the default setting of register bit 4.10 is deter mined by the pause pin. the bga15 package does not have a pause hardware configuration pin and has a default of 0. 4. default settings for bits 4.5:8 are determined by cfg pins as described in table 42, global hardware configuration settings , on page 152 . 5. pause operation is only va lid for full-duplex modes. 6. if register bit 4.13 is set to adverti se a fault, register bit 1.4 will be set. register bit 4.13 is set or cleared only through the mdc/mdio interface and is not cleared upon completion of auto-negotiation. note: restart the auto-negotiation process whenev er register 4 is written/modified. f a bc 1 23 organizationally unique identifier rs 18 19 0 00 0 00 0 00 0 01 0 01 0 5 1 1 phy id register #1 (address 2) x 24 0 11 1 10 9 4 3 0 5 1 x phy id register #2 (address 3) 10 0 i/g 5 0 manufacturer's model number 30 0 0013 0 002b7 xxx xxxxxx 7b 20 00 the cortina oui is 00207b hex. model variant 1 revision number
page 219 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 8 100base-tx full-duplex 0 = port is not 100base-tx full-duplex capable. 1 = port is 100base-tx full-duplex capable r/w lshr 2,4 7 100base-tx half-duplex 0 = port is not 100base-tx half-duplex capable 1 = port is 100base-tx half-duplex capable r/w lshr 2,4 6 10base-t full-duplex 0 = port is not 10base-t full-duplex capable 1 = port is 10base-t full-duplex capable r/w lshr 2,4 5 10base-t half-duplex 0 = port is not 10base-t half-duplex capable 1 = port is 10base-t half-duplex capable r/w lshr 2,4 4:0 selector field, s<4:0> <00001> = ieee 802.3 <00010> = ieee 802.9 islan-16t <00000> = reserved for future auto-negotiation development <11111> = reserved for future auto- negotiation development unspecified or reserved co mbinations should not be transmitted r/w 00001 table 89 auto-negotiation link partner ba se page ability register (address 5) (sheet 1 of 2) bit name description type 1 default 2 15 next page 0 = link partner has no ability to send multiple pages 1 = link partner has ability to send multiple pages r0 14 acknowledge 0 = link partner has not received link code word from the the lxt9785/lxt9785e 1 = link partner has received link code word from the lxt9785/lxt9785e. r0 13 remote fault 0 = no remote fault 1 = remote fault r0 12 reserved write as 0, ignore on read r 0 11 asymmetric pause pause operation defined in clause 40 and 27 0 = link partner is not pause capable 1 = link partner can only send pause r0 10 pause 0 = link partner is not pause capable 1 = link partner can send and receive pause r0 9 100base-t4 0 = link partner is not 100base-t4 capable 1 = link partner is 100base-t4 capable r0 8 100base-tx full-duplex 0 = link partner is not 100 base-tx full-duplex capable 1 = link partner is 100base-tx full-duplex capable r0 7 100base-tx 0 = link partner is not 100base-tx capable 1 = link partner is 100base-tx capable r0 1. r = read only 2. default value at the start of auto-negotiation code word transmission. table 88 auto-negotiation advertisemen t register (address 4) (sheet 2 of 2) bit name description type 1 default 1. r/w = read/write, r = read only 2. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset. 3. the default setting of register bit 4.10 is deter mined by the pause pin. the bga15 package does not have a pause hardware configuration pin and has a default of 0. 4. default settings for bits 4.5:8 are determined by cfg pins as described in table 42, global hardware configuration settings , on page 152 . 5. pause operation is only va lid for full-duplex modes. 6. if register bit 4.13 is set to adverti se a fault, register bit 1.4 will be set. register bit 4.13 is set or cleared only through the mdc/mdio interface and is not cleared upon completion of auto-negotiation. note: restart the auto-negotiation process whenev er register 4 is written/modified.
