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GL850 usb 2.0 4-port hub controller datasheet revision 1.11 jun. 25, 2003 genesys logic, inc.
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 2 copyright: copyright ? 2003 genesys logic incorporated. all rights reserved. no part of the materials may be reproduced in any form or by any means without prior written consent of genesys logic inc.. disclaimer: all materials are provided "as is" without express or implied warranty of any kind. no license or right is granted under any patent or trademark of genesys logic inc.. genesys logic hereby disclaims all warranties and conditions in regard to materials, including all warranties, implied or express, of merchantability, fitness for any particular purpose, and non-infringement of intellectual proper ty. in no event shall genesys logic be liable for any damages including, without limitation, damages resulting from loss of information or profits. please be advised that the materials may contain errors or ommisions. genesys logic may make changes to the materials or to the products describe d therein at any time without notice. trademarks: is a registrated trademark of genesys logic inc.. all trademarks are the proper ties of their respective owners. office: genesys logic, inc. 12f, no. 205, sec. 3, beishin rd., shindian city, taipei, taiwan tel: (886-2) 8913-1888 fax: (886-2) 6629-6168 http://www.genesyslogic.com
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 3 revision history revision date description 1.00 05/22/2003 first formal release 1.10 06/11/2003 add bus power statement gang/individual mode setting modified 1.11 06/25/2003 add ?4 port? bus power statement
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 4 table of contents chapter 1 general description........................................................................ 9 chapter 2 features ................................................................................................. 10 chapter 3 pin assignment.................................................................................... 11 3.1 p inouts ....................................................................................................................... 11 3.2 p in l ist ........................................................................................................................ 12 3.3 p in d escriptions ....................................................................................................... 13 chapter 4 block diagram................................................................................... 15 chapter 5 function description .................................................................... 16 5.1 g eneral ...................................................................................................................... 16 5.1.1 usport transceiver......................................................................................... 16 5.1.2 pll (phase lock loop) ..................................................................................... 16 5.1.3 frtimer ........................................................................................................... 16 5.1.4 c ....................................................................................................................... .. 16 5.1.5 utm (usb2.0 transceiver macrocell interface) ............................................ 16 5.1.6 usport logic ..................................................................................................... 16 5.1.7 sie (serial interface engine)............................................................................. 16 5.1.8 control/status register ....................................................................................... 16 5.1.9 repeater ........................................................................................................ 17 5.1.10 tt (transaction translator) ........................................................................... 17 5.1.11 repeater/tt routing logic ......................................................................... 17 5.1.11.1 connected to 1.1 host/hub ...................................................................... 17 5.1.11.2 connected to usb2.0 host/hub .............................................................. 18 5.1.12 dsport logic ................................................................................................... 18 5.1.13 dsport transceiver....................................................................................... 18 5.2 c onfiguration and i/o s ettings .......................................................................... 19 5.2.1 reset# setting .................................................................................................. 19 5.2.2 pgang/suspnd setting .................................................................................. 20 5.2.3 self/bus power setting .................................................................................. 21 5.2.4 led connections ................................................................................................ 22 5.2.5 eeprom setting................................................................................................ 22 5.3 usb p rotocols ......................................................................................................... 23
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 5 5.3.1 host commands and hub answers .................................................................. 24 5.3.1.1 standard requests ...................................................................................... 24 5.3.1.2 hub class requests .................................................................................... 25 5.4 d escriptors ............................................................................................................... 27 5.4.1 full speed case ................................................................................................... 27 5.4.1.1 device descriptor ........................................................................................ 27 5.4.1.2 device qualifier descriptor ....................................................................... 28 5.4.1.3 configuration descriptor ........................................................................... 28 5.4.1.4 interface descriptor.................................................................................... 29 5.4.1.5 endpoint descriptor ................................................................................... 29 5.4.1.6 other speed configuration descriptor..................................................... 30 5.4.1.7 interface descriptor combined with other speed configuration descriptor .................................................................................................... 30 5.4.1.8 endpoint descriptor combined with other speed configuration descriptor .................................................................................................... 31 5.4.1.9 string descriptor......................................................................................... 31 5.4.2 high speed case ................................................................................................. 32 5.4.2.1 device descriptor ........................................................................................ 32 5.4.2.2 device qualifier descriptor ....................................................................... 33 5.4.2.3 configuration descriptor ........................................................................... 33 5.4.2.4 interface descriptor.................................................................................... 34 5.4.2.5 endpoint descriptor in configuration descriptor .................................. 34 5.4.2.6 other speed configuration descriptor..................................................... 35 5.4.2.7 interface descriptor in other speed configuration descriptor............. 35 5.4.2.8 endpoint descriptor in other speed configuration descriptor ............ 36 5.4.2.9 string descriptor......................................................................................... 36 5.4.3 hub class descriptor ......................................................................................... 37 chapter 6 electrical characteristics .................................................... 38 6.1 m aximum r atings .................................................................................................... 38 6.2 dc c haracteristics ................................................................................................ 38 chapter 7 package dimension.......................................................................... 40
