SLLSEL3C July   2015  – September 2017 TLK10031

PRODUCTION DATA.  

  1. Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
  2. Revision History
  3. Description
  4. Terminal Configuration and Functions
    1. 4.1 Pin Attributes
  5. Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics: High Speed Side Serial Transmitter
    6. 5.6  Electrical Characteristics: High Speed Side Serial Receiver
    7. 5.7  Electrical Characteristics: Low Speed Side Serial Transmitter
    8. 5.8  Electrical Characteristics: Low Speed Side Serial Receiver
    9. 5.9  Electrical Characteristics: LVCMOS (VDDO):
    10. 5.10 Electrical Characteristics: Clocks
    11. 5.11 Timing Requirements
    12. 5.12 Typical Characteristics
  6. Parametric Measurement Information
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1  10GBASE-KR Transmit Data Path Overview
      2. 7.3.2  10GBASE-KR Receive Data Path Overview
      3. 7.3.3  Channel Synchronization Block
      4. 7.3.4  8B/10B Encoder
      5. 7.3.5  8B/10B Decoder
      6. 7.3.6  64B/66B Encoder/Scrambler
      7. 7.3.7  Forward Error Correction
      8. 7.3.8  64B/66B Decoder/Descrambler
      9. 7.3.9  Transmit Gearbox
      10. 7.3.10 Receive Gearbox
      11. 7.3.11 XAUI Lane Alignment / Code Gen (XAUI PCS)
      12. 7.3.12 Inter-Packet Gap (IPG) Characters
      13. 7.3.13 Clock Tolerance Compensation (CTC)
      14. 7.3.14 10GBASE-KR Auto-Negotiation
      15. 7.3.15 10GBASE-KR Link Training
      16. 7.3.16 10GBASE-KR Line Rate, PLL Settings, and Reference Clock Selection
      17. 7.3.17 10GBASE-KR Test Pattern Support
      18. 7.3.18 10GBASE-KR Latency
    4. 7.4 Device Functional Modes
      1. 7.4.1  10GBASE-KR Mode
      2. 7.4.2  1GBASE-KX Mode
        1. 7.4.2.1 Channel Sync Block
        2. 7.4.2.2 8b/10b Encoder and Decoder Blocks
        3. 7.4.2.3 TX CTC
        4. 7.4.2.4 1GBASE-KX Line Rate, PLL Settings, and Reference Clock Selection
        5. 7.4.2.5 1GBASE-KX Mode Latency
          1. 7.4.2.5.1 Test Pattern Generator
          2. 7.4.2.5.2 Test Pattern Verifier
      3. 7.4.3  General Purpose (10G) Serdes Mode Functional Description
        1. 7.4.3.1 General Purpose SERDES Transmit Data Path
      4. 7.4.4  General Purpose SERDES Receive Data Path
      5. 7.4.5  Channel Synchronization
      6. 7.4.6  8B/10B Encoder and Decoder
      7. 7.4.7  Lane Alignment Scheme for 8b/10b General Purpose Serdes Mode
      8. 7.4.8  Lane Alignment Components
      9. 7.4.9  Lane Alignment Operation
      10. 7.4.10 Line Rate, SERDES PLL Settings, and Reference Clock Selection for the General Purpose SERDES Mode
      11. 7.4.11 General Purpose SERDES Mode Test Pattern Support
      12. 7.4.12 General Purpose SERDES Mode Latency
        1. 7.4.12.1 Clocking Architecture (All Modes)
        2. 7.4.12.2 Integrated Smart Switch
      13. 7.4.13 Intelligent Switching Modes
      14. 7.4.14 Serial Loopback Modes
      15. 7.4.15 Latency Measurement Function (General Purpose SerDes Mode)
      16. 7.4.16 Power Down Mode
        1. 7.4.16.1 High Speed CML Output
        2. 7.4.16.2 High Speed Receiver
        3. 7.4.16.3 Loss of Signal Output Generation (LOS)
      17. 7.4.17 MDIO Management Interface
      18. 7.4.18 MDIO Protocol Timing
      19. 7.4.19 Clause 22 Indirect Addressing
      20. 7.4.20 Provisionable XAUI Clock Tolerance Compensation
        1. 7.4.20.1 Insertion:
        2. 7.4.20.2 Removal:
    5. 7.5 Register Maps
      1. 7.5.1 Register Bit Definitions