page 220 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 6 10base-t full-duplex 0 = link partner is not 10base-t full-duplex capable 1 = link partner is 10base- t full-duplex capable r0 5 10base-t 0 = link partner is not 10base-t capable 1 = link partner is 10base-t capable r0 4:0 selector field s<4:0> <00001> = ieee 802.3 <00010> = ieee 802.9 islan-16t <00000> = reserved for future auto-negotiation development <11111> = reserved for future auto- negotiation development unspecified or reserved combinat ions shall not be transmitted r 00000 table 90 auto-negotiation expa nsion register (address 6) bit name description type 1 default 15:5 reserved write as 0, ignore on read r 0x000 4 parallel detection fault 0 = parallel detection fault has not occurred 1 = parallel detection fault has occurred r/ lh 0 3 link partner next page able 0 = link partner is not next page able 1 = link partner is next page able r0 2 next page able 0 = local device is not next page able 1 = local device is next page able r1 1 page received indicates that a new page has been received and the received code word has been loaded into register 5 or register 8 as specified in clause 28 of 802.3. 0 = three identical and consecutive link code words have not been received from link partner 1 = three identical and consecutive link code words have been received from link partner r/ lh 0 0 link partner a/n able 0 = link partner is not auto-negotiation able 1 = link partner is auto-negotiation able r0 1. r = read only, lh = latching high ? cleared when read table 91 auto-negotiation next page tran smit register (addr ess 7) (sheet 1 of 2) bit name description type 1 default 15 next page (np) 0 = last page 1 = additional next pages follow r/w 0 14 reserved write as 0, ignore on read. r 0 13 message page (mp) 0 = unformatted page 1 = message page r/w 1 1. r/w = read write, r = read only table 89 auto-negotiation link partner ba se page ability register (address 5) (sheet 2 of 2) bit name description type 1 default 2 1. r = read only 2. default value at the start of auto-negotiation code word transmission.
page 221 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 12 acknowledge 2 (ack2) 0 = cannot comply with message 1 = complies with message r/w 0 11 toggle (t) 0 = previous value of the transmitted link code word equalled logic one 1 = previous value of the transmitted link code word equalled logic zero r0 10:0 message/unfor matted code field mp = 0: code interpreted as ?unformatted page? mp = 1: code interpreted as ?message page? r/w 0000000 0001 table 92 auto-negotiation link partner ne xt page receive register (address 8) bit name description type 1 default 2 15 next page (np) 0 = link partner has no additional next pages to send 1 = link partner has additional next pages to send r0 14 acknowledge (ack) 0 = link partner has not received link code word from the lxt9785/lxt9785e 1 = link partner has received link code word from the lxt9785/lxt9785e r0 13 message page (mp) 0 = page sent by the link partner is an unformatted page 1 = page sent by the link partner is a message page r0 12 acknowledge 2 (ack2) 0 = link partner cannot comply with the message 1 = link partner complies with the message r0 11 toggle (t) 0 = previous value of the transmitted link code word equalled logic one 1 = previous value of the transmitted link code word equalled logic zero r0 10:0 message/unform atted code field mp = 1: code interpreted as message page mp = 0: code interpreted as unformatted page r 0x000 1. r = read only 2. default value at the start of auto-negotiation code word transmission. table 91 auto-negotiation next page tran smit register (addr ess 7) (sheet 2 of 2) bit name description type 1 default 1. r/w = read write, r = read only
page 222 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions table 93 port configuration re gister (addre ss 16, hex 10) bit name description type 1 default 15 reserved write as 0, ignore on read r/w 0 14 link disable 0 = normal operation 1 = force link pass (sets appropriate registers and leds to pass) note: setting this bit in 100 mbps mode by-passes the descrambler lock requirement to establish link and forces the link to the link-good state. setting this bit produces unreliable results if the descrambler is not locked, r/w 0 13 transmit disable 0 = normal operation 1 = disable twisted-pair transmitter r/w 0 12 bypass scramble (100base-tx) 0 = normal operation 1 = bypass scrambler and descrambler r/w 0 11 reserved write as 0, ignore on read r/w 0 10 jabber (10base-t) 0 = normal operation 1 = jabber function is enabled; however, jabber status reporting to register bit 1.1 is disabled r/w 0 9 reserved write as 0, ignore on read. r/w 0 8 tp loopback (10base-t) 0 = normal operation 1 = disable twisted-pair loopback during half-duplex operation note: valid function in smii and s-smii modes only. r/w 1 7 reserved write as 1, ignore on read r/w 1 6 reserved write as 0, ignore on read r/w 0 5 preamble enable 10 mbps 0 = no preamble (default) 1 = preamble enabled note: default for bga15 package is 0. r/w lshr 2,4 100 mbps no effect n/a 4 reserved write as 0, ignore on read r/w 0 3 reserved write as 0, ignore on read r/w 0 2 far end fault transmission enable 0 = disable far end fault transmission 1 = enable far end fault transmission r/w 1 invalid for bga15 write as '0', ignore on read (bga15). 1 reserved write as 0, ignore on read. r/w 0 0 fiber select 5 0 = select twisted-pair mode for this port 1 = select fiber mode for this port r/w lshr 2,3 reserved for bga15 write as '0', ignore on read (bga15). note: default for bga15 is 0. 1. r/w = read/write 2. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset. 3. the default value of register bit 16. 0 is determined by the g_fx/tp_l pin. if g_fx/tp_l is tied low, the default value of register bit 16.0 = 0. if g_fx/tp_l is not tied low, the default value of register bit 16.0 = 1. the bga15 package does not have a g_fx/tp_l hardware configuration pin. 4. the default value of register bi t 16.5 is determined by the preasel pin. the bga15 package does not have a preasel hardware configuration pin and has a default of 0. 5. the bga15 package does not support fiber. default for the bga15 package is 0. 6. na means the bits do not have a default va lue and may initially contain any value.