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 6 list of figures f igure 3.1 - p inout d iagram ........................................................................................ 11 f igure 4.1 - b lock d iagram ......................................................................................... 15 f igure 5.1 - o perating in usb1.1 scheme .................................................................. 17 f igure 5.2 - o perating in usb2.0 scheme .................................................................. 18 f igure 5.3 - reset# (e xternal r eset ) setting and application ........................ 19 f igure 5.4 - p ower on sequence of GL850 ................................................................ 20 f igure 5.5 - t iming of pgang/suspnd strapping ................................................. 20 f igure 5.6 - gang m ode s etting ............................................................................... 21 f igure 5.7 - self/bus p ower s etting ...................................................................... 21 f igure 5.8 - led c onnection ...................................................................................... 22 f igure 5.9 - s chematics b etween GL850 and 93c46............................................... 23 f igure 7.1 - GL850 64 p in lqfp p ackage .................................................................. 40
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 7 list of tables t able 3.1 - p in l ist ......................................................................................................... 12 t able 3.2 - p in d escriptions ......................................................................................... 13 t able 5.1 - 93c46 c onfiguration ................................................................................ 22 t able 5.2 - s tandard r equest l ist ............................................................................. 24 t able 5.3 - h ub c lass r equests l ist .......................................................................... 25 t able 5.4 - d evice d escriptor for f ull s peed ........................................................ 27 t able 5.5 - d evice q ualifier for f ull s peed ........................................................... 28 t able 5.6 - c onfiguration d escriptor for f ull s peed ......................................... 28 t able 5.7 - i nterface d escriptor for f ull s peed .................................................. 29 t able 5.8 - e ndpoint d escriptor for f ull s peed .................................................... 29 t able 5.9 - o ther s peed c onfiguration d escriptor for f ull s peed ................ 30 t able 5.10 - o ther s peed i nterface d escriptor for f ull s peed ........................ 30 t able 5.11 - o ther s peed e ndpoint d escriptor for f ull s peed ......................... 31 t able 5.12 - s tring i ndex 0 for f ull s peed ............................................................... 31 t able 5.13 - s tring i ndex 1 for f ull s peed ............................................................... 31 t able 5.14 - s tring i ndex 2 for f ull s peed ............................................................... 32 t able 5.15 - d evice d escriptor for h igh s peed ...................................................... 32 t able 5.16 - d evice q ualifier for h igh s peed ........................................................ 33 t able 5.17 - c onfiguration d escriptor for h igh s peed ...................................... 33 t able 5.18 - i nterface d escriptor for h igh s peed ................................................ 34 t able 5.19 - e ndpoint d escriptor for h igh s peed ................................................. 34 t able 5.20 - o ther s peed c onfiguration d escriptor for h ihg s peed .............. 35 t able 5.21 - o ther s peed i nterface d escriptor for h igh s peed ....................... 35 t able 5.22 - o ther s peed e ndpoint d escriptor for h igh s peed ......................... 36 t able 5.23 - s tring i ndex 0 for h igh s peed ............................................................... 36 t able 5.24 - s tring i ndex 1 for h igh s peed ............................................................... 36 t able 5.25 - s tring i ndex 2 for h igh s peed ............................................................... 36 t able 5.26 - h ub c lass d escriptor ............................................................................ 37
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 8 t able 6.1 - m aximum r atings ...................................................................................... 38 t able 6.2 - dc c haracteristics e xcept usb s ignals ........................................... 38 t able 6.3 - dc c haracteristics of usb s ignals u nder fs/ls m ode ................. 38 t able 6.4 - dc c haracteristics of usb s ignals u nder hs m ode ...................... 39
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 9 chapter 1 general description GL850 is a 4-port standard universal serial bus (usb) hub controller complies with universal serial bus specification revision 2.0 . GL850 can be connected to an usb1.1 host/hub or an usb2.0 host/hub. when GL850 is connected to an usb1.1 host/hub, it works just like an usb1.1 hub; the upstream port will operate in full-speed (fs) and the downstr eam port can operate in full-speed or low-speed (ls). when GL850 is connected to an usb2.0 host/hub, it works as an usb2.0 hub; the upstream port will operate in high-speed (hs) and the downstream port can operate in high-speed, full-speed, or low-speed. the bandwidths of high speed, full speed, and low speed are 480 mbps, 12 mbps, and 1.5 mbps respectively. GL850 embeds an 8-bit risc processor to manipulate the control/status registers and responds to the requests from usb host. firmware of GL850 will control its general purp ose i/o (gpio) to access the external eeprom and then respond to the host the customized pid and vid configured in the external eeprom. GL850 responds to the host the default settings in the internal rom if there exists no external eeprom. GL850 is designed for customers with much flexibility. cu stomers can easily design GL850 as 4-port self/bus powered, individual/ganged mode, by setting the i/o pins of GL850 (ref. to chapter 5). the more complicated settings such as pid, vid, and number of downstream ports settings are easily achieved by programming the external eeprom. tt (transaction translator) is the main traffic control engi ne in an usb2.0 hub to handle the unbalanced traffic speed between the upstream port and the downstream ports. GL850 adopts single tt architecture, which shares the same tt buffer for all downstream devices. each downstream port of GL850 supports two-color (green/amber) status leds to indicate normal/abnormal status. the downstream ports of GL850 can be configured as individual mode or gang mode (4 ports as a group) for power management. gang mode is very helpful for cost consideration, since we can use one poly-fuse, but not expensive power switch chips, to detect over current. GL850 passes the current requirement (< 2.5ma) for bus-power mode when being suspended. the current consumption is smaller than 100ma fo r the GL850 silicon itself. the abov e requirements are necessary for a 4-port bus power hub. under adequate pcb designing, GL850 provide a good choice for customers as a 4-port bus powered hub. besides, GL850 can switch automatically between self-power mode and bus-power mode without re-plugging into the pc host. the slew rate contro l circuits and the power fail detection circuits inside this chip give better esd and emi abilities to GL850. GL850 is designed mainly for stand-alone hub. it can also be integrated into pc motherboard or any other compound devices to support usb hub function.
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 10 chapter 2 features ? compliant to usb specification revision 2.0 ? 4 downstream ports ? upstream port supports both high-speed (hs) and full-speed (fs) traffic ? downstream ports support hs, fs, and low-speed (ls) traffic ? 1 control pipe (endpoint 0, 64-byte data payload) and 1 interrupt pipe (endpoint 1, 1-byte data payload) ? backward compatible to usb specification revision 1.1 ? on-chip 8-bit micro-processor ? risc-like architecture ? usb optimized instruction set ? dual cycle instruction execution ? performance: 6 mips @ 12mhz ? with 64-byte ram and 2k internal rom ? support customized pid, vid by reading external eeprom ? support downstream port configuration by reading external eeprom ? single transaction transl ator (tt) architecture ? single tt shares the same tt control logics for a ll downstream port devices. this is the most cost effective solution for tt ? each downstream port supports two-color status indicator, with automatic and manual modes compliant to usb specification revision 2.0 ? support both individual and gang modes of power management and over-current detection for downstream ports ? conform to bus power requirements ? automatic switching between self-powered and bus-powered modes ? integrated usb2.0 transceiver ? 0.35um cmos technology ? pll embedded with external 12 mhz crystal ? operate on 3.3 volts ? improved output drivers with slew-rate control for emi reduction ? internal power-fail detection for esd recovery ? 64-pin lqfp package ? applications: ? stand-alone usb hub ? pc motherboard usb hub, ducking of notebook ? any compound device to support usb hub function