        1. 7.5.1.1 RW: Read-Write
        2. 7.5.1.2 RW/SC: Read-Write Self-Clearing
        3. 7.5.1.3 RO: Read-Only
        4. 7.5.1.4 RO/LH: Read-Only Latched High
        5. 7.5.1.5 RO/LL: Read-Only Latched Low
        6. 7.5.1.6 COR: Clear-On-Read
      2. 7.5.2 Vendor Specific Device Registers
        1. 7.5.2.1  GLOBAL_CONTROL_1 (register: 0x0000) (default: 0x0610) (device address: 0x1E)
        2. 7.5.2.2  CHANNEL_CONTROL_1 (register: 0x0001) (default: 0x0B00) (device address: 0x1E)
        3. 7.5.2.3  HS_SERDES_CONTROL_1 (register: 0x0002 ) (default: 0x831D) (device address: 0x1E)
        4. 7.5.2.4  HS_SERDES_CONTROL_2 (register: 0x0003) (default: 0xA848) (device address: 0x1E)
        5. 7.5.2.5  HS_SERDES_CONTROL_3 (register: 0x0004) (default: 0x1500) (device address: 0x1E)
        6. 7.5.2.6  HS_SERDES_CONTROL_4 (register: 0x0005) (default: 0x2000) (device address: 0x1E)
        7. 7.5.2.7  LS_SERDES_CONTROL_1 (register: 0x0006) (default: 0xF115) (device address: 0x1E)
        8. 7.5.2.8  LS_SERDES_CONTROL_2 (register: 0x0007) (default: 0xDC04) (device address: 0x1E)
        9. 7.5.2.9  LS_SERDES_CONTROL_3 (register: 0x0008) (default: 0x000D) (device address: 0x1E)
        10. 7.5.2.10 HS_OVERLAY_CONTROL (register: 0x0009) (default: 0x0380) (device address: 0x1E)
        11. 7.5.2.11 LS_OVERLAY_CONTROL (register: 0x000A) (default: 0x4000) (device address: 0x1E)
        12. 7.5.2.12 LOOPBACK_TP_CONTROL (register: 0x000B) (default: 0x0D10) (device address: 0x1E)
        13. 7.5.2.13 LS_CONFIG_CONTROL (register: 0x000C) (default: 0x0330) (device address: 0x1E)
        14. 7.5.2.14 LS_CONFIG_CONTROL (register: 0x000C) (default: 0x0330) (device address: 0x1E)
        15. 7.5.2.15 CLK_CONTROL (register: 0x000D) (default: 0x2F80) (device address: 0x1E)
        16. 7.5.2.16 RESET_CONTROL (register: 0x000E) (default: 0x0000) (device address: 0x1E)
        17. 7.5.2.17 CHANNEL_STATUS_1 (register: 0x000F) (default: 0x0000) (device address: 0x1E)
        18. 7.5.2.18 HS_ERROR_COUNTER (register: 0x0010) (default: 0x0FFFD) (device address: 0x1E)
        19. 7.5.2.19 LS_LN0_ERROR_COUNTER (register: 0x0011) (default: 0xFFFD) (device address: 0x1E)
        20. 7.5.2.20 LS_LN1_ERROR_COUNTER (register: 0x0012 ) (default: 0xFFFD) (device address: 0x1E)
        21. 7.5.2.21 LS_LN2_ERROR_COUNTER (register: 0x0013) (default: 0xFFFD) (device address: 0x1E)
        22. 7.5.2.22 LS_LN3_ERROR_COUNTER (register: 0x0014) (default: 0xFFFD) (device address: 0x1E)
        23. 7.5.2.23 LS_STATUS_1 (register: 0x0015) (default: 0x0000) (device address: 0x1E)
        24. 7.5.2.24 HS_STATUS_1 (register: 0x0016) (default: 0x0000) (device address: 0x1E)
        25. 7.5.2.25 DST_CONTROL_1 (register = 0x0017) (default = 0x2000) (device address: 0x1E)
        26. 7.5.2.26 DST_CONTROL_2 (register = 0x0018 ) (default = 0x0C20) (device address: 0x1E)
        27. 7.5.2.27 DSR_CONTROL_1 (register = 0x0019) (default = 0x2500) (device address: 0x1E)
        28. 7.5.2.28 DSR_CONTROL_2 (register = 0x001A) (default = 0x4C20) (device address: 0x1E)
        29. 7.5.2.29 DATA_SWITCH_STATUS (register = 0x001B) (default = 0x1020) (device address: 0x1E)
        30. 7.5.2.30 LS_CH_CONTROL_1 (register =0x001C) (default =0x0000) (device address: 0x1E)
        31. 7.5.2.31 HS_CH_CONTROL_1 (register = 0x001D) (default = 0x0000) (device address: 0x1E)
        32. 7.5.2.32 EXT_ADDRESS_CONTROL (register = 0x001E) (default = 0x0000) (device address: 0x1E)