page 223 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions table 94 quick status register (address 17, hex 11) (sheet 1 of 2) bit name description type 1 default 2 15 reserved write as 0, ignore on read r 0 14 10/100 mode 0 = the lxt9785/lxt9785e is operating in 10 mbps mode 1 = the lxt9785/lxt9785e is operating in 100 mbps mode note: the status is valid for tx and fx operation. r0 13 transmit status 0 = the lxt9785/lxt9785e is not transmitting a packet 1 = the lxt9785/lxt9785e is transmitting a packet r lh 0 12 receive status/ link change 0 = no change in link or received frame since last read. 1 = change in the link (link up or link down) or a reception of a frame. r lh 0 11 collision status 0 = a collision is not occurring 1 = a collision is occurring note: this bit is set when jabbe r is detected, regardless of duplex. status is valid only when link is up. r lh 0 10 link 0 = link is down 1 = link is up r0 9 duplex mode 0 = half-duplex 1 = full-duplex r0 8 auto-negotiation 0 = the lxt9785/lxt9785e is in manual mode 1 = the lxt9785/lxt9785e is in auto-negotiation mode this signal is based upon register bit 0.12. rnote 3 7 auto-negotiation complete 0 = auto-negotiation process is not complete 1 = auto-negotiation process is complete r0 6 fifo error 0 = no fifo error occurred 1 = fifo error occurred (overflow or underflow) r lh 0 5 polarity 0 = polarity is not reversed 1 = polarity is reversed note: during 100 mbps operation, this bit is not valid and may vary. auto mdix activity may increase the variability. r0 1. r = read only, lh = latching high ? cleared when read. 2. the default values are updated on completion of reset and re flect the status or change in status at that time. cortina recommends that the register status be read on completion of reset. 3. the default value is determined by the default value of register bit 0.12. 4. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset. 5. default values are set by the hardware configur ation pause pin. the bga15 package does not have a pause hardware configuration pin. the default for the bga15 package is 0.
page 224 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 4 pause 0 = the lxt9785/lxt9785e is not pause capable 1 = the lxt9785/lxt9785e is pause capable note: this bit is not affected by register bit 4.10. note: the default for the bga15 package is 0. rlshr 4,5 3error 0 = no error occurred 1 = error occurred (remote fault, rxercntful, fifo error, jabber, parallel detect fault) note: the register is cleared when the registers that generated the error condition are read. r0 2:0 reserved write as 0, ignore on read. r 0 table 95 interrupt enable register (address 18, hex 12) (sheet 1 of 2) bit name description type 1 default 15:14 2 rxfifo initial fill 00 = reserved 01 = low, 16 bits 10 = normal, 32 bits (default) 11 = jumbo packets, 128 bits r/w lshr 4,5 13 sfd frame alignment 3 (rxdv asserts with crs when enabled) 10 mbps when register bit 16.5 = 1, preamble is not suppressed. r/w 0 0 = disabled 1 = enabled when register bit 16.5 = 0, sfd is always aligned, and preamble is suppressed. 100 mbps 0 = disabled 1 = enabled r/w 0 when enabled, all but one byte of preamble is suppressed. 12:9 reserved write as 0, ignore on read r/w 0000 8cntrmsk mask for counter full 0 = do not allow event to cause interrupt 1 = enable event to cause interrupt r/w 0 1. r/w = read/write 2. in 10 mbps operation, register bit 18.13 = 1 cannot be used when register bits 18.15:14 = ?11? and in rmii mode, registers bits 18.15:14 = ?11? or ?10? c annot be used because the minimum inter gap packet becomes less than specified in the *ieee 802.3 specification. 3. sfd frame alignment is a pplicable to smii and ss-smii only. 4. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset 5. default values are set by hardware c onfiguration pins fifosel1 and fifosel0 (see table 17, receive fifo depth considerations , on page 57 ). table 94 quick status register (address 17, hex 11) (sheet 2 of 2) bit name description type 1 default 2 1. r = read only, lh = latching high ? cleared when read. 2. the default values are updated on completion of reset and re flect the status or change in status at that time. cortina recommends that the register status be read on completion of reset. 3. the default value is determined by the default value of register bit 0.12. 4. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset. 5. default values are set by the hardware configur ation pause pin. the bga15 package does not have a pause hardware configuration pin. the default for the bga15 package is 0.