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 11 chapter 3 pin assignment 3.1 pinouts GL850 lqfp - 64 pwren1# 57 dgnd 58 dvdd 59 green1 60 amber1 61 agnd 62 avdd 63 avdd 64 amber2 49 pself 50 dgnd 51 dvdd 52 pgang/suspnd 53 ovcur2# 54 pwren2# 55 ovcur1# 56 25 24 23 22 21 20 19 18 17 32 31 30 29 28 27 26 6 dmh3 dm3 agnd avdd xtal2 xtal1 agnd avdd rref dph4 dmh4 dm4 agnd avdd dp3 dph3 rpu 7 dm1 8 dmh1 9 dph1 10 dp1 11 avdd 12 agnd 13 dm2 14 dmh2 15 dph2 16 dp2 5 dpf0 4 dph0 3 dmh0 2 dmf0 1 agnd 43 pwren3# 42 ovcur3# 41 pwren4# 40 ovcur4# 39 test 38 reset# 37 dvdd 36 dgnd 35 amber4 34 green4 33 dp4 44 green3 45 amber3 46 dgnd 47 dvdd 48 green2 figure 3.1 - pinout diagram
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 12 3.2 pin list table 3.1 - pin list pin# pin name type pin# pin name type pin# pin name type pin# pin name type 1 agnd p 17 rref b 33 dp4 b 49 amber2 o 2 dmf0 b 18 avdd p 34 green4 b 50 pself i 3 dmh0 b 19 agnd p 35 amber4 o 51 dgnd p 4 dph0 b 20 xtal1 i 36 dgnd p 52 dvdd p 5 dpf0 b 21 xtal2 o 37 dvdd p 53 pgang/ suspnd b 6 rpu b 22 avdd p 38 reset# i 54 ovcur2# i 7 dm1 b 23 agnd p 39 test i 55 pwren2# o 8 dmh1 b 24 dm3 b 40 ovcur4# i 56 ovcur1# i 9 dph1 b 25 dmh3 p 41 pwren4# o 57 pwren1# o 10 dp1 b 26 dph3 p 42 ovcur3# i 58 dgnd p 11 avdd p 27 dp3 b 43 pwren3# o 59 dvdd p 12 agnd p 28 avdd p 44 green3 b 60 green1 o 13 dm2 b 29 agnd p 45 amber3 o 61 amber1 o 14 dmh2 b 30 dm4 b 46 dgnd p 62 agnd p 15 dph2 b 31 dmh4 b 47 dvdd p 63 avdd p 16 dp2 b 32 dph4 b 48 green2 o 64 avdd p
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 13 3.3 pin descriptions table 3.2 - pin descriptions usb interface pin# pin name type description 2,3,4,5 dmf0,dmh0, dph0,dpf0 b usb signals for usport 7,8,9,10 dm1,dmh1, dph1,dp b usb signals for dsport1 13,14, 15,16 dm2,dmh2, dph2,dp2 b usb signals for dsport2 24,25, 26,27 dm3,dmh3, dph3,dp3 b usb signals for dsport3 30,31, 32,33 dm4,dmh4, dph4,dp4 b usb signals for dsport2 6 rpu b rpu connects 1.5k resister to 3.3v. rpu can be set to disconnected by externally resetting reset# 17 rref b a 510 resister must be connected between rref and analog ground (agnd). note: usb signals must be carefully handled in pcb routing. for detailed information, please refer to GL850 design guideline . hub interface pin# pin name type description 56,54, 42,40 ovcur1#~ ovcur4# i (pu) active low. over current indicator for dsport1~ dsport4 for gang mode, ovcur1# is the only over current flag for GL850 57,55, 43,41 pwren1#~ pwren4# o (pu) active low. power enable output for dsport1~ dsport4 for gang mode, pwren1# is the only power enable output for GL850. 60,48, 44,34 green1~ green4 o (pd) green led indicator for dsport1~dsport4 61,49, 45,35 amber1~ amber4 o (pd) amber led indicator for dsport4~dsport1 *amber[4~1] are also used to access the external eeprom. for detailed information, please refer to chapter 5. 50 pself i 0: GL850 is bus-powered. 1: GL850 is self-powered. 53 pgang/ suspnd b (pd) this pin is default put in input mode after power-on reset. individual/gang mode is strapped during this period. after the strapping period, this pin will be set to output mode, and then output high for normal mode. when GL850 is suspended, this pin will output low. *for detailed explanation, please see chapter 5 input: 0: individual, 1: gang output: 0: suspend, 1: normal
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 14 clock and reset interface pin# pin name type description 20 xtal1 i 12mhz crystal clock input. 21 xtal2 o 12mhz crystal clock output. 38 reset# i active low. external reset input, default pull high 100k . when reset# = low, whole chip is reset to the initial state. system interface pin# pin name type description 39 test i (pd) 0: normal operation. 1: chip will be put in test mode. power / ground pin# pin name type description 11,18, 22,28, 63,64 avdd p analog power input for analog circuits. 1,12,19, 23,29, 62 agnd p analog ground input for analog circuits. 37,47, 52,59 dvdd p digital power input for digital circuits. 36,46, 51,58 dgnd p digital ground input for digital circuits. note: analog circuits are quite sensitive to power and ground noise. pcb layout must take care the power routing and the ground plane. for detailed information, please refer to GL850 design guideline . notation: type o output i input b bi-directional b/i bi-directional, default input b/o bi-directional, default output p power / ground a analog so automatic output low when suspend pu internal pull up pd internal pull down odpu open drain with internal pull up
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 15 chapter 4 block diagram frtimer usport transceiver ram cpu control/status register utmi usport logic sie d+ d- gpio repeater repeater / tt routing logic dsport1 logic dsport2 logic dsport3 logic dsport4 logic dsport transceiver dsport dsport dsport 12mhz d+ d- led/ ovcur/ pwrenb d+ d- led/ ovcur/ pwrenb d+ d- led/ ovcur/ pwrenb d+ d- led/ ovcur/ pwrenb tt (transaction translator) pll x40, x10 transceiver transceiver transceiver rom figure 4.1 - block diagram
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 16 chapter 5 function description 5.1 general 5.1.1 usport transceiver usport (upstream port) transceiver is the analog ci rcuit that supports both full-speed and high-speed electrical characteristics defined in chapter 7 of usb specification revision 2.0 . usport transceiver will operate in full-speed electrical signaling when GL850 is plugged into a 1.1 host/hub. usport transceiver will operate in high-speed electrical signali ng when GL850 is plugged into a 2.0 host/hub. 5.1.2 pll (phase lock loop) GL850 contains a 40x pll and a 10x pll. pll generates the clock sources for the whole chip. the generated clocks are proven quite accurate that help in generating high speed signal without jitter. 5.1.3 frtimer this module implements hub (micro)frame timer. the (micro)frame timer is derived from the hub?s local clock and is synchronized to the host (micro)frame period by the host generated start of (micro)frame (sof). frtimer keeps tracking the host?s sof such that GL850 is always safely synchronized to the host. the functionality of frtimer is described in section 11.2 of usb specification revision 2.0 . 5.1.4 c c is the micro-processor unit of GL850. it is an 8-bit risc processor with 2k rom and 64 bytes ram. it operates at 6mips of 12mhz clock to decode th e usb command issued from host and then prepares the data to respond to the host. in addition, c can handle gpio (general pu rpose i/o) settings and reading content of eeprom to support high flexibility for cu stomers of different configurations of hub. these configurations include self/bus power mode setting, individual/gang mode setting, downstream port number setting, device removable/non-removable setting, and pid/vid setting. 5.1.5 utm (usb2.0 transceiver macrocell interface) utmi handles the low level usb protocol and signaling. it?s designed based on the intel?s utmi specification 1.01. the major functions of utmi logic are to handle the data and clock recovery, nrzi encoding/decoding, bit stuffing /de-stuffing, supporting us b2.0 test modes, and serial/parallel conversion. 5.1.6 usport logic usport implements the upstream port logic defined in section 11.6 of usb specification revision 2.0 . it mainly manipulates traffics in the upstream directi on. the main functions include the state machines of receiver and transmitter, interfaces between utmi an d sie, and traffic control to/from the repeater and tt. 5.1.7 sie (serial interface engine) sie handles the usb protocol defined in chapter 8 of usb specification revision 2.0 . it co-works with c to play the role of the hub kernel . the main functions of sie include the state machine of usb protocol flow, crc check, pid error check, and timeout chec k. unlike usb1.1, bit stuffing/de-stuffing is implemented in utmi, not in sie. 5.1.8 control/status register control/status register is the interface register betwee n hardware and firmware. this register contains the information necessary to control endpoint0 and endpoint1 pipelines. through the firmware based architecture, GL850 possesses higher flexibility to control the usb protocol easily and correctly.