        33. 7.5.2.33 EXT_ADDRESS_DATA (register = 0x001F) (default = 0x0000) (device address: 0x1E)
        34. 7.5.2.34 VS_10G_LN_ALIGN_ACODE_P (register =0x8003) (default = 0x0283) (device address: 0x1E)
        35. 7.5.2.35 VS_10G_LN_ALIGN_ACODE_N (register =0x8004 ) (default = 0x017C) (device address: 0x1E)
        36. 7.5.2.36 MC_AUTO_CONTROL (register = 0x8021) (default = 0x000F) (device address: 0x1E)
        37. 7.5.2.37 DST_ON_CHAR_CONTROL (register = 0x802A) (default = 0x02FD) (device address: 0x1E)
        38. 7.5.2.38 DST_OFF_CHAR_CONTROL (register = 0x802B ) (default = 0x02FD) (device address: 0x1E)
        39. 7.5.2.39 DST_STUFF_CHAR_CONTROL (register = 0x802C) (default = 0x0207) (device address: 0x1E)
        40. 7.5.2.40 DSR_ON_CHAR_CONTROL (register = 0x802D) (default = 0x02FD) (device address: 0x1E)
        41. 7.5.2.41 DSR_OFF_CHAR_CONTROL (register = 0X802E) (default = 0x02FD) (device address: 0x1E)
        42. 7.5.2.42 DSR_STUFF_CHAR_CONTROL (register = 0x802F) (default = 0x0207) (device address: 0x1E)
        43. 7.5.2.43 LATENCY_MEASURE_CONTROL (register = 0x8040) (default = 0x0000) (device address: 0x1E)
        44. 7.5.2.44 LATENCY_COUNTER_2 (register = 0x8041) (default =0x0000) (device address: 0x1E)
        45. 7.5.2.45 LATENCY_COUNTER_1 (register = 0x8042) (default = 0x0000) (device address: 0x1E)
        46. 7.5.2.46 TRIGGER_LOAD_CONTROL (register =0x8100) (default = 0x0000) (device address: 0x1E)
        47. 7.5.2.47 TRIGGER_EN_CONTROL (register = 0x8101) (default = 0x0000) (device address: 0x1E)
      3. 7.5.3 PMA/PMD Registers
        1. 7.5.3.1  PMA_CONTROL_1 (register = 0x0000) (default = 0x0000) (device address: 0x01)
        2. 7.5.3.2  PMA_STATUS_1 (register = 0x0001) (default = 0x0002) (device address: 0x01)
        3. 7.5.3.3  PMA_DEV_IDENTIFIER_1 (register = 0x0002) (default = 0x4000) (device address: 0x01)
        4. 7.5.3.4  PMA_DEV_IDENTIFIER_2 (register = 0x0003) (default = 0x5100) (device address: 0x01)
        5. 7.5.3.5  PMA_SPEED_ABILITY (register = 0x0004) (default = 0x0011) (device address: 0x01)
        6. 7.5.3.6  PMA_DEV_PACKAGE_1 (register = 0x0005) (default = 0x000B) (device address: 0x01)
        7. 7.5.3.7  PMA_DEV_PACKAGE_2 (register = 0x0006) (default = 0x4000) (device address: 0x01)
        8. 7.5.3.8  PMA_DEV_PACKAGE_2 (register = 0x0006) (default = 0x4000) (device address: 0x01)
        9. 7.5.3.9  PMA_RX_SIGNAL_DET_STATUS (register = 0x000A) (default = 0x0000) (device address: 0x01)
        10. 7.5.3.10 PMA_EXTENDED_ABILITY (register = 0x000B) (default = 0x0050) (device address: 0x01)
        11. 7.5.3.11 LT_TRAIN_CONTROL (register =0x0096) (default = 0x0002) (device address: 0x01)
        12. 7.5.3.12 LT_TRAIN_STATUS (register = 0x0097) (default = 0x0000) (device address: 0x01)
        13. 7.5.3.13 LT_LINK_PARTNER_CONTROL (register = 0x0098) (default = 0x0000) (device address: 0x01)
        14. 7.5.3.14 LT_LINK_PARTNER_STATUS (register = 0x0099) (default = 0x0000) (device address: 0x01)
        15. 7.5.3.15 LT_LOCAL_DEVICE_CONTROL (register = 0x009A) (default = 0x0000) (device address: 0x01)
        16. 7.5.3.16 LT_LOCAL_DEVICE_STATUS (register = 0x009B) (default = 0x0000) (device address: 0x01)
        17. 7.5.3.17 KX_STATUS (register = 0x00A1) (default = 0x3000) (device address: 0x01)
        18. 7.5.3.18 KR_FEC_ABILITY (register = 0x00AA) (default = 0x0003) (device address: 0x01)
        19. 7.5.3.19 KR_FEC_CONTROL (register = 0x00AB) (default = 0x0000) (device address: 0x01)