page 225 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 7anmsk mask for auto-negotiate complete 0 = do not allow event to cause interrupt 1 = enable event to cause interrupt r/w 0 6 speedmsk mask for speed interrupt 0 = do not allow event to cause interrupt 1 = enable event to cause interrupt r/w 0 5 duplexmsk mask for duplex interrupt 0 = do not allow event to cause interrupt 1 = enable event to cause interrupt r/w 0 4 linkmsk mask for link status interrupt 0 = do not allow event to cause interrupt 1 = enable event to cause interrupt r/w 0 3 isolmsk mask for isolate interrupt 0 = do not allow event to cause interrupt 1 = enable event to cause interrupt r/w 0 2 reserved write as 0, ignore on read r/w 0 1inten 0 = disable interrupts on this port 1 = enable interrupts on this port r/w 0 0 tint 0 = normal operation 1 = test force interrupt on mdint_l r/w 0 table 96 interrupt status register (address 19, hex 13) (sheet 1 of 2) bit name description type 1 default 2 15:9 reserved write as 0, ignore on read r 0 8 rxercntful rxer counter full status. 0 = the internal counters have not reached maximum values 1 = one of the internal counters has reached its maximum value r/lh 0 7andone auto-negotiation status. 0 = auto-negotiation has not completed 1 = auto-negotiation has completed r/lh n/a 6 speedchg speed change status. 0 = a speed change has not occurred since last reading this register 1 = a speed change has occurred since last reading this register r/lh 0 1. r = read only, lh = latching high ? cleared when read 2. the default values are updated on completion of reset and re flect the status or change in status at that time. cortina recommends that the register status be read on completion of reset. table 95 interrupt enable register (address 18, hex 12) (sheet 2 of 2) bit name description type 1 default 1. r/w = read/write 2. in 10 mbps operation, register bit 18.13 = 1 cannot be used when register bits 18.15:14 = ?11? and in rmii mode, registers bits 18.15:14 = ?11? or ?10? c annot be used because the minimum inter gap packet becomes less than specified in the *ieee 802.3 specification. 3. sfd frame alignment is a pplicable to smii and ss-smii only. 4. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset 5. default values are set by hardware c onfiguration pins fifosel1 and fifosel0 (see table 17, receive fifo depth considerations , on page 57 ).
page 226 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 5duplexchg duplex change status. 0 = a duplex change has not occurred since last reading this register 1 = a duplex change has occurr ed since last reading this register r/lh 0 4linkchg link status change status. 0 = a link change has not occurre d since last reading this register 1 = a link change has occurred since last reading this register r/lh 0 3 isolate mii isolate change status. 0 = an isolate change has not occurred since last reading this register 1 = an isolate change has occurre d since last reading this register r/lh 0 2 mdint 0 = interrupt not pending 1 = interrupt pending r/lh 0 1:0 reserved reserved r 0 table 97 led configuration register (address 20, hex 14) (sheet 1 of 2) bit name description type 1 default 15:12 led1 programming bits 0000 =display speed status (continuous, default) 0001 =display transmit status (stretched) 0010 =display receive status/link change (stretched) 0011 = display collision status (stretched) 0100 =display link status (continuous) 0101 =display duplex status (continuous) 0110 = display isolate status (continuous) 0111 = display receive or transmit activity (stretched) 1000 =est mode- turn led on (continuous) 1001 =test mode- turn led off (continuous) 1010 =test mode- blink led fast (continuous) 1011 = test mode- blink led slow (continuous) 1100 = display link and receive status combined 2 (stretched) 3 1101 = display link and activity status/link change combined 2 (stretched) 3 1110 = display duplex and collision status combined 4 (stretched) 3 1111 = display link and rxer status combined 2 (blink) r/w 0000 1. r/w = read/write 2. link status is the primary led driver. the led is asserted (solid on) when the link is up. the secondary led driver (receive, activity, or error) causes the led to change state (blink). 3. combined event led settings are not affected by pulse stretch register bit 20.1. these display settings are stretched regardless of the value of 20.1. 4. duplex status is the primary led driver. the le d is asserted (solid on) when the link is full-duplex. collision status is the secondary le d driver. the led changes state (b links) when a co llision occurs. table 96 interrupt status register (address 19, hex 13) (sheet 2 of 2) bit name description type 1 default 2 1. r = read only, lh = latching high ? cleared when read 2. the default values are updated on completion of reset and re flect the status or change in status at that time. cortina recommends that the register status be read on completion of reset.