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 17 5.1.9 repeater repeater logic implements the control logic defined in section 11.4 and section 11.7 of usb specification revision 2.0 . repeater controls the traffic flow when upstream port and downstream port are signaling in the same speed. in addition, repeater will generate internal resume signal whenever a wakeup event is issued under the situation that hub is globally suspended. 5.1.10 tt (transaction translator) tt implements the control logic defined in section 11.14 ~ 11.22 of usb specification revision 2.0 . tt basically handles the unbalanced traffic speed between the usport (operating in hs) and dsports (operating in fs/ls) of hub. GL850 adopts the single tt architecture to provide the most cost effective solution. single tt shares the same buffe r control module for each downstream port. 5.1.11 repeater/tt routing logic repeater and tt are the major traffic control machines in the usb2.0 hub. under situation that usport and dsport are signaling in the same spee d, repeater/tt routing logic switches the traffic channel to the repeater. under situation that usport is in the high speed signaling and dsport is in the full/low speed signaling, repeater/tt routing logic switches the traffic channel to the tt. 5.1.11.1 connected to 1.1 host/hub if an usb2.0 hub is connected to the downstream po rt of an usb1.1 host/hub, it will operate in usb1.1 mode. for an usb1.1 hub, both upstream direction traffic and downstream direction traffic are passing through repeater. that is, the repeater/tt routing logic will route the traffic channel to the repeater. usb1.1 host/hub repeater tt dsport operating in fs/ls signaling usportoperating in fs signaling traffic channel is routed to repeater figure 5.1 - operating in usb1.1 scheme
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 18 5.1.11.2 connected to usb2.0 host/hub if an usb2.0 hub is connected to an usb2.0 host/ hub, it will operate in usb2.0 mode. the upstream port signaling is in high speed with bandwidth of 480 mbps under this environment. the traffic channel will then be routed to the repeater when the device connected to the downstream port is signaling also in high speed. on the other hand, the traffic channel will then be routed to tt when the device connected to the downstream port is signaling in full/low speed. usb2.0 host/hub repeater tt usportoperating in hs signaling hs vs. fs/ls: traffic channel is routed to tt hs vs. hs: traffic channel is routed to repeater dsport operating in hs signaling dsport operating in fs/ls signaling figure 5.2 - operating in usb2.0 scheme 5.1.12 dsport logic dsport (downstream port) logic implements the control logic defined in section 11.5 of usb specification revision 2.0 . it mainly manipulates the state machine, the connection/disconnection detection, over current detection and power enable control, and the status led control of the downstream port. besides, it also output the control signals to the dsport transceiver. 5.1.13 dsport transceiver dsport transceiver is the analog circuit that supports high-speed, full-speed, and low-speed electrical characteristics defined in chapter 7 of usb specification revision 2.0 . in addition, each dsport transceiver accurately controls its own squelch level to detect the detachment a nd attachment of devices.
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 19 5.2 configuration and i/o settings 5.2.1 reset# setting when reset# is low enabled, the whole chip is put in initial state. in addition, rpu will disable the pull-up 1.5k resister to 3.3v, which causes GL850 seems to be disconnected to the host. we suggest configure reset# as following figure. vbus is the 5v input from usb cable. GL850 will always be in disconnected state when usb cable is not plugged into host, even that GL850 is powered. reseti vbus(5v) avdd(3.3v) 1.5k ohm rpu dpf0 inside GL850 on pcb c r reset# figure 5.3 - reset# (external reset) setting and application GL850 internally contains a power on reset circuit. the power on sequence is depicted in the next picture. to fully control the reset process of GL850, we suggest the reset time applied in the external reset circuit should more than that of the internal reset circuit.
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 20 P 2.7 s internal reset external reset power good voltage, 2.5~2.8v vcc(3.3v) figure 5.4 - power on sequence of GL850 5.2.2 pgang/suspnd setting to save pin count, GL850 uses the same pin to decide individual/gang mode as well as to output the suspend flag. the individual/gang mode is decided in the period of 1ms after power on reset. after that period of time, this pin is changed to output mode. GL850 outputs the suspend flag once it is globally suspended. for individual mode, a pull low resister greater than 100k should be placed. for gang mode, a pull high resister greater than 100k should be placed. in fi gure 5.6, we also de pict the suspend led indicator schematics. it should be noticed that the polarity of led must be followed, otherwise the suspend current will be over than the current limitation (2.5ma). reset# gang_ctl 1 ms input mode, strapping to decide individual or gang mode output mode, indicating GL850 is in normal mode or suspend mode figure 5.5 - timing of pgang/suspnd strapping
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 21 dvdd(3.3v) 100k ohm 100k ohm dvdd(3.3v) suspend led indicator suspend led indicator gand mode individual mode "0": individual mode "1": gang mode suspndo gang_ctl inside GL850 on pcb figure 5.6 - gang mode setting 5.2.3 self/bus power setting GL850 can operate under bus power and conform to the power consumption limitation completely (suspend current < 2.5 ma, normal operation current < 100 ma). by setting pself, GL850 can be configured as a bus-power or a self-power hub. 1: power self 0: power bus pself inside GL850 on pcb figure 5.7 - self/bus power setting
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 22 5.2.4 led connections GL850 controls the led lighting according to the flow defined in section 11.5.3 of universal serial bus specification revision2.0 . both manual mode and automatic mode are supported in GL850. when GL850 is globally suspended, GL850 will turn off the led to save power. amber/green inside GL850 on pcb dgnd led figure 5.8 - led connection 5.2.5 eeprom setting GL850 replies to host commands by the default settings in the internal rom. GL850 also offers the ability to reply to the host according to th e settings in the external eeprom( 93c46). the following table shows the configuration of 93c46. table 5.1 - 93c46 configuration 00h 01h 02h 03h 04h 05h 06h 07h 00 vid_h vid_l pid_h pid_l chksum ff port_no device removable ff ff ff ff ff ff ff ff 08 vendor length xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 10 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 18 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 20 product length xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 28 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 30 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 38 serial number length xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 40 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 48 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx note: 1. vid_h/vid_l: high/low byte of vid value 2. pid_h/pid_l: high/low byte of pid value 3. chksum: chksum must equal to vid_h + vid_l + pid_h + pid_l + 1,otherwise firmware will ignore the eeprom settings.