        20. 7.5.3.20 KR_FEC_C_COUNT_1 (register = 0x00AC) (default = 0x0000) (device address: 0x01)
        21. 7.5.3.21 KR_FEC_C_COUNT_2 (register = 0x00AD) (default = 0x0000) (device address: 0x01)
        22. 7.5.3.22 KR_FEC_UC_COUNT_1 (register = 0x00AE) (default = 0x0000) (device address: 0x01)
        23. 7.5.3.23 KR_FEC_UC_COUNT_2 (register = 0x00AF) (default = 0x0000) (device address: 0x01)
        24. 7.5.3.24 KR_VS_FIFO_CONTROL_1 (register = 0x8001) (default = 0xCC4C) (device address: 0x01)
        25. 7.5.3.25 KR_VS_TP_GEN_CONTROL (register =0x8002) (default = 0x0000) (device address: 0x01)
        26. 7.5.3.26 KR_VS_TP_VER_CONTROL (register = 0x8003) (default = 0x0000) (device address: 0x01)
        27. 7.5.3.27 KR_VS_CTC_ERR_CODE_LN0 (register = 0x8005) (default = 0xCE00) (device address: 0x01)
        28. 7.5.3.28 KR_VS_CTC_ERR_CODE_LN1 (register = 0x8006) (default =0x0000) (device address: 0x01)
        29. 7.5.3.29 KR_VS_CTC_ERR_CODE_LN2 (register = 0x8007) (default = 0x0000) (device address: 0x01)
        30. 7.5.3.30 KR_VS_CTC_ERR_CODE_LN3 (register = 0x8008) (default = 0x0080) (device address: 0x01)
        31. 7.5.3.31 KR_VS_LN0_EOP_ERROR_COUNTER (register = 0x8010) (default = 0xFFFD) (device address: 0x01)
        32. 7.5.3.32 KR_VS_LN1_EOP_ERROR_COUNTER (register = 0x8011) (default = 0xFFFD) (device address: 0x01)
        33. 7.5.3.33 KR_VS_LN2_EOP_ERROR_COUNTER (register = 0x8012) (default = 0xFFFD) (device address: 0x01)
        34. 7.5.3.34 KR_VS_LN3_EOP_ERROR_COUNTER (register =0x8013 ) (default = 0xFFFD) (device address: 0x01)
        35. 7.5.3.35 KR_VS_TX_CTC_DROP_COUNT (register = 0x8014) (default = 0xFFFD) (device address: 0x01)
        36. 7.5.3.36 KR_VS_TX_CTC_INSERT_COUNT (register = 0x8015) (default = 0xFFFD) (device address: 0x01)
        37. 7.5.3.37 KR_VS_RX_CTC_DROP_COUNT (register = 0x8016) (default = 0xFFFD) (device address: 0x01)
        38. 7.5.3.38 KR_VS_RX_CTC_INSERT_COUNT (register = 0x8017) (default = 0xFFFD) (device address: 0x01)
        39. 7.5.3.39 KR_VS_STATUS_1 (register = 0x8018) (default = 0x0000) (device address: 0x01)
        40. 7.5.3.40 KR_VS_TX_CRCJ_ERR_COUNT_1 (register = 0x8019) (default = 0xFFFF) (device address: 0x01)
        41. 7.5.3.41 KR_VS_TX_CRCJ_ERR_COUNT_2 (register = 0x801A) (default = 0xFFFD) (device address: 0x01)
        42. 7.5.3.42 KR_VS_TX_LN0_HLM_ERR_COUNT (register = 0x801B) (default = 0xFFFD) (device address: 0x01)
        43. 7.5.3.43 KR_VS_TX_LN1_HLM_ERR_COUNT (register = 0x801C) (default = 0xFFFD) (device address: 0x01)
        44. 7.5.3.44 KR_VS_TX_LN2_HLM_ERR_COUNT (register = 0x801D) (default = 0xFFFD) (device address: 0x01)
        45. 7.5.3.45 KR_VS_TX_LN3_HLM_ERR_COUNT (register = 0x801E) (default = 0xFFFD) (device address: 0x01)
        46. 7.5.3.46 LT_VS_CONTROL_2 (register = 0x9001) (default = 0x0000) (device address: 0x01)
      4. 7.5.4 PCS Registers
        1. 7.5.4.1  PCS_CONTROL (register = 0x0000) (default = 0x0000) (device address: 0x03)
        2. 7.5.4.2  PCS_STATUS_1 (register = 0x0001) (default = 0x0002) (device address: 0x03)
        3. 7.5.4.3  PCS_STATUS_2 (register = 0x0008) (default = 0x8001) (device address: 0x03)
        4. 7.5.4.4  KR_PCS_STATUS_1 (register = 0x0020) (default = 0x0004) (device address: 0x03)
        5. 7.5.4.5  KR_PCS_STATUS_2 (register = 0x0021) (default = 0x0000) (device address: 0x03)
        6. 7.5.4.6  PCS_TP_SEED_A0 (register = 0x0022) (default = 0x0000) (device address: 0x03)