page 227 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 11:8 led2 programming bits 0000 =display speed status 0001 =display transmit status 0010 =display receive status/link change 0011 = display collision status 0100 =display link status 0101 =display duplex status 0110 = display isolate status 0111 = display receive or transmit activity 1000 =test mode- turn led on 1001 =test mode- turn led off 1010 =test mode- blink led fast 1011 = test mode- blink led slow 1100 = display link and receive status/link change combined 2 (stretched) 3 1101 = display link and activity status combined 2 (default) (stretched) 3 1110 = display duplex and collision status combined 4 (stretched) 3 1111 = display link and rxer status combined 2 (blink) r/w 1101 7:4 led3 programming bits 0000 =display speed status 0001 =display transmit status 0010 =display receive status/link change 0011 = display collision status 0100 =display link status 0101 =display duplex status 0110 = display isolate status 0111 = display receive or transmit activity 1000 =test mode- turn led on 1001 =test mode- turn led off 1010 =test mode- blink led fast 1011 = test mode- blink led slow 1100 = display link and receive status/link change combined 2 (stretched) 3 1101 = display link and activity status combined 2 (stretched) 3 1110 = display duplex and collision status combined 4 (default) (blink) 3 1111 = display link and rxer status combined 2 (blink) r/w 1110 3:2 ledfreq 00 = stretch led events to 30 ms 01 = stretch led events to 60 ms 10 = stretch led events to 100 ms 11 = reserved r/w 00 1 pulse-stre tch 0 = disable pulse stretching of all leds 3 1 = enable pulse stretching of all leds note: receive activity leds are initially active based upon carrier sense. r/w 1 0 reserved write as 0, ignore on read r/w 0 table 97 led configuration register (address 20, hex 14) (sheet 2 of 2) bit name description type 1 default 1. r/w = read/write 2. link status is the primary led driver. the led is asserted (solid on) when the link is up. the secondary led driver (receive, activity, or error) causes the led to change state (blink). 3. combined event led settings are not affected by pulse stretch register bit 20.1. these display settings are stretched regardless of the value of 20.1. 4. duplex status is the primary led driver. the le d is asserted (solid on) when the link is full-duplex. collision status is the secondary le d driver. the led changes state (b links) when a co llision occurs.
page 228 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions table 98 receive error count register (address 21, hex 15) bit name description type 1 default 15:0 receive error count a 16-bit counter value indicating the number of times a receive packet with errors occurred. only one event gets counted per packet. when maximum count is reached, the 16-bit counter remains full until cleared. r/ lh 0x0000 1. r = read only, lh = latching high ? cleared when read note: cortina recommends reading this register once every time link is established to clear the register. table 99 rmii out-of-band signalin g register (address 25, hex 19) bit name description type 1 default bga15 15:0 reserved for bga15 write as 0, ignore on read. r/w 0x0000 pqfp and bga23 15:7 reserved write as 0, ignore on read r/w 0x000 6:4 bit1 these three bits select which status information is available on the rxdata(1) bit of the rmii bus. 000 =link 001 =speed 010 =duplex 011 = auto-negotiation complete 100 = polarity reversed 101 = jabber detected 110 = interrupt pending 111 = reserved r/w 000 3:1 bit0 these three bits select which status information is available on the rxdata(0) bit of the rmii bus. 000 =link 001 =speed 010 =duplex 011 = auto-negotiation complete 100 = polarity reversed 101 = jabber detected 110 = interrupt pending 111 = reserved r/w 000 0 progrmii 0 = disable out-of-band signaling. 1 = enable programmable rmii out-of-band signaling. when enabled, register bits 6:1 specify which status bits are available on the rmii rxdata data bus. note: out-of-band signaling is disabled when the isolate mode is enabled by setting register bit 0.10. r/w 0 1. r/w = read/write note: the bga15 package does not support rmii operation.
page 229 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions table 100 trim enable register (address 27, hex 1b) (sheet 1 of 2) bit name description type 5 default 15:13 reserved write as 0, ignore on read r n/a 12 reserved write as 0, ignore on read. r/w 0 11:10 per-port rise time control 00 = 3.3 ns 01 = 3.6 ns 10 = 3.9 ns 11 = 4.2 ns note: values represent nomi nal load conditions. r/w lshr 1,2 9amdix_en 0 = disable auto mdi/mdix 1 = enable auto mdi/mdix r/w lshr 1,3 8mdix 0 = mdi, transmit on pair a (tpfin n /tpfip n ) and receive on pair b (tpfon n /tpfop n ) 1 = mdix transmit on pair b (tpfon n /tpfop n ) and receive on pair a (tpfin n /tpfip n ) note: manual mdi/mdix selection (this bit is ignored when register bit 27.9 = 1). note: bga15 does not support the mdix hardware configuration. r/w lshr 1,4 7 analog loopback 0 = disable analog loopback 1 = enable analog loopback (twisted-pair transmit outputs are active) note: in fiber mode, sd for the port must be asserted. r/w 0 6 dis_en dte discovery process enable. 0 = disable dte discovery process 1 = enable dte discovery process restart auto-negotiation after writing to this bit to ensure proper operation. r/w 0 5 reserved write as 0, ignore on read. r/w 0 4 power_en power enable (requires auto-negotiation enable register bit 0.12 = 1). 0 = remote-power dte not discovered; process may not be complete. 1 = potential remote-power dte discovered; indication to turn on power over the cable. r0 3 slp_det standard link partner detected. 0 = standard link partner not discovered; process may not be complete. 1 = standard link partner discovered; indication not to turn on power over the cable. note: this bit is only valid while link is down. r, lh 0 1. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset. 2. default values for register bits 27. 11:10 are determined by the txslew pins. 3. default value for register bit 27.9 is determined by the amdix_en pin. 4. default value for register bit 27.8 is determined by the mdix pin. bga15 does not support the mdix hardware configuration. the bga15 default = 0. 5. r/w = read/write, r = read only, lh = latching high ? cleared when read.