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 23 4. port_no: port number, value must be 1~4. 5. device removalbe: - - - port4 removable port3 removable port2 removable port1 removable - 0: device attached to this port is removable. 1: device attached to this port is non-removable. 6. vendor length: offset 08h contains the length of the vendor string. values of vendor string is contained from 09h~1fh. 7. product length: offset 20h contains the length of product string. values of product string is contained from 21h~37h. 8. serial number length: offset 38h contains the value of serial number string. values of serial number string is contained after offset 39h. the schematics between GL850 and 93c46 is depicted in the following figures: vcc nc nc gnd cs sk di do amber1 green1 amber2 pgang 93c46 dvdd figure 5.9 - schematics between GL850 and 93c46 GL850 firstly verifies the check sum after power on reset. if the check sum is correct, GL850 will take the configuration of 93c46 as part of the descriptor contents. to prevent the content of 93c46 from being over-written, amber led will be disabled when 93c46 exists. 5.3 usb protocols to behave as a standard usb2.0 hub, some protocols defined in chapter 9 and chapter 11 of universal serial bus specification revision 2.0 must be followed. we firstly classify these standard requests and hub class requests in section 6.1. descriptors are de scribed in section 6.2, which contain the detailed information for the hub.
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 24 5.3.1 host commands and hub answers an usb hub needs at least 2 endpoints to guarantee the normal operation. endpoint 0 is the default control pipe. endpoint 1 is the interrupt pipe. host gets all the information about the hub and through the control pipe. hub information like self/bus power and gang/individual mode is all replied to host via endpoint0. interrupt pipe is to report to the host the updated change of hub status (power change and over current change, for example) and the updated status change of all downstream ports (connect ch ange, suspend change, over current change, etc.). 5.3.1.1 standard requests table 5.2 - standard request list request bmrequesttype brequest wvalue windex wlength return get_descriptor (device) 10000000b 06h 0100h 0000h 0012h device descriptor (note1) get_descriptor (device_qualifier) 10000000b 06h 0600h 0000h 000ah device_qualifier descriptor (note1) get_descriptor (configuration) 10000000b 06h 0200h 0000h 0019h configuration+interface+ endpoint descriptors (note1) get_descriptor (other_speed_configur ation) 10000000b 06h 0700h 0000h 0019h other_speed_ configuration+interface+ endpoint descriptors (note1) get_descriptor (string index0) 10000000h 06h 0300h 0000h 0004h string descriptor index0 (note1) get_descriptor (string index1) 10000000h 06h 0301h 0409h 0020h string descriptor index1 (note1) get_descriptor (string index2) 10000000h 06h 0302h 0409h 002ch string descriptor index2 (note1) set_address 00000000b 05h 0000h ~ 007fh 0000h 0000h zero length packet set_configuratio n 00000000b 09h 0000h/ 0001h 0000h 0000h zero length packet get_configurati on 00000000b 08h 0000h 0000h 0001h configuration value set_interface 00000001b 0bh 0000h 0000h 0000h zero length packet set_feature (remote wakeup ability) 00000000b 03h 0001h 0000h 0000h zero length packet set_feature (endpoint0 halt) no support 00000010b 03h 0000h 0000h/ 0080h 0000h zero length packet set_feature (endpoint1 halt) 00000010b 03h 0000h 0081h 0000h zero length packet clear_feature (remote wakeup ability) 00000000b 01h 0001h 0000h 0000h zero length packet clear_feature (endpoint0 halt) no support 00000010b 01h 0000h 0000h/ 0080h 0000h zero length packet
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 25 clear_feature (endpoint1 halt) 00000010b 01h 0000h 0081h 0000h zero length packet get_interface 10000001b 0ah 0000h 0000h 0001h 00h get_status (device) 10000000b 00h 0000h 0000h 0002h device status get_status (interface) 10000001b 00h 0000h 0000h 0002h 0000h get_status (endpoint0) no support 10000010b 00h 0000h 0000h/ 0080h 0002h endpoint0 status get_status (endpoint1) 10000010b 00h 0000h 0081h 0002h endpoint1 status set_feature (test_j) 00000000b 03h 0002h 0100h 0000h zero length packet set_feature (test_k) 00000000b 03h 0002h 0200h 0000h zero length packet set_feature (test_se0_nak) 00000000b 03h 0002h 0300h 0000h zero length packet set_feature (test_packet) 00000000b 03h 0002h 0400h 0000h zero length packet set_feature (test_force_enable) 00000000b 03h 0002h 0500h 0000h zero length packet note: 1. the detailed information for these descriptors is described in section 6.2. 5.3.1.2 hub class requests table 5.3 - hub class requests list request bmrequesttype brequest wvalue windex wlength return gethubdesciptor 10100000b 06h 2900h 0000h 0009h hub descriptor (note1) gethubstatus 10100000b 00h 0000h 0000h 0004h hub status and change status getportstatus 10100011b 00h 0000h 0001h~ 0004h 0004h port status and port change status setportfeature (port_reset) 00100011b 03h 0004h 0001h~ 0004h 0000h zero length packet setportfeature (port_suspend) 00100011b 03h 0002h 0001h~ 0004h 0000h zero length packet setportfeature (port_power) 00100011b 03h 0008h 0001h~ 0004h 0000h zero length packet clearhubfeature (c_hub_over_cur rent) 00100000b 01h 0001h 0000h 0000h zero length packet clearportfeature (port_enable) 00100011b 01h 0001h 0001h~ 0004h 0000h zero length packet clearportfeature (port_suspend) 00100011b 01h 0002h 0001h~ 0004h 0000h zero length packet clearportfeature (port_power) 00100011b 01h 0008h 0001h~ 0004h 0000h zero length packet clearportfeature (port_indicator) 00100011b 01h 0016h (note2) 0000h zero length packet
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 26 clearportfeature (c_port_connecti on) 00100011b 01h 0010h 0001h~ 0004h 0000h zero length packet clearportfeature (c_port_reset) 00100011b 01h 0014h 0001h~ 0004h 0000h zero length packet clearportfeature (c_port_enable) 00100011b 01h 0011h 0001h~ 0004h 0000h zero length packet clearportfeature (c_port_suspend) 00100011b 01h 0012h 0001h~ 0004h 0000h zero length packet clearportfeature (c_port_over_cu rrent) 00100011b 01h 0013h 0001h~ 0004h 0000h zero length packet setportfeature (port_test:test_j) 00100011b 03h 0015h 0101h~ 0104h 0000h zero length packet setportfeature (port_test:test_k ) 00100011b 03h 0015h 0201h~ 0204h 0000h zero length packet setportfeature (port_test: test_se0_nak) 00100011b 03h 0015h 0301h~ 0304h 0000h zero length packet setportfeature (port_test: test_packet) 00100011b 03h 0015h 0401h~ 0404h 0000h zero length packet setportfeature (port_test: test_force_enab le) 00100011b 03h 0015h 0501h~ 0504h 0000h zero length packet setportfeature (port_indicator) 00100011b 03h 0016h (note2) 0000h zero length packet clearttbuffer 00100011b 08h (note3) 0001h 0000h zero length packet getttstatus 10100011b 0ah 0000h 0001h 08d0h? tt state resettt 00100011b 09h 0000h 0001h 0000h zero length packet stoptt 00100011b 0bh 0000h 0001h 0000h zero length packet note: 1. hub descriptor is described in section 6.2. 2. high byte of windex is the port indicators selector code, low byte of windex is the port number. for detailed information, please refer to the section 11.24.2.13 of universal serial bus specification revision 2.0 . 3. the device address, endpoint number, and endpoin t type of the full-/low-speed endpoint that may have a busy tt buffer must be specified in the wvalue field. for detailed information, please refer to the table 11-18 of section 11.24.2.3 of universal serial bus specification revision 2.0 .
