SLLSEN7E October   2015  – September 2017 TMDS171

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Reset Implementation
      2. 8.3.2  Operation Timing
      3. 8.3.3  Swap and Polarity Working (Retimer Mode Only)
      4. 8.3.4  TMDS Inputs
      5. 8.3.5  TMDS Inputs Debug Tools
      6. 8.3.6  Receiver Equalizer
      7. 8.3.7  Input Signal Detect Block
      8. 8.3.8  Audio Return Channel
      9. 8.3.9  Transmitter Impedance Control
      10. 8.3.10 TMDS Outputs
      11. 8.3.11 Pre-Emphasis/De-Emphasis
    4. 8.4 Device Functional Modes
      1. 8.4.1 Retimer Mode
      2. 8.4.2 Redriver Mode
      3. 8.4.3 DDC Functional Description
      4. 8.4.4 Mode Selection Functional Description
    5. 8.5 Register Maps
      1. 8.5.1  Local I2C Overview
        1. 8.5.1.1 BIT Access Tag Conventions
      2. 8.5.2  CSR Bit Field Definitions, DEVICE_ID (offset: 00000000 ≈ 00000111) (reset:00h ≈ 07h)
      3. 8.5.3  CSR Bit Field Definitions, REV _ID (offset: 00001000) (reset: 01h)
      4. 8.5.4  CSR BIT Field Definitions - Misc Control (offset: 00001001) (reset: 02h)
      5. 8.5.5  CSR BIT Field Definitions - Misc Control (offset: 00001010) (reset: B1h)
      6. 8.5.6  CSR BIT Field Definitions - Misc Control (offset: 00001011) (reset: 00h)
      7. 8.5.7  CSR BIT Field Definitions - Misc Control (offset: 00001100) (reset: 00h)
      8. 8.5.8  CSR BIT Field Definitions - Equalization Control Register (offset: 00001101) (reset: 01h)
      9. 8.5.9  CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00001110) (reset: 00h)
      10. 8.5.10 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00001111) (reset: 00h)
      11. 8.5.11 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00010000) (reset: 00h)
      12. 8.5.12 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00010001) (reset: 00h)
      13. 8.5.13 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00010010) (reset: 00h)
      14. 8.5.14 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00010011) (reset: 00h)
      15. 8.5.15 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00010100) (reset: 00h)
      16. 8.5.16 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00010101) (reset: 00h)
      17. 8.5.17 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00010110) (reset: 00h)
      18. 8.5.18 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00010111) (reset: 00h)
      19. 8.5.19 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00011000) (reset: 00h)
      20. 8.5.20 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00011001) (reset: 00h)
      21. 8.5.21 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00011010) (reset: 00h)
      22. 8.5.22 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00011011) (reset: 00h)
      23. 8.5.23 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00011100) (reset: 00h)
      24. 8.5.24 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00011101) (reset: 00h)
      25. 8.5.25 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00011110) (reset: 00h)
      26. 8.5.26 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00011111) (reset: 00h)
      27. 8.5.27 CSR BIT Field Definitions - RX Pattern Verifier Control/Status (offset: 00100000) (reset: 00h)
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Application Chain Showing DDC Connections
      2. 9.1.2 DDC Pull Up Resistors
    2. 9.2 Source Side Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
      4. 9.2.4 Sink Side Application
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
    3. 9.3 System Examples
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

10 Power Supply Recommendations

To minimize the power consumption of customer application, TMDS171 used the dual power supply. VCC is 3.3 V with 5% range to support the I/O voltage. The VDD is 1.2 V with 1.1 V to 1.27 V range to supply the internal digital control circuit. TMDS171 operates in 3 different working states.

  • o Power down Mode:
    • OE = Low puts the device into its lowest power state by shutting down all function blocks.
      • When OE is re-asserted the transitions from L→H will create a reset and if the device is programmed through I2C it must to be reprogrammed.
    • Writing a 1 to register 09h[3].
    • OE = High, HPD_SNK = Low
  • Standby Mode: HPD_SNK = High but no valid clock signal detect on clock lane.
  • Normal operation: Working in Redriver or Retimer
  • When HPD assert, the device CDR and output will enable based on the signal detector circuit result.
  • HPD_SRC = HPD_SNK in all conditions.

Table 36. Power