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RTL8152B-VB-CG integrated 10/100m ethernet controller for usb applications datasheet (confidential: development partners only) rev. 1.0 21 march 2013 track id: jatr-8275-15 realtek semiconductor corp. no. 2, innovation road ii, hsinchu science park, hsinchu 300, taiwan tel.: +886-3-578-0211. fax: +886-3-577-6047 www.realtek.com
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications ii track id: jatr-8275-15 rev. 1.0 copyright ?2013 realtek semiconductor corp. all rights reserve d. no part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means without the written permission of realtek semiconductor corp. disclaimer realtek provides this document ?as is?, without warranty of any kind. realtek may make improvements and/or changes in this document or in the product de scribed in this document at any time. this document could include technical inaccura cies or typographical errors. trademarks realtek is a trademark of realtek semiconductor cor poration. other names mentioned in this document are trademarks/registered trademarks of their respective owners. license this product is covered by one or more of the following patents: us5,307,459, us5,434,872, us5,732,094, us6,570,884, us 6,115,776, and us6,327,625. using this document this document is intended for the software engin eer?s reference and provides detailed programming information. though every effort has been made to ensure that th is document is current and accurate, more information may have become available subsequent to the production of this guide. revision history revision release date summary 1.0 2013/03/21 first release.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications iii track id: jatr-8275-15 rev. 1.0 table of contents 1. general desc ription ............................................................................................................ ..................................1 2. features ....................................................................................................................... ..................................................3 3. system applications............................................................................................................ ...................................3 4. pin assignments ................................................................................................................ .........................................3 4.1. p ackage i dentification ............................................................................................................................... ............3 5. pin descriptions............................................................................................................... ..........................................4 5.1. p ower m anagement p in ............................................................................................................................... ...........4 5.2. usb i nterface p ins ............................................................................................................................... ...................4 5.3. t ransceiver i nterface p ins ............................................................................................................................... .....4 5.4. c lock p ins ............................................................................................................................... ..................................5 5.5. ldo r egulator and r eference p ins .....................................................................................................................5 5.6. spi f lash p ins ............................................................................................................................... ............................5 5.7. led p ins ............................................................................................................................... ......................................6 5.8. p ower and g round p ins ............................................................................................................................... ...........6 5.9. gpio p in ............................................................................................................................... ......................................6 6. functional description......................................................................................................... ..............................7 6.1. usb i nterface ............................................................................................................................... ...........................7 6.1.1. usb config urations............................................................................................................. ...................................7 6.1.2. endpoint 0 ..................................................................................................................... .........................................7 6.1.3. endpoint 1 bulk-in............................................................................................................. ....................................7 6.1.4. endpoint 2 bulk-out............................................................................................................ .................................7 6.1.5. endpoint 3 interrupt-in........................................................................................................ ..................................7 6.2. c ustomizable led c onfiguration ........................................................................................................................8 6.2.1. led blinking freq uency control................................................................................................. ..........................9 6.3. phy t ransceiver ............................................................................................................................... ....................10 6.3.1. phy transmitter................................................................................................................ ...................................10 6.3.2. phy r eceiver ................................................................................................................... ....................................10 6.3.3. link down power saving mode .................................................................................................... .......................10 6.4. spi f lash ............................................................................................................................... ...................................11 6.5. e nergy e fficient e thernet (eee)........................................................................................................................11 6.6. l ink p ower m anagement (lpm) .......................................................................................................................... 