        7. 7.5.4.7  PCS_TP_SEED_A1 (register = 0x0023) (default = 0x0000) (device address: 0x03)
        8. 7.5.4.8  PCS_TP_SEED_A2 (register = 0x0024) (default = 0x0000) (device address: 0x03)
        9. 7.5.4.9  PCS_TP_SEED_A3 (register = 0x0025) (default = 0x0000) (device address: 0x03)
        10. 7.5.4.10 PCS_TP_SEED_B0 (register = 0x0026) (default = 0x0000) (device address: 0x03)
        11. 7.5.4.11 PCS_TP_SEED_B1 (register = 0x0027) (default = 0x0000) (device address: 0x03)
        12. 7.5.4.12 PCS_TP_SEED_B2 (register = 0x0028) (default = 0x0000) (device address: 0x03)
        13. 7.5.4.13 PCS_TP_SEED_B3 (register = 0x0029) (default = 0x0000) (device address: 0x03)
        14. 7.5.4.14 PCS_TP_CONTROL (register = 0x002A) (default = 0x0000) (device address: 0x03)
        15. 7.5.4.15 PCS_TP_ERR_COUNT (register = 0x002B) (default = 0x0000) (device address: 0x03)
        16. 7.5.4.16 PCS_VS_CONTROL (register = 0x8000) (default = 0x00B0) (device address: 0x03)
        17. 7.5.4.17 PCS_VS_STATUS (register = 0x8010) (default = 0x00FD) (device address: 0x03)
      5. 7.5.5 Auto-Negotiation Registers
        1. 7.5.5.1  AN_CONTROL (register = 0x0000) (default = 0x3000) (device address: 0x07)
        2. 7.5.5.2  AN_STATUS (register = 0x0001) (default = 0x0088) (device address: 0x07)
        3. 7.5.5.3  AN_DEV_PACKAGE (register = 0x0005) (default = 0x0080) (device address: 0x07)
        4. 7.5.5.4  AN_ADVERTISEMENT_1 (register = 0x0010) (default = 0x1001) (device address: 0x07)
        5. 7.5.5.5  AN_ADVERTISEMENT_2 (register = 0x0011) (default = 0x0080) (device address: 0x07)
        6. 7.5.5.6  AN_ADVERTISEMENT_3 (register = 0x0012) (default = 0x4000) (device address: 0x07)
        7. 7.5.5.7  AN_LP_ADVERTISEMENT_1 (register = 0x0013) (default = 0x0001) (device address: 0x07)
        8. 7.5.5.8  AN_LP_ADVERTISEMENT_2 (register = 0x0014) (default = 0x0000) (device address: 0x07)
        9. 7.5.5.9  AN_LP_ADVERTISEMENT_3 (register = 0x0015) (default = 0x0000) (device address: 0x07)
        10. 7.5.5.10 AN_XNP_TRANSMIT_1 (register = 0x0016) (default = 0x2000) (device address: 0x07)
        11. 7.5.5.11 AN_XNP_TRANSMIT_2 (register = 0x0017) (default = 0x0000) (device address: 0x07)
        12. 7.5.5.12 AN_XNP_TRANSMIT_3 (register = 0x0018) (default = 0x0000) (device address: 0x07)
        13. 7.5.5.13 AN_LP_XNP_ABILITY_1 (register = 0x0019) (default = 0x0000) (device address: 0x07)
        14. 7.5.5.14 AN_LP_XNP_ABILITY_2 (register = 0x001A) (default = 0x0000) (device address: 0x07)
        15. 7.5.5.15 AN_LP_XNP_ABILITY_3 (register = 0x001B) (default = 0x0000) (device address: 0x07)
        16. 7.5.5.16 AN_BP_STATUS (register = 0x0030) (default = 0x0001) (device address: 0x07)
  8. Applications and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 TLK10031 High-Speed Data Path
        1. 10.1.1.1 Layout Recommendations for High-Speed Signals
        2. 10.1.1.2 AC-coupling
      2. 10.1.2 TLK10031 Clocks: REFCLK, CLKOUT
        1. 10.1.2.1 General Information
        2. 10.1.2.2 External Clock Connections
        3. 10.1.2.3 TLK10031 Control Pins and Interfaces
          1. 10.1.2.3.1 MDIO Interface
          2. 10.1.2.3.2 JTAG Interface
          3. 10.1.2.3.3 Unused Pins
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical Packaging and Orderable Information
    1. 12.1 Packaging Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Applications and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