page 230 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions 2 lfit expired link fail inhibit timer expiration indicator. valid only when slp_det = 1. 0 = link fail inhibit timer has not expired or standard link partner not discovered 1 = link fail inhibit timer expir ed with a standard link partner detected since last register read or link establishment r, lh 0 1:0 reserved write as 0, ignore on read. r 00 table 100 trim enable register (address 27, hex 1b) (sheet 2 of 2) bit name description type 5 default 1. lshr = default value is derived from a single device input pin state or a group of device input pin states as the pin(s) are latched at startup or hardware reset. 2. default values for register bits 27. 11:10 are determined by the txslew pins. 3. default value for register bit 27.9 is determined by the amdix_en pin. 4. default value for register bit 27.8 is determined by the mdix pin. bga15 does not support the mdix hardware configuration. the bga15 default = 0. 5. r/w = read/write, r = read only, lh = latching high ? cleared when read.
page 231 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 7.0 register definitions table 101 cable diagnostics re gister (address 29, hex 1d) bit name description type 1 default 2 15:14 reserved write as 01, ignore on read r/w 01 13:11 start-test 000 =do not perform cable fault test (default) 101 =perform long cable fault test only 110 = perform short cable fault test only once register bit 29.9 is set, the start-test bits will clear when read. any other combination of the register bit settings are reserved and should not be used. r/w lh 000 10 cd_en 0 = normal operation 1 = enable cable diagnostic tests. forces link to drop. r/w 0 9 test_done 0 = testing is still in progress 1 = testing is complete the line fault counter and fault_type bits are valid. r lh 0 8 fault_type 0 = open condition has been detected 1 = short condition has been detected r lh 0 7:0 line fault counter ?ff? if no line fault is found, or distance to fault, approximately 1 m * counter value (refer to section 4.13, cable diagnostics overview , on page 181 for details). (valid only when test_done bit is set.) r lh 0x00 1. r/w = read/write, r = read only, lh = latching high, cleared when read 2. recommended default value.
page 232 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 table 102 register bit map (sheet 1 of 2) reg title bit fields ad dr b15 b1 4 b13 b1 2 b1 1 b1 0 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 control register (address 0) contro l rese t loo pba ck spee d selec t a/n ena ble pow er do wn isola te re-st art a/n dup lex mod e co l te s t spee d sele ct reserved 0 status register (address 1) status 100b ase-t 4 100 bas e-x full- dupl ex 100b ase-x half- duple x 10 mbp s full- dupl ex 10 mbp s half - dup lex 100 base -t2 full- dupl ex 100b ase-t 2 half- duple x ext end ed stat us res erve d mf prea mble supp ress a/n com plete rem ote fault a/n abilit y link statu s jabb er dete ct ext end ed cap abili ty 1 phy id registers (address 2 and 3) phy id 1 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 2 phy id2 phy id no mfr model no mfr rev no mo del vari ant 3 auto-negotiation advertisement register (address 4) a/n advert ise next page res erve d rem ote fault res erve d asy mm pau se paus e 100b ase-t 4 100 bas e-t x full- dup lex 100 bas e-t x 10ba se-t full- dupl ex 10b ase- t ieee selector field 4 auto-negotiation link partner base page ability register (address 5) a/n link ability next page ack rem ote fault res erve d asy mm pau se paus e 100b ase-t 4 100 bas e-t x full- dup lex 100 bas e-t x 10ba se-t full- dupl ex 10b ase- t ieee selector field 5 auto-negotiation expansion register (address 6) a/n expan sion reserved bas e pag e paral lel dete ct fault link partn er next page able next page able pag e rec eive d link part ner a/n abl e 6 auto-negotiation next page transmit register (address 7) a/n next page txmit next page res erve d mess age page ack 2 to g gle message / unformatted code field 7 auto-negotiation link partner next page ability register (address 8) a/n link next page next page ack mess age page ack 2 to g gle message / unformatted code field 8 port configuration register (address 16)