11 6.7. lan d isable m ode ............................................................................................................................... ..................12 6.8. p ower m anagement ............................................................................................................................... ................12 6.9. p rotocol o ffload ............................................................................................................................... ..................13 6.10. xtal-l ess w ake -o n -lan........................................................................................................................... .........13 6.11. w ake p acket d etection (wpd) .......................................................................................................................... .14 6.12. ?r eal w o w!? (w ake -o n -wan) t echnology ......................................................................................................14 6.13. a lways o n a lways c onnected ...........................................................................................................................14 7. ldo regulator .................................................................................................................. .......................................14 8. characteristics................................................................................................................ ......................................15 8.1. a bsolute m aximum r atings ............................................................................................................................... .15 8.2. r ecommended o perating c onditions .................................................................................................................15 8.3. c rystal r equirements ............................................................................................................................... ...........16 8.4. o scillator r equirements ............................................................................................................................... .....16 8.5. e nvironmental c haracteristics ........................................................................................................................16 8.6. dc c haracteristics ............................................................................................................................... ................17 8.7. r eflow p rofile r ecommendations .....................................................................................................................17
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications iv track id: jatr-8275-15 rev. 1.0 8.8. ac c haracteristics ............................................................................................................................... ................18 8.8.1. spi flash commands ............................................................................................................. ..............................18 8.8.2. spi flash interface timing sequences ........................................................................................... ......................18 8.8.3. spi flash type suppo rted ....................................................................................................... .............................20 9. mechanical dimensions.......................................................................................................... ............................21 10. ordering information ........................................................................................................... ........................22 list of tables t able 1. p ower m anagement p in ............................................................................................................................... ............4 t able 2. usb i nterface p ins ............................................................................................................................... ....................4 t able 3. t ransceiver i nterface p ins ............................................................................................................................... .....4 t able 4. c lock p ins ............................................................................................................................... ...................................5 t able 5. ldo r egulator and r eference p ins .....................................................................................................................5 t able 6. spi f lash p ins ............................................................................................................................... .............................5 t able 7. led p ins ............................................................................................................................... .......................................6 t able 8. p ower and g round p ins ............................................................................................................................... ............6 t able 9. gpio p in ............................................................................................................................... .......................................6 t able 10. led s elect ............................................................................................................................... .................................8 t able 11. c ustomized led s ............................................................................................................................... ......................8 