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 27 5.4 descriptors descriptors contain all the information about the usb2.0 hub. host asks different types of descriptors by different get_descriptor commands. hub will reply to different get_descriptor the associated descriptors to let host know how to configure the hub. for an usb2.0 hub, the descriptors are: device descriptor device qualifier descriptor configuration descriptor interface descriptor endpoint descriptor other speed configuration descriptor hub class-specific descriptor string descriptor descriptors replied are different between full speed and high speed for an usb2.0 hub. once an usb2.0 hub is plugged into a host/hub, it needs to firstly decide the host/hub is an usb1.1 host/hub or an usb2.0 host/hub. if the host/hub being plugged is an usb1.1 hub, GL850 replies to the host the full speed descriptors defined in section 6.2.1. otherwise, GL850 replies the high speed descriptors defined in section 6.2.2. for hub class-specific descriptor, there?s no difference between full speed and high speed. 5.4.1 full speed case 5.4.1.1 device descriptor hub returns device descriptor when get_descriptor (device) command is requested. table 5.4 - device descriptor for full speed offset field value description i/o configuration eeprom configuration 0 blength 12h 18 bytes for this descriptor - - 1 bdescriptortype 01h device descriptor type - - 2 bcdusb 0200h usb2.0 compliance - - 4 bdeviceclass 09h hub class code - - 5 bdevicesubclass 00h subclass code - - 6 bdeviceprotocol 00h protocol code - - 7 bmaxpacktsize0 40h max. packet size of endpoint0 - - 8 idvendor 05e3h vendor id of genesys logic inc. - y 10 idproduct 0660h product id of genesys logic inc. - y 12 bcddevice xxxxh version control - y 14 imanufacturer 00h index of vendor string - y 15 idproduct 01h index of product string - y 16 iserialnumber 00h index of serial number - y 17 bnumconfigurations 01h number of configuration - -
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 28 5.4.1.2 device qualifier descriptor hub returns device qualifier descriptor when get_descriptor (device_qualifier) command is issued from host. table 5.5 - device qualifier for full speed offset field value description i/o configuration eeprom configuration 0 blength 0ah 10 bytes for this descriptor - - 1 bdescriptortype 06h device qualifier descriptor type - - 2 bcdusb 0200h usb2.0 compliance - - 4 bdeviceclass 09h hub class code - - 5 bdevicesubclass 00h subclass code - - 6 bdeviceprotocol 01h single tt - - 7 bmaxpacketsize0 40h max. packet size for endpoint0 of other speed - - 8 bnumconfigurations 01h number of other speed config. - - 9 breserved 00h reserved for future use - - 5.4.1.3 configuration descriptor when host issues get_descriptor (configurat ion) command to the hub, hub will return configuration descri ptor, interface descriptor, a nd endpoint descriptor in combination to the host. table 5.6 - configuration descriptor for full speed offset field value description i/o configuration eeprom configuration 0 blength 09h 9 bytes for this descriptor - - 1 bdescriptortype 02h configuration descriptor type - - 2 wtotallength 0019h total 25 bytes - - 4 bnumberinterface 01h number of interfaces - - 5 bconfigurationvalue 01h configuration value - - 6 iconfiguration 00h index of string descriptor - - 7 bmattribute e0h can switch between self power and bus power - - 8 bmaxpower 32h max. power = 100 ma - -
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 29 5.4.1.4 interface descriptor interface descriptor follows configuration de scriptor for get_descriptor (configuration) command. table 5.7 - interface descriptor for full speed offset field value description i/o configuration eeprom configuration 0 blength 09h 9 bytes for this descriptor - - 1 bdescriptortype 04h interface descriptor type - - 2 bierfacenumber 00h interface number - - 3 balternatesetting 00h alternate setting - - 4 bnumendpoints 01h number of endpoints - - 5 binterfaceclass 09h hub class code - - 6 binterfacesubclass 00h subclass code - - 7 binterfaceprotocol 00h protocol code - - 8 iinterface 00h index of string descriptor - - 5.4.1.5 endpoint descriptor endpoint descriptor follows inte rface descriptor for get_descri ptor (configuration) command. table 5.8 - endpoint descriptor for full speed offset field value description i/o configuration eeprom configuration 0 blength 07h 7bytes for this descriptor - - 1 bdescriptortype 05h endpoint descriptor type - - 2 bepointaddress 81h address of the endpoint - - 3 battribute 03h interrupt endpoint - - 4 wmaxpacketsize 0001h max. packet size of the endpoint - - 6 binterval ffh polling interval (ms) - -
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 30 5.4.1.6 other speed configuration descriptor an usb2.0 hub returns other speed configuration descriptor for the command get_descriptor (other_speed_configuration). an usb2.0 host will issue this command when the hub plugged is an usb2.0 hub. table 5.9 - other speed configuration descriptor for full speed offset field value description i/o configuration eeprom configuration 0 blength 09h 9 bytes for this descriptor - - 1 bdescriptortype 07h other speed descriptor type - - 2 wtotallength 19h total 25 bytes - - 4 bnumberinterface 01h number of interfaces - - 5 bconfigurationvalue 01h configuration value - - 6 iconfiguration 00h index of string descriptor - - 7 bmattribute e0h can switch between self power and bus power - - 8 bmaxpower 32h max. power = 100 ma - - 5.4.1.7 interface descriptor combined with other speed configuration descriptor other speed interface descriptor is in combination after other speed configuration descriptor for the command get_descriptor (other_speed_configuration). table 5.10 - other speed interface descriptor for full speed offset field value description i/o configuration eeprom configuration 0 blength 09h 9 bytes for this descriptor - - 1 bdescriptortype 04h interface descriptor type - - 2 bierfacenumber 00h interface number - - 3 balternatesetting 00h alternate setting - - 4 bnumendpoints 01h number of endpoints - - 5 binterfaceclass 09h hub class code - - 6 binterfacesubclass 00h subclass code - - 7 binterfaceprotocol 00h single tt - - 8 iinterface 00h index of string descriptor - -