page 233 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 port config rese rved link disa ble txmit disab le byp ass scra mbl er (100 bas e-t x) byp ass 4b/ 5b (10 0ba se- tx) jabb er (10t ) sqe (10t) tp loo pba ck (10 t) res erve d rese rved pre _en rese rved rese rved far end fault enab le res erve d fib er sel ect 1 6 quick status register (address 17) quick status rese rved 10/1 00 mod e trans mit statu s rec eive r stat us colli sion stat us link duple x mode aut o-n eg aut o-n eg co mpl ete fifo error pola rity paus e error rese rved res erve d res erv ed 1 7 interrupt enable register (address 18) interr upt enable reserved cou nter mas k aut o-n eg mas k spee d mask dupl ex mas k link mask isolat e mask rese rved inter rupt ena ble te s t inte rrup t 1 8 interrupt status register (address 19) interr upt status reserved rxe r cou nter full aut o-n eg don e spee d chan ge dupl ex cha nge link chan ge isolat e chan ge md interr upt res erve d res erv ed 1 9 led configuration register (address 20) led config led1 led2 led3 led freq puls e stret ch res erv ed 2 0 receive error count register (address 21) rcv error count receive error count 2 1 programmable rmii out-of-band signaling register (register 25) rmii oob signali ng reserved bit 1 bit 0 pro gra m rmi i 2 5 trim enable register (address 27) trim enable reserved per port rise time control amdi x_en mdi x ana log loo pba ck dis_ en loop back spe ed up ena ble pow er_e n slp_ det lfit expir ed reserved 2 7 cable diagnostics register (address 29) cable diagno stics reserved start-test cd_e n te s t - done faul t_ typ e line fault counter 2 9 table 102 register bit map (sheet 2 of 2) reg title bit fields ad dr b15 b1 4 b13 b1 2 b1 1 b1 0 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
page 234 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 8.0 package specifications 8.0 package specifications
page 235 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 8.0 package specifications figure 64 208-pin pqfp plastic package specification dim millimeters min max a - 4.10 a1 0.25 - a2 3.20 3.60 b 0.17 0.27 d 30.30 30.90 d 1 27.70 28.30 e 30.30 30.90 e 1 27.70 28.30 e .50 basic l 0.50 0.75 l 1 1.30 ref q 0 7 ? 2 5 16 ? 3 5 16 208-pin plastic quad flat package ? part number lxt9785hc, lxt9785ehc, lxt9785he ? commercial temperature range (0 ? c to 70 ? c) ? extended temperature range (-40 ? c to +85 ? c) e / 2 a 1 a 2 l a b l 1 ? 3 ? 2 ? d d 1 e e 1 e
page 236 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 8.0 package specifications figure 65 241-ball bga23 package specific ations - top/side views (lxt9785bc) pin a1 i.d. pin a1 corner d d1 e e1 top view a a2 a1 c side view 241_pkg1.vsd 14.70 ref 14.70 ref 45 chamfer (4 places) 30 seating plane
page 237 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 8.0 package specifications figure 66 241-ball bga23 package specif ications - bottom view (lxt9785bc) table 103 241-ball bga23 package dimensions (sheet 1 of 2) symbol min nominal max units a 2.19 2.38 2.57 mm a1 0.50 0.60 0.70 mm a2 1.12 1.17 1.22 mm d 22.90 23.00 23.10 mm d1 19.30 19.50 19.70 mm e 22.90 23.00 23.10 mm e1 19.30 19.50 19.70 mm e 1.27 (solder ball pitch) mm i 1.34 ref. mm j 1.34 ref. mm m 17 x 17 matrix mm note: all dimensions and tolerances conform to ansi y14.5-1982. dimension is measured at maximum solder ball diameter parallel to primary datum (- c-). primary datum (-c-) and seating plane are defined by the spherical crowns of the solder balls. pin a1 corner b e 2 10 16 3 5 7 9 11 13 15 17 1 4 6 8 12 14 a b c d e f g h j k l m n p r t u 241 bga bottom view j l e
page 238 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 8.0 package specifications b 0.60 0.75 0.90 mm c 0.52 0.56 0.60 mm e 1.27 mm figure 67 196-ball bga15 package specs - top/side views (lxt9785mbc) table 103 241-ball bga23 package dimensions (sheet 2 of 2) symbol min nominal max units note: all dimensions and tolerances conform to ansi y14.5-1982. dimension is measured at maximum solder ball diameter parallel to primary datum (- c-). primary datum (-c-) and seating plane are defined by the spherical crowns of the solder balls.