t able 12. led f eature c ontrol -1............................................................................................................................. .............8 t able 13. led f eature c ontrol -2............................................................................................................................. .............8 t able 14. led o ption 1 & o ption 2 s ettings .........................................................................................................................9 t able 15. led b linking f requency c ontrol ........................................................................................................................9 t able 16. spi f lash i nterface ............................................................................................................................... ................11 t able 17. a bsolute m aximum r atings ............................................................................................................................... .15 t able 18. r ecommended o perating c onditions .................................................................................................................15 t able 19. c rystal r equirements ............................................................................................................................... ...........16 t able 20. o scillator r equirements ............................................................................................................................... .....16 t able 21. e nvironmental c haracteristics ........................................................................................................................16 t able 22. dc c haracteristics ............................................................................................................................... ................17 t able 23. r eflow p rofile r ecommendations .....................................................................................................................17 t able 24. spi f lash c ommands ............................................................................................................................... ...............18 t able 25. spi f lash t ype s upported ............................................................................................................................... ......20 t able 26. o rdering i nformation ............................................................................................................................... ...........22 list of figures f igure 1. p in a ssignments ............................................................................................................................... ........................3 f igure 2. led b linking f requency and d uty c ycle ..........................................................................................................9 f igure 3. wren/wrdi t iming s equence ............................................................................................................................18 f igure 4. r ead t iming s equence ............................................................................................................................... ...........18 f igure 5. p age p rogram t iming s equence ..........................................................................................................................19 f igure 6. s ector /b lock e rase t iming s equence ...............................................................................................................19 f igure 7. c hip e rase t iming s equence ............................................................................................................................... .19
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 1 track id: jatr-8275-15 rev. 1.0 1. general description the realtek RTL8152B-VB-CG 10/ 100m ethernet controller comb ines an ieee 802.3u compliant media access controller (mac), usb bus controll er, and embedded memory. a linear regulator (ldo) is incorporated for reduced bom cost. with state-of-the-art dsp technology and mixe d-mode signal technology, the rtl8152b-vb offers high-speed transmission over cat 5 utp cable or cat 3 utp (10mbps only) cable. functions such as crossover detection and auto-co rrection, polarity correction, adap tive equalization, cross-talk cancellation, echo cancellation, timing recovery, and error correction are implemented to provide robust transmission and reception capabilities. the rtl 8152b-vb features embedded one-time-programmable (otp) memory. advanced configuration power management in terface (acpi)?power mana gement for modern operating systems that are capable of operati ng system-directed power management (ospm)?is supported to achieve the most efficient power manage ment possible. in addition to the acpi feature, remote wake-up (including amd magi c packet and microsoft wake-up frame) is supported in both acpi and apm (advanced power management) environments. the rtl8152b-vb supports microsoft wake packet detection (wpd) to provide wake-up frame information to the os, e.g., patternid, originalpack etsize, savedpacketsize, savedpacketoffset, etc. wpd helps prevent unwanted/unauthori zed wake-up of a sleeping computer. the rtl8152b-vb supports ?realwow!? technology that enables remote wake-up of a sleeping pc through the internet. this feature allows pcs to reduce power consumption by remaining in low power sleeping state until needed. note: the ?realwow!? service requir es registration on first time use. the rtl8152b-vb is fully compliant with microsoft ndis5, ndis6 (ipv4, ipv6, tcp, udp) checksum features, and supports ieee 802 ip laye r 2 priority encoding and ieee 802.1q virtual bridged local area network (vlan). the above f eatures contribute to lowering cpu utilization, especially benefiting performance when in operation on a network server. the rtl8152b-vb supports protocol offload. it offloads some of th e most common protocols to nic hardware in order to prevent spurious wake -up and further reduce power consumption. the rtl8152b-vb can offload arp (ipv4) and ns (ipv6) pr otocols while in the d3 power saving state.