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 31 5.4.1.8 endpoint descriptor combined with other speed configuration descriptor other speed endpoint descriptor is in combination af ter other speed interface de scriptor for the command get_descriptor (other_speed_configuration). table 5.11 - other speed endpoint descriptor for full speed offset field value description i/o configuration eeprom configuration 0 blength 07h 7bytes for this descriptor - - 1 bdescriptortype 05h endpoint descriptor type - - 2 bepointaddress 81h address of the endpoint - - 3 battribute 03h interrupt endpoint - - 4 wmaxpacketsize 0001h max. packet size of the endpoint - - 6 binterval 0ch polling interval = (2 12 -1) x 125 us - - 5.4.1.9 string descriptor string descriptor is replied for the command get_descriptor (string). generally, one string contains the information for manufacturer and the ot her contains the information for the product. these strings can be configured in eerpom. GL850 will read the data in the eeprom to respond to the host. the information in the following table are the default settings of genesys logic inc. table 5.12 - string index0 for full speed offset field value description i/o configuration eeprom configuration 0 blength 04h 4 bytes for this descriptor - - 1 bdescriptortype 03h string descriptor type - - 2 wlangid 0409 language : english - - table 5.13 - string index1 for full speed offset field value description i/o configuration eeprom configuration 0 blength 16h 16 bytes for this descriptor - y 1 bdescriptortype 03h string descriptor type - y 2 bstring unicode encoded manufacture string-usb2.0 hub as default setting - y
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 32 table 5.14 - string index2 for full speed offset field value description i/o configuration eeprom configuration 0 blength xxh x bytes for this descriptor - y 1 bdescriptortype 03h string descriptor type - y 2 bstring unicode encoded product string ? no default setting - y 5.4.2 high speed case 5.4.2.1 device descriptor high speed device descriptor is replied when hub is operated in high speed mode. the content of high speed device descriptor is almost the same as full speed device descriptor, except the bdeviceprotocol value is 01h, which means GL850 is a single tt hub. table 5.15 - device descriptor for high speed offset field value description i/o configuration eeprom configuration 0 blength 12h 18 bytes for this descriptor - - 1 bdescriptortype 01h device descriptor type - - 2 bcdusb 0200h usb2.0 compliance - - 4 bdeviceclass 09h hub class code - 5 bdevicesubclass 00h subclass code - 6 bdeviceprotocol 01h single tt - 7 bmaxpacktsize0 40h max. packet size of endpoint0 - 8 idvendor 05e3h vendor id of genesys logic inc. y 10 idproduct 0660h product id of genesys logic inc. y 12 bcddevice xxxxh version control y 14 imanufacturer 00h index of vendor string y 15 idproduct 01h index of product string - y 16 iserialnumber 00h index of serial number - y 17 bnumconfigurations 01h number of configuration - -
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 33 5.4.2.2 device qualifier descriptor high sped device qualifier descriptor contains al most the same information as the full speed device qualifier descriptor, except that bdeviceprotocol value is 00h. table 5.16 - device qualifier for high speed offset field value description i/o configuration eeprom configuration 0 blength 0ah 10 bytes for this descriptor - - 1 bdescriptortype 06h device qualifier descriptor type - - 2 bcdusb 0200h usb2.0 compliance - - 4 bdeviceclass 09h hub class code - - 5 bdevicesubclass 00h subclass code - - 6 bdeviceprotocol 00h protocol code - - 7 bmaxpacketsize0 40h max. packet size for endpoint0 of other speed - - 8 bnumconfigurations 01h number of other speed config. - - 9 breserved 00h reserved for future use - - 5.4.2.3 configuration descriptor information contained in high speed configuration descriptor is the same as full speed configuration descriptor. table 5.17 - configuration descriptor for high speed offset field value description i/o configuration eeprom configuration 0 blength 09h 9 bytes for this descriptor - - 1 bdescriptortype 02h configuration descriptor type - - 2 wtotallength 0019h total 25 bytes - - 4 bnumberinterface 01h number of interfaces - - 5 bconfigurationvalue 01h configuration value - - 6 iconfiguration 00h index of string descriptor - - 7 bmattribute e0h can switch between self power and bus power - - 8 bmaxpower 32h max. power = 100 ma - -
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 34 5.4.2.4 interface descriptor interface descriptor follows configuration de scriptor for get_descriptor (configuration) command. table 5.18 - interface descriptor for high speed offset field value description i/o configuratio n eeprom configuratio n 0 blength 09h 9 bytes for this descriptor - - 1 bdescriptortype 04h interface descriptor type - - 2 bierfacenumber 00h interface number - - 3 balternatesetting 00h alternate setting - - 4 bnumendpoints 01h number of endpoints - - 5 binterfaceclass 09h hub class code - - 6 binterfacesubclass 00h subclass code - - 7 binterfaceprotocol 00h single tt - - 8 iinterface 00h index of string descriptor - - 5.4.2.5 endpoint descriptor in configuration descriptor binterval of high speed interface descriptor is 0ch, wh ich is different from that of full speed endpoint descriptor. table 5.19 - endpoint descriptor for high speed offset field value description i/o configuration eeprom configuration 0 blength 07h 7bytes for this descriptor - - 1 bdescriptortype 05h endpoint descriptor type - - 2 bepointaddress 81h address of the endpoint - - 3 battribute 03h interrupt endpoint - - 4 wmaxpacketsize 01h max. packet size of the endpoint - - 6 binterval 0ch polling interval = (2 12 -1) x 125 us - -
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 35 5.4.2.6 other speed configuration descriptor values in all the field of high speed other speed configuration descriptor are the same as those of full speed other speed configuration descriptor. table 5.20 - other speed configuration descriptor for hihg speed offset field value description i/o configuration eeprom configuration 0 blength 09h 9 bytes for this descriptor - - 1 bdescriptortype 07h other speed descriptor type - - 2 wtotallength 19h total 25 bytes - - 4 bnumberinterface 01h number of interfaces - - 5 bconfigurationvalue 01h configuration value - - 6 iconfiguration 00h index of string descriptor - - 7 bmattribute e0h can switch between self power and bus power - - 8 bmaxpower 32h max. power = 100 ma - - 5.4.2.7 interface descriptor in other speed configuration descriptor all the values in this descriptor are the same as those in other speed interface descriptor for full speed. table 5.21 - other speed interface descriptor for high speed offset field value description i/o configuration eeprom configuration 0 blength 09h 9 bytes for this descriptor - - 1 bdescriptortype 04h interface descriptor type - - 2 bierfacenumber 00h interface number - - 3 balternatesetting 00h alternate setting - - 4 bnumendpoints 01h number of endpoints - - 5 binterfaceclass 09h hub class code - - 6 binterfacesubclass 00h subclass code - - 7 binterfaceprotocol 00h protocol code - - 8 iinterface 00h index of string descriptor - -