Application Information

The TLK10031 device can be used to convert between XAUI (on the low speed port) and 10GBASE-R signaling (on the high speed port). The high speed side of the device meets the requirements of the 10GBASE-KR physical layer standard for 10 Gbps data transmission over a PCB backplane. The device can also be used for optical physical layers (like 10GBASE-SR or 10GBASE-LR) by interfacing to optical modules requiring SFI or XFI electrical signaling. For optical use cases, KR-specific features like Clause 73 auto-negotiation and link training should be disabled.

Typical Application

A typical application for TLK10031 is to support 10 Gbps Ethernet data transmission over a backplane, e.g., between a network processor or MAC and switch ASIC located on separate cards within a router chassis. A block diagram of this application is shown in Figure 8-1.

TLK10031 application_circuit_sllsel3.gif Figure 8-1 Typical Application Circuit

Design Requirements

For this design example, use the parameters shown in Table 8-1.

Table 8-1 Design Parameters

PARAMETER VALUE
10GBASE-KR Interface Requirements
Signaling rate 10.3125 Gbps ±100 ppm
Differential peak-to-peak output voltage (maximum) 1200 mV
Total jitter (maximum) 0.28 UI
Encoding 64b/66b
Scrambling? Yes
Auto-negotation? Yes
Link training Yes
XAUI Interface Requirements
Signaling rate per lane 3.125 Gbps ±100 ppm
Differential peak-to-peak output voltage (maximum) 1600 mV
Total jitter (maximum) 0.35 UI

Detailed Design Procedure

The TLK10031 should be powered via a 1-V (nominal) supply on the VDDD, VDDA, DVDD, VDDT, and VPP rails and by a 1.5-V or 1.8-V (nominal) supply on the VDDR and VDDO rails. The power supply accuracy should be 5% or better, and the user should be careful that resistive losses across the application PCB’s power distribution network do not cause the voltage present at the TLK10031 BGA balls to be below specification. If a switched-mode power supply is used, care should be taken to ensure low supply ripple

A differential reference clock must be provided to either the REFCLK0P/N or REFCLK1P/N input port. The clock signal should be AC-coupled and have a differential amplitude between 250 mV and 2000 mV peak-to-peak. For 10GBASE-R applications, the clock frequency should be either 156.25 MHz or 312.5 MHz and have an accuracy of 100 ppm. Because jitter on the reference clock can transfer through the TLK10031 PLLs and onto the serial outputs, it is best to keep the reference clock’s jitter as low as possible (that is, under 1 ps from 10 kHz to 20 MHz) in order to meet the requirements of IEEE 802.3.

All serial inputs and outputs should be laid out on the PCB following best practices for high speed signal integrity. Detailed layout recommendations are given in the Section 10 section.

Application Curves

The output eye diagram of the TLK10031 (operated at 10.3125 Gbps under nominal conditions) is shown Figure 8-2.

TLK10031 app_curve_sllsel3.gif Figure 8-2 Eye Diagram of the TLK10031