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 2 track id: jatr-8275-15 rev. 1.0 the rtl8152b-vb supports the ecma (european co mputer manufacturers a ssociation) proxy for sleeping hosts standard. the standa rd specifies maintenance of netw ork connectivity and presence via proxies in order to extend the sleep duration of higher-powered hosts. it handles some network tasks on behalf of the host, allowing the host to remain in sleep mode for longer pe riods. required and optional behavior of an operating proxy includ es generating reply packets, ignori ng packets, and waking the host. the rtl8152b-vb supports ieee 802.3az-2010, also known as energy efficient ethernet (eee). ieee 802.3az operates with the ieee 802.3 media access cont rol (mac) sublayer to support operation in low power idle mode. when the ethernet network is in low link utilization, eee allows systems on both sides of the link to save power. the device also features usb 2.0 technology. it provi des higher bandwidth and improved protocols for data exchange between the host an d the device. in addition, usb 2.0 offers a more aggressive power management feature that enables se lective suspend to save energy. the rtl8152b-vb is suitable for multiple market segm ents and emerging applications, such as desktop, mobile, workstation, server, communications platfo rms, docking station, and embedded applications.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 3 track id: jatr-8275-15 rev. 1.0 2. features hardware ? integrated 10/100m transceiver ? auto-negotiation with next page capability ? supports usb 2.0 and 1.1 ? supports pair swap/polarity/skew correction ? crossover detection & auto-correction ? supports wake-on-lan and ?realwow!? (wake-on-wan) technology (see note 1) ? supports ecma-393 ecma proxzzzy standard for sleeping hosts (see note 1) ? xtal-less wake-on-lan ? supports 25mhz or 48mhz external clock (from oscillator or system clock source) ? supports power down/link down power saving ? transmit/receive on-chip buffer support ? embedded otp memory ? built-in linear regulator (ldo) ? supports customizable leds ? controllable led blinking frequency and duty cycle ? supports hardware crc (cyclic redundancy check) function ? lan disable with gpio pin ? supports lpm (link power management) ? spi flash interface ? supports cdc-ecm ? 24-pin qfn ?green? package software offload ? microsoft ndis5, ndis6 checksum offload (ipv4, ipv6, tcp, udp) and segmentation task-offload (large send v1 and large send v2) support ieee ? supports full duplex flow control (ieee 802.3x) ? fully compliant with ieee 802.3, ieee 802.3u ? supports ieee 802.1p layer 2 priority encoding ? supports ieee 802.1q vlan tagging ? supports ieee 802.3az-2010 (eee) microsoft aoac (always on always connected) ? supports 16-set 128- byte wake-up frame pattern exact matching ? supports link change wake up ? supports microsoft wpd (wake packet detection) ? supports protocol offload (arp & ns) intel cppm (converged platform power management) ? supports l1 with 3ms besl ? supports selective suspend note 1. select between realwow! or ecma, only one feature can be active at a time.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 3 track id: jatr-8275-15 rev. 1.0 3. system applications ? usb 10/100m ethernet on mother board, dongle, notebook, docking station, or embedded system 4. pin assignments figure 1. pin assignments 4.1. package identification green package is indicated by the ?g? in gxxxv (f igure 1). the version num ber is shown in the location marked ?v?.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 4 track id: jatr-8275-15 rev. 1.0 5. pin descriptions the signal type codes below are used in the following tables: i: input o: output p: power 5.1. power management pin table 1. power management pin symbol type pin no description lanwakeb o 19 power management event output pin (active low), minimum 7ms, maximum 9ms. 5.2. usb interface pins table 2. usb interface pins symbol type pin no description u2dp io 8 u2dm io 7 usb 2.0/usb 1.1 differential signal pair. 5.3. transceiver interface pins table 3. transceiver interface pins symbol type pin no description mdip0 io 2 mdin0 io 3 in mdi mode, this pair acts as the bi_ da+/- pair, and is the transmit pair in 10base-t and 100base-tx. in mdi crossover mode, this pair acts as the bi_db+/- pair, and is the receive pair in 10base-t and 100base-tx. mdip1 io 4 mdin1 io 5 in mdi mode, this pair acts as the bi_d b+/- pair, and is the receive pair in 10base-t and 100base-tx. in mdi crossover mode, this pair acts as the bi_da+/- pair, and is the transmit pair in 10base-t and 100base-tx.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 5 track id: jatr-8275-15 rev. 1.0 5.4. clock pins table 4. clock pins symbol type pin no description ckxtal1 i 21 input of 25mhz clock reference. ckxtal2 io 22 output of 25mhz clock reference. input of 25mhz or 48mhz external clock source. xtaldet/spisdi i 18 power-up strapping pin. pull high: 25mhz clock source pull low: 48mhz clock source note: when a 25mhz clock is used the xtaldet pin must be pulled high by a resistor during power-up. when a 48mhz clock is used the xtaldet pin must be pulled low by a resistor during power-up. 5.5. ldo regulator and reference pins table 5. ldo regulator and reference pins symbol type pin no description avdd33 p 10 linear regulator (ldo) 3.3v output. note: the embedded ldo is designed for rtl8152b-vb internal use only. do not provide this power source to other devices. avdd10 p 23 linear regulator (ldo) 1.05v output. note: the embedded ldo is designed for rtl8152b-vb internal use only. do not provide this power source to other devices. dvdd10_ups p 12 linear regulator (ldo) 1.05v output. note: the embedded ldo is designed for rtl8152b-vb internal use only. do not provide this power source to other devices. rset i 24 reference. external resistor reference. 5.6. spi flash pins table 6. spi flash pins symbol type pin no description spicsb o 15 spi flash chip select. spisdo i 20 input from spi flas h serial data output pin. spisdi/xtaldet o 18 output to spi flash serial data input pin. spisck o 17 spi flash serial data clock.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 6 track id: jatr-8275-15 rev. 1.0 5.7. led pins table 7. led pins symbol type pin no description led0 o 15 led1 o 17 see section 6.2 customizable led configuration, page 8 for details. note: during power down mode, the led signals are logic high. 5.8. power and ground pins table 8. power and ground pins symbol type pin no description vdd5 p 11 analog 5.0v power supply. avdd33 p 1, 10 analog 3.3v power supply. dvdd33 p 13 digital 3.3v power supply. avdd10 p 23 analog 1.05v power supply. dvdd10 p 16 digital 1.05v power supply. dvdd10_ups p 12 digital 1.05v uninterruptible power supply. u2vdd10 p 9 usb 2.0/usb 1.1 digital 1.05v power supply. u2gnd p 6 usb 2.0/usb 1.1 ground. gnd p 25 ground (exposed pad). note: refer to the latest schematic circuit for correct configuration. 5.9. gpio pin table 9. gpio pin symbol type pin no description gpio io 14 general purpose input/output pin. link ok feature: output pin (active high) power saving feature: output pin (active low) lan disable mode: input pin (active low)
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 7 track id: jatr-8275-15 rev. 1.0 6. functional description 6.1. usb interface the sie (serial interface engine) employs a robust hardwired usb prot ocol implementation so that the entire usb interface operation can be done without firmware interven tion. for all three types of end points (bulk-in, bulk-out, and interrupt-in), appropriate respons es and handshake signals are generated by the sie. the sie analog transceiver comp lies fully with driver and receiver characteristics defined in usb specification rev. 2.0 6.1.1. usb configurations the rtl8152b-vb supports two ne tworking configurations, ecm (eth ernet networking control model) configuration, and in-house confi guration. the ecm configuration co mplies with cdc-ecm, and is a general ethernet networking model that enables network communication without installing additional vendor specific drivers. the in-hous e configuration requires a vendor sp ecific driver to support enhanced features and optimized performance. 6.1.2. endpoint 0 all usb devices support a common access mechanis m for accessing information through this control pipe. associated with the c ontrol pipe at endpoint 0 is the informa tion required to comple tely describe the usb device. this pipe also provides the re gister read and write to the rtl8152b-vb. 6.1.3. endpoint 1 bulk-in the maximum bulk-in packet size is 512 bytes. each et hernet packet is transf erred to the host by this endpoint. if the ethernet packet is larger than 512 bytes, the rtl8152b-vb splits the ethernet packet into multiples of 512 bytes. the host treats usb pack ets that are less than 512 bytes or are equal to zero as end of ethernet packets. 6.1.4. endpoint 2 bulk-out the host sends the usb packet to ethe rnet. if the ethernet p acket is larger than 512 bytes, the host will send the ethernet packet in multiples of 512 bytes. a usb packet that is less than 512 bytes or is equal to zero is treated as an end of ethernet packet. the ethernet packet (containing multiple usb packet s) will be queued in the tx fifo and transmitted when possible. if the ethernet packet is transmitted without error, the tx fifo space that was occupied by the transmitted ethernet packet will be released. if the 2k tx fifo is full, the rtl8152b-vb will respond with a nyet when the host tries to bulk-out more usb packets. it is possible to have multiple ethernet packets in th e tx fifo simultaneously. if an ethernet packet is to be transmitted but experiences collisions more than 16 times (default), this is called a transmit abort and the packet will be skipped for transmission by the rtl8152b-vb. 6.1.5. endpoint 3 interrupt-in the interrupt endpoint (ep3) can be used to poll the current link speed and link ok status of the rtl8152b-vb.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 8 track id: jatr-8275-15 rev. 1.0 6.2. customizable led configuration the rtl8152b-vb supports customizable led opera tion modes via ocp register offset 0xdd90h. table 10 describes the different led actions. table 10. led select bit symbol rw description 7:4 ledsel1 rw led select for pinled1 3:0 ledsel0 rw led select for pinled0 configure ocp register offset 0xd d90h to support your own led signals . for example, if the value in the ocp offset 0xdd90 is 0xa1h (10100001b), the led actions are: ? led 0: on only in 10m mode, with no blinking during tx/rx ? led 1: on only in 100m m ode, with tx/rx blinking table 11. customized leds link act speed link 10m link 100m - led 0 bit 0 bit 1 bit 3 led 1 bit 4 bit 5 bit 7 table 12. led feature control-1 feature control bit12 bit13 bit14 bit15 0 led0 low active led1 low active rsvd indicates option 1 of table 14 is selected 1 led0 high active led1 high active rsvd indicates option 2 of table 14 is selected table 13. led feature control-2 led pin act=0 act=1 link=0 floating all speed act link>0 selected speed link option 1 (see table 14 ): selected speed link+ selected speed act option 2 (see table 14): selected speed link+ all speed act note 1: act means blinking tx and rx. link indicates link 10m and link 100m. note 2: there is a special mode: led off mode ? set all bits to 0.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 9 track id: jatr-8275-15 rev. 1.0 table 14. led option 1 & option 2 settings link bit active bit description 10 100 link option 1 led activity option 2 led activity 0 0 0 led off 0 0 1 - act 10 +act 100 act 10 +act 100 0 1 0 link 100 - - 0 1 1 link 100 act 100 act 10 +act 100 1 0 0 link 10 - - 1 0 1 link 10 act 10 act 10 +act 100 1 1 0 link 10 +link 100 - - 1 1 1 link 10 +link 100 act 10 +act 100 act 10 +act 100 note: act 10 = led blinking when ethernet pa ckets transmitted/received at 10mbps. act 100 = led blinking when ethernet pa ckets transmitted/received at 100mbps. link 10 = led lit when ethernet connection established at 10mbps. link 100 = led lit when ethernet connection established at 100mbps. 6.2.1. led blinking frequency control the rtl8152b-vb also supports led blinking frequenc y and duty cycle control via ocp register offset dd92h to control user?s led blinking frequency and dut y cycle (see table 15). for example, if the ocp register offset 0xdd92 is 0x0b (00001011b), the led b linking frequency is 80ms and duty cycle is 75%. the led state is shown in figure 2 (assumes the led is low active). table 15. led blinking frequency control bit rw description 3:2 rw led blinking frequency 0: 240ms 1: 160ms (default) 2: 80ms 3: link speed dependent 1:0 rw led blinking duty cycle 0: 12.5% 1: 25% 2: 50% (default) 3: 75% figure 2. led blinking frequency and duty cycle
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 10 track id: jatr-8275-15 rev. 1.0 6.3. phy transceiver based on state-of-the-art dsp technology and mixed-mode signa l processing technology, the rtl8152b-vb operates at 10/100mbps over standard cat.5 utp cable (100 mbps), and cat.3 utp cable (10mbps). 6.3.1. phy transmitter mii (100mbps) mode the transmitted 4-bit nibbles (txd[3:0]) from the ma c, clocked at 25mhz (txc), are converted into 5b symbol code through 4b/5b coding technology, then through scrambling and serializing, are converted to 125mhz nrz and nrzi signals. the nrzi si gnals are passed to the mlt3 encoder, then to the d/a converter and transmitted onto the media. mii (10mbps) mode the transmitted 4-bit nibbles (txd[3:0]) from the mac, clocked at 2.5mhz (txc), are serialized into 10mbps serial data. the 10mbps serial data is convert ed into a manchester-encoded data stream and is transmitted onto the media by the d/a converter. 6.3.2. phy receiver mii (100mbps) mode the mlt3 signal is processed with an adc, e qualizer, blw (baseline wander) correction, timing recovery, mlt3 and nrzi decoder, descrambler, 4b /5b decoder, and is then presented to the mii interface in 4-bit-wide nibbles at a clock speed of 25mhz. mii (10mbps) mode the received differential signal is converted into a manchester-encoded st ream first. next, the stream is processed with a manchester decoder and is de-seria lized into 4-bit-wide nibbles. the 4-bit nibbles are presented to the mii interface at a clock speed of 2.5mhz. 6.3.3. link down power saving mode the rtl8152b-vb implements link-down power sa ving mode, greatly improving power consumption when the network cable is disconnected. the r tl8152b-vb automatically enters link down power saving mode within three seconds af ter the cable is disconnected from it. once it enters link down power saving mode, it transmits normal link pulses on its tx pins and continues to monitor the rx pins to detect incoming signals. after it detects an inco ming signal, it wakes up from link down power saving mode and operates in normal mode acco rding to the result of the connection.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 11 track id: jatr-8275-15 rev. 1.0 6.4. spi flash spi (serial peripheral interface) fl ash is enabled by the rtl8152b-vb through the chip select pin, and accessed via a 3-wire interface consisti ng of serial data input (si), seri al data output (so), and serial clock (sck). the spi flash utilizes an 8-bit instruction register. all in structions, addresse s, and data are transferred with the msb first and start with a high-to-low transition. compared to a parallel bus interf ace, the serial peripheral interfac e provides simpler wiring and much less interaction (crosstalk) among the conductors in th e cable. this minimizes the number of conductors, pins, and the ic package size, reducing the cost of making, assembling, and testing the electronics. table 16. spi flash interface spi flash description so input data bus. si output data bus. sck spi flash serial data clock. cs spi flash chip select. 6.5. energy efficient ethernet (eee) the rtl8152b-vb supports ieee 802.3az-2010, also known as energy efficient ethernet (eee), at 10mbps and 100mbps. it provides a protocol to coordinate transitions to/from a lower power consumption level (low power idle mode) based on link utilization. when no packets are being transmitted, the system goes to low power idle mode to save power. once packets need to be transmitted, the system returns to normal mode, a nd does this without changing the link status and without dropping/corrupting frames. to save power, when the system is in low power idle mode, most of the circui ts are disabled, however, the transition time to/from low power idle mode is kept small enough to be transparent to upper layer protocols and applications. eee also specifies a negotiation method to enable li nk partners to determine whether eee is supported and to select the best set of parameters common to both devices. refer to http://www.ieee802.org/3/az /index.html for more details. 6.6. link power management (lpm) the rtl8152b-vb supports link power management (l pm). it provides an efficient way to manage bus and system power via hosts and hubs. it impl ements a power sleep st ate that reduces power consumption by providing faster suspend and resume ti mes. the four power management states for usb are l0 (on), l1 (sleep), l2 (suspend) and l3 (off). to reduce power consumption when the system is in low power state, some of the circuits are disabled. refer to http://www.usb.org/developers/docs/.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 12 track id: jatr-8275-15 rev. 1.0 6.7. lan disable mode the rtl8152b-vb supports ?lan disa ble mode?, which uses an external signal to control whether the nic is enabled or disabled. 6.8. power management the rtl8152b-vb complies with acpi (rev 1.0, 1.0b, 2.0), network device class power management reference specification (v1.0a), such as to support an operating system-directed power management (ospm) environment. the rtl8152b-vb can monitor the network for a wa ke-up frame or a magic packet, and notify the system via the usb interface when such a packet or ev ent occurs. the system is then restored to a normal state to process incoming jobs. when the rtl8152b-vb is in power down mode: ? the rx state machine is stopped. the rtl8152b-vb m onitors the network for wake-up events such as a magic packet and wake-up frame in order to wake up the system. when in power down mode, the rtl8152b-vb will not reflect the status of any incoming packets in the isr register and will not receive any packets into the rx on-chip buffer. ? the on-chip buffer status and packets that have already been received into the rx on-chip buffer before entering power down mode are held by the rtl8152b-vb. ? transmission is stopped. usb transactions are stopped. the tx on-chip buffer is held. ? after being restored to d0 stat e, the rtl8152b-vb transmits data that was not moved into the tx on-chip buffer during power down mode. packets that were not transmitted completely last time are re-transmitted. magic packet wake-up occurs only wh en the following conditions are met: ? the destination address of the received magic packet is accepta ble to the rtl8152b-vb, e.g., a broadcast, multicast, or unicast packet addressed to the current rtl8152b-vb adapter. ? the received magic packet does not contain a crc error. ? the magic packet pattern matches, i.e., 6 * ffh + misc (can be none) + 16 * did (destination id) in any part of a valid ethernet packet.