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 36 5.4.2.8 endpoint descriptor in other speed configuration descriptor table 5.22 - other speed endpoint descriptor for high speed offset field value description i/o configuration eeprom configuration 0 blength 07h 7bytes for this descriptor - - 1 bdescriptortype 05h endpoint descriptor type - - 2 bepointaddress 81h address of the endpoint - - 4 battribute 03h interrupt endpoint - - 5 wmaxpacketsize 01h max. packet size of the endpoint - - 6 binterval ffh polling interval (ms) - - 5.4.2.9 string descriptor all the values of all the string descriptors for high speed are the same as those for full speed. table 5.23 - string index0 for high speed offset field value description i/o configuration eeprom configuration 0 blength 04h 4 bytes for this descriptor - - 1 bdescriptortype 03h string descriptor type - - 2 wlangid 0409 language : english - - table 5.24 - string index1 for high speed offset field value description i/o configuration eeprom configuration 0 blength 16h 16 bytes for this descriptor - y 1 bdescriptortype 03h string descriptor type - y 2 bstring unicode encoded manufacture string - usb2.0 hub as default setting - y table 5.25 - string index2 for high speed offset field value description i/o configuration eeprom configuration 0 blength xxh x bytes for this descriptor - y 1 bdescriptortype 03h string descriptor type - y 2 bstring unicode encoded product string ? no default setting - y
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 37 5.4.3 hub class descriptor hub class descriptor is replied to the host fo r the get_descriptor (hub) command. there?s no difference in the content fo r full speed and high speed. table 5.26 - hub class descriptor offset field value description i/o configuration eeprom configuration 0 blength 09h 9 bytes for this descriptor - - 1 bdescriptortype 29h hub descriptor type - - 2 bnbrports 04h number of ports - - 4 whubcharacteristics 89h 80h individual mode gang mode y - 5 bpwron2pwrgood 32h time from power on to power good (2 ms) - - 6 bhubcontrcurrent 64h maximum current (ma) - - 7 bdeviceremoveable 00h all devices are removable - - 8 bportpwrctrlmask ffh for compatible to usb1.0 - -
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 38 chapter 6 electrical characteristics 6.1 maximum ratings table 6.1 - maximum ratings symbol parameter min. max. unit v cc power supply -0.5 +3.6 v v in input voltage -0.5 5 v v out output voltage -0.5 +3.6 v t a ambient temperature under bias -60 +100 o c f osc frequency 12 mhz 100ppm 6.2 dc characteristics table 6.2 - dc characteristics except usb signals symbol parameter min. typ. max. unit p d power dissipation ma v dd power supply voltage 3 3.3 3.6 v v il low level input voltage 0.9 v v ih high level input voltage 2.0 v v tlh low to high threshold voltage 1.36 1.48 1.62 v v thl high to low threshold voltage 1.36 1.48 1.62 v v ol low level output voltage when i ol =8ma 0.4 v v oh high level output voltage when i oh =8ma 2.4 v i olk leakage current for pads with internal pull up or pull down resistor 30 a r dn pad internal pull down resister 81k 103k 181k ? r up pad internal pull up resister 81k 103k 181k ? table 6.3 - dc characteristics of usb signals under fs/ls mode symbol parameter min. typ. max. unit v ol dpf/dmf static output low(r l of 1.5k to 3.6v ) 0.3 v v oh dpf/dmf static output high (r l of 15k to gnd ) 2.8 3.6 v v di differential input sensitivity 0.2 v v cm differential common mode range 0.8 2.5 v v se single-ended receiver threshold 0.2 v c in transceiver capacitance 20 pf i lo hi-z state data line leakage -10 +10 a z drv driver output resistance 28 43 ?
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 39 table 6.4 - dc characteristics of usb signals under hs mode symbol parameter min. typ. max. unit v il low-level input voltage with hs termination resistor enabled, pull-up resistor disconnected mv v ih high-level input voltage with hs termination resistor enabled, pull-up resistor disconnected mv v il low-level input voltage with hs termination resistor enabled, pull-up resistor connected mv v ih high-level input voltage with hs termination resistor enabled, pull-up resistor connected mv v ol dph/dmh static output low(r l of 1.5k to 3.6v ) 0.3 v v oh dph/dmh static output high (r l of 15k to gnd ) 2.8 3.6 v c in transceiver capacitance 20 pf i lo hi-z state data line leakage -10 +10 a z drv driver output resistance for usb2.0 hs ?
GL850 usb 2.0 4-port hub controller ?2000-2003 genesys logic inc.?all rights reserved. page 40 chapter 7 package dimension 16 control dimensions are in mi lli meter s. sy mbol millimeter inch min. nom. max. max. min. nom. a a1 a2 d d1 e e1 r2 r1 c l l1 s b e aaa bbb ccc ddd d2 e2 tolerances of form and position 12.00 basic 12.00 basic 10.00 basic 10.00 basic 0.472 basic 0.472 basic 0.393 basic 0.393 basic 0.05 1.35 1.40 1.60 0.15 1.45 0 0 11 11 3.5 12 12 7 13 13 0.08 0.08 0.20 0.003 0.003 0.008 0 0 11 11 3.5 12 12 7 13 13 0.063 0.006 0.057 0.055 0.002 0.053 0.20 0.20 0.08 0.08 0.008 0.008 0.003 0.003 0.50 basic 7.50 basic 7.50 basic 0.020 basic 0.295 basic 0.295 basic 1.00 ref 0.039 ref 0.09 0.45 0.20 0.17 0.60 0.20 0.20 0.75 0.27 0.004 0.018 0.008 0.007 0.024 0.008 0.008 0.030 0.011 0 - 0 2 - 0 3 - 0 1 - not e s : 1. 2. di m e nsi ons d1 and e 1 do not i ncl ude m ol d prot rusi on. al l owabl e prot rusi on i s 0.25 mm pe r si de . d1 and e 1 are m axi mum pl ast i c body si z e di m e nsi ons i ncl udi ng mol d mi sm at ch. di m e nsi on b doe s not i ncl ude dambar prot rusi on. al l owabl e dam bar prot rusi on shal l not cause t he l e ad wi dt h t o e xce e d t he maxi mum b di me nsi on by more t han 0.08mm. dambar can not be l ocat e d on t he l owe r radi us or t he foot . mi ni mum space be t we e n prot rusi on and an adjace nt l e ad i s 0.07mm. se at i ng pl ane e b 4x 4x 64 1 17 32 33 48 49 gage pl ane r1 r2 0.25mm sl 0 3 - 0 2 - h e e 1 e 2 a abd c aaa b ad h bbb ddd m c b as s d b d1 d2 d d a a2 a1 0 . 0 5 s l 1 c 0 1 - 0 - c c ccc figure 7.1 - GL850 64 pin lqfp package

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