page 239 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 8.0 package specifications figure 68 196-ball bga15 package ? bottom view (lxt9785mbc) table 104 196-ball bga15 package dimensions (lxt9785mbc) symbol min nominal max units a 1.62 1.81 2.00 mm a1 0.30 0.40 0.50 mm a2 0.80 0.85 0.90 mm d 14.90 15.00 15.10 mm d1 12.80 13.00 13.20 mm e 14.90 15.00 15.10 mm e1 12.80 13.00 13.20 mm e 1.00 (solder ball pitch) mm i 1.00 ref. mm j 1.00 ref. mm m 14 x 14 matrix mm b 0.40 0.50 0.60 mm c 0.52 0.56 0.60 mm e 1.00 mm note: all dimensions and tolerances conform to ansi y14.5-1982.dimension is measured at maximum solder ball diameter parallel to primary datum (-c-). pr imary datum (-c-) and seating plane are defined by the spherical crowns of the solder balls.
page 240 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 8.1 top label markings 8.1 top label markings figure 69 shows a sample pbga package for the lxt9785/lxt9785e (part numbers: fwlxt9785bc.c2v, fwlxt9785bc.d0 [241-pin]). notes: 1. in contrast to the pb-free (rohs-complia nt) pbga package, the non-rohs-compliant package does not have the ?e1? symbol in the last line of the package label. 2. further information regarding rohs and lead-free components can be obtained from your local cortina representative. earlier versions of the silicon may be marked as either intel* or lev el one communications* as shown in the examples in figure 70 and figure 71 . figure 69 example of top marking inform ation labeled as cortina systems, inc. aaaoooaaa aywwx00a country of origin device name fpo traceability code figure 70 example of top marking info rmation labeled as intel corporation* pin 1 prlxt 9785c c2 xxxxxxxx part number fpo number bsmc bottom side mark code pb-free indication b 5944-01 e1 e 1 fv
page 241 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 8.1 top label markings figure 71 example of top marking informat ion labeled as level one communications* yyww lxt9785xx xxxxxxxxx date code trace code part# lot# xxxx
page 242 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 9.0 ordering information 9.0 ordering information table 105 and figure 72 provide product ordering information. table 105 product information number revision package type pin count rohs compliant fwlxt9785bc.d0 d0 pbga 241 no prlxt9785bc.d0 d0 pbga 241 yes fwlxt9785ebc.d0 d0 pbga 241 no prlxt9785ebc.d0 d0 pbga 241 yes fwlxt9785bc.c2v c2v pbga 241 no prlxt9785bc.c2v c2v pbga 241 yes fwlxt9785ebc.c2v c2v pbga 241 no prlxt9785ebc.c2v c2v pbga 241 yes gdlxt9785mbc.d0 d0 pbga 196 no lulxt9785mbc.d0 d0 pbga 196 yes hblxt9785hc.d0 d0 hqfp 208 no wblxt9785hc.d0 d0 hqfp 208 yes hblxt9785ehc.d0 d0 hqfp 208 no wblxt9785ehc.d0 d0 hqfp 208 yes hblxt9785he.d0 d0 hqfp 208 no wblxt9785he.d0 d0 hqfp 208 yes hblxt9785ehc.c2v c2v hqfp 208 no wblxt9785ehc.c2v c2v hqfp 208 yes hblxt9785hc.c2v c2v hqfp 208 no wblxt9785hc.c2v c2v hqfp 208 yes hblxt9785he.c2v c2v hqfp 208 no wblxt9785he.c2v c2v hqfp 208 yes
page 243 cortina systems ? lxt9785 and lxt9785e advanced 8- port 10/100 mbps phy transceivers lxt9785/lxt9785e datasheet 249241, revision 12.0 04 november 2011 9.0 ordering information figure 72 ordering information - sample temperature range a c e = ambient (0 - 55 c) = commercial (0 - 70 c) = extended (-40 - +85 c) product revision xn = 2 alphanumeric characters fw a6 c b 9785e lxt internal package designator l p n q h t b e k = lqfp = plcc = dip = pqfp = qfp with heat spreader = tqfp = bga = tbga = hsbga (bga with heat slug) product prefix lxt ixf = phy layer device = formatting device (mac) package designator dj fa fl fw hb hd hg s gc n = lqfp = tqfp = pbga (<1.0 mm pitch) = pbga (1.27mm pitch) = qfp with heat spreader = qfp with heat slug = soic = qfp = tbga = plcc xxxx = 3-5 digit alphanumeric product code s e001 qualification q s = pre-production material = production material build format e000 e001 = tray = tape and reel 1. lxt9785 = nominal device lxt9785e = dte detection feature lxt9785mbc = 196 ball bga with dte detection feature
~ end of document ~ for additional product an d ordering information: www.cortina-systems.com tm

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