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 13 track id: jatr-8275-15 rev. 1.0 a wake-up frame event occurs only when the following conditions are met: ? the destination address of the received wake-up frame is acceptable to the rtl8152b-vb, e.g., a broadcast, multicast, or unicast addre ss to the current rtl8152b-vb adapter. ? the received wake-up frame does not contain a crc error. ? the 16-bit crc of the received wake-up frame matches the 16-bit crc of the sample wake-up frame pattern given by the local machine?s os. or, the rtl8152b-vb is configured to allow direct packet wake-up, e.g., a broadcast, mu lticast, or unicast network packet. ? the 128-byte of the received wake-up frame matc hes the 128-byte of the sample wake-up frame pattern given by the local machine?s os. note 1: 16-bit crc: the rtl8152b-vb supports 16- set 16-bit crc wake-up frames (covering 128 mask bytes from offset 0 to 127 of any in coming network packet). crc16 polynomial=x 16 +x 12 +x 5 +1. note 2: 128-byte wake-up fr ame: the rtl8152b-vb supports 16- set 128-byte wake-up frames. if enabled, the 16-bit crc wake-up match will be disabled. 6.9. protocol offload protocol offload is a task offload supported by micros oft windows 7. it maintain s a network presence for a sleeping higher power host. protoc ol offload prevents spurious wa ke-up and further reduces power consumption. it maintains connectivity while hosts ar e asleep, including receiving requests from other nodes on the network, ignoring packets, generating packets while in th e sleep state (e.g., the ethernet controller will generate arp re sponses if the same mac and ipv4 address are provided in the configuration data), and intel ligently wake-up host systems. th e rtl8152b-vb supports the ecma (european computer manufacturer s association) specification including proxy configuration and management, ipv4 arp, ipv6 ndp, and wake-up pack ets. the rtl8152b-vb also supports optional ecma items such as qos tagged pack ets and duplicate address detection. 6.10. xtal-less wake-on-lan the rtl8152b-vb supports board level design with an external 25mhz or 48mhz clock source instead of the crystal. the external clock source may stop generating the cl ock when in suspend mode (s3/s4/s5). to support the wake-on-lan function without the external clock source, the rtl8152b -vb will automatically change its source clock from the external clock to an internal self-oscillating auxiliary clock when it enters suspend mode. note that when in suspend m ode, the auxiliary clock can establish on ly a 10mbps link and does not support arp/ns offload and ecma proxzzzy.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 14 track id: jatr-8275-15 rev. 1.0 6.11. wake packet detection (wpd) the rtl8152b-vb supports microsoft wake packet detection (wpd) to provide wake-up frame information to the os, e.g., patternid, originalpack etsize, savedpacketsize, savedpacketoffset, etc. wpd helps prevent unwanted/unauthorized wake-up of a sleeping computer. refer to the microsoft wake packet detect ion (wpd) interface specification for details (http://msdn.microsoft.com/en-us /library/hh440160(v=vs.85).aspx). 6.12. ?realwow!? (wake-on-wan) technology the rtl8152b-vb supports realtek 'realwo w!' technology that allows the rtl8152b-vb to send keep alive packets to the wake server when the pc is in sleeping mode. realtek 'realwow!' can pass wake-up packets through a nat (network address translation) device. this feature allows pcs to reduce power cons umption by remaining in low power sleeping state until needed. users can login into the wake server via the internet to wake the selected sleeping pc. registration of account information to the wake server is required on first time use. 6.13. always on always connected the rtl8152b-vb supports microsoft?s aoac (alw ays on always connected) model. the aoac platform can enter the system state ?connected standby? and allow the rtl8152b-vb to enter a low-power state. the rtl8152b-vb will maintain layer 2 connectivity and generate a wake signal when one of the following conditions is satisfied: ? link status becomes ?connected? ? link status becomes ?disconnected? ? receives a wol pattern ? receives a wildcard pattern 7. ldo regulator the rtl8152b-vb incorporates three linear low-dr opout (ldo) regulators that feature high power supply ripple rejection and low output noise. the rtl8152b-vb embedded ldo regulators do not require power inductors on the pcb; only an out put capacitor between its output and analog ground for phase compensation, which saves cost and pcb real estate. the output capacitors (and bypass capacito rs) should be placed as close as possible to the power pins for adequate filtering. note 1: the embedded ldo is desi gned for rtl8152b-vb internal use only. do not provide this power source to other devices. note 2: the ldo 1.05v output pin (dvdd10_ups) must be separated from the other ldo 1.05v output pin (avdd10).
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 15 track id: jatr-8275-15 rev. 1.0 8. characteristics 8.1. absolute maximum ratings warning: absolute maximum ratings are limits beyond which permanent damage may be caused to the device, or device reliability will be affected. all voltages are specified reference to gnd unless otherwise specified. table 17. absolute maximum ratings symbol description minimum maximum unit vdd5in supply voltage 5.0v -0.3 5.5 v vdd33out, avdd33, dvdd33 supply voltage 3.3v -0.3 3.63 v avdd10, dvdd10, dvdd10_ups supply voltage 1.05v -0.3 1.32 v dcinput input voltage -0.3 corresponding supply voltage + 10% v dcoutput output voltage -0.3 corresponding supply voltage + 10% v n/a storage temperature -55 +125 c note: refer to the latest schematic circuit for correct configuration. 8.2. recommended operating conditions table 18. recommended operating conditions description symbol minimum typical maximum unit vdd5 4.75 5.0 5.25 v avdd33, dvdd33 3.14 3.3 3.46 v supply voltage vdd avdd10, dvdd10, dvdd10_ups 1.0 1.05 1.1 v ambient operating temperature t a - 0 - 70 c maximum junction temperature - - - 125 c note: refer to the latest schematic circuit for correct configuration.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 16 track id: jatr-8275-15 rev. 1.0 8.3. crystal requirements table 19. crystal requirements symbol description/condition minimum typical maximum unit f ref parallel resonant crystal reference frequency, fundamental mode, at-cut type. - 25/48 - mhz f ref stability parallel resonant crystal frequency stability, fundamental mode, at-cut type. t a = 0 c ~ +70 c. -30 - +30 ppm f ref tolerance parallel resonant crystal frequency tolerance, fundamental mode, at-cut type. t a = 25 c. -50 - +50 ppm f ref duty cycle reference clock input duty cycle. 40 - 60 % esr equivalent series resistance. - - 70 ? cl load capacitance. 16 - 20 pf dl drive level. - - 0.5 mw note 1: the clk source can come from other places in the system, but it must accord with the parameters above. note 2: broadband rms=9ps; 25khz to 25mhz rms=3ps. note 3: the esr maximum value of 70ohm is based on shunt capacitance (co) less than 7pf. note 4: the accuracy of the crystal reso nance frequency can be achieved by matchi ng the load capacitance correctly to the designed-in circuit. the latest schematic circuit recommends two external capacitors of 27pf connected between the crystal and ground. to match this use the load capacitance specified by the crystal manufacturer of 16~20pf. 8.4. oscillator requirements table 20. oscillator requirements parameter condition minimum typical maximum unit frequency - - 25/48 - mhz frequency stability t a = 0 c~+70 c -30 - +30 ppm frequency tolerance t a = 25 c -50 - +50 ppm duty cycle - 40 - 60 % broadband peak-to-peak jitter - - - 200 ps vp-p - 3.15 3.3 3.45 v rise time - - - 10 ns fall time - - - 10 ns operation temp range - 0 - 70 c note 1: the clk source can come from other places in the system, but it must accord with the parameters above. note 2: broadband rms=9ps; 25khz to 25mhz rms=3ps. 8.5. environmental characteristics table 21. environmental characteristics parameter minimum maximum units storage temperature -55 +125 c ambient operating temperature 0 70 c
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 17 track id: jatr-8275-15 rev. 1.0 8.6. dc characteristics table 22. dc characteristics symbol parameter conditions minimum typical maximum units vdd5 5.0v supply voltage - 4.75 5.00 5.25 v avdd33, dvdd33 3.3v supply voltage - 3.14 3.30 3.46 v avdd10, dvdd10, dvdd10_ups 1.05v supply voltage - 1.00 1.05 1.10 v v oh minimum high level output voltage i oh = -4ma 0.9*vdd33 - vdd33 v v ol maximum low level output voltage i ol = 4ma 0 - 0.1*vdd33 v v ih minimum high level input voltage - 2.0 - - v v il maximum low level input voltage - - - 0.8 v i in input current vin = vdd33 or gnd 0 - 0.5 a icc5 average operating supply current from 5.0v at 100mbps with heavy network traffic - 0.4 - ma icc33 average operating supply current from 3.3v at 100mbps with heavy network traffic - 24 - ma icc10 average operating supply current from 1.05v at 100mbps with heavy network traffic - 60 - ma note: refer to the latest schematic circuit for correct configuration. 8.7. reflow profile recommendations table 23. reflow profile recommendations profile feature sn-pb eutectic assembly pb-free assembly minimum preheat temperature (t smin ) 100 c 150 c maximum preheat temperature (t smax ) 150 c 200 c preheat time (t s ) from t smin to t smax 60~120 seconds 60~120 seconds ramp-up rate (t l to t p ) 3c/second max. 3c/second max. liquidus temperature (t l ) 183 c 217 c time (t l ) maintained above t l 60~150 seconds 60~150 seconds peak package body temperature (t p ) 235 c 260 c time (t p ) 2 within 5c of peak t p 20 seconds 20 seconds ramp-down rate (t p to t l ) 6c/second max. 6c/second max. time 25c to peak temperature (t p ) 6 minutes max. 8 minutes max. note 1: all temperatures refer to the topside of the package, measured on the package body surface. note 2: tolerance for tp is defined as a supplier?s minimum and a user?s maximum. note 3: reference document: ipc/jedec j-std-020d.1.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 18 track id: jatr-8275-15 rev. 1.0 8.8. ac characteristics 8.8.1. spi flash commands table 24. spi flash commands command operation code action wren 06h write enable. wrdi 04h write disable. rdid 9fh read manufacturer and product id. rdsr 05h read status register. wrsr 01h write status register. read 03h read. page program 02h page program. sector erase (4k) 20h erase the selected sector. block erase (64k) d8h erase the selected block. chip erase 60h or c7h erase whole chip. 8.8.2. spi flash interface timing sequences figure 3. wren/wrdi timing sequence figure 4. read timing sequence
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 19 track id: jatr-8275-15 rev. 1.0 figure 5. page program timing sequence figure 6. sector/block erase timing sequence figure 7. chip erase timing sequence
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 20 track id: jatr-8275-15 rev. 1.0 8.8.3. spi flash type supported table 25. spi flash type supported manufacturer flash part no. density (mb) maximum freq. (mhz) mxic mx25l4006e 4 86 mx25l8006e 8 86 mx25l1606e 16 86 winbond w25x40cv 4 80 w25q40bv 4 80 w25q80bv 8 80 w25q16cv 16 80 micron m25p40 4 75 m25px80 8 75 m25px16 16 75 note 1: the flash clock frequency should be 33mhz or higher. note 2: flash density should be 4mb or more. 4mb is only for single os driver. for feature extensions, 8mb is recommended.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 21 track id: jatr-8275-15 rev. 1.0 9. mechanical dimensions symbol dimension in mm dimension in inch min nom max min nom max a 0.80 0.85 0.90 0.031 0.033 0.035 a 1 0.00 0.02 0.05 0.000 0.001 0.002 a 2 - 0.65 0.70 - 0.026 0.028 a 3 0.20ref 0.008ref b 0.18 0.25 0.30 0.007 0.010 0.012 d/e 4.00bsc 0.158bsc d2/e2 2.45 2.70 2.95 0.096 0.106 0.116 e 0.50bsc 0.020bsc l 0.30 0.40 0.50 0.012 0.016 0.020 note 1: controlling dime nsion: millimeter (mm). note 2: reference document: jedec mo-220.
rtl8152b-vb datasheet integrated 10/100m ethernet controller for usb applications 22 track id: jatr-8275-15 rev. 1.0 10. ordering information table 26. ordering information part number package status RTL8152B-VB-CG 24-pin qfn ?green? package - note: see page 3 for package id information. realtek semiconductor corp. headquarters no. 2, innovation road ii hsinchu science park, hsinchu 300, taiwan tel.: +886-3-578-0211. fax: +886-3-577-6047 www.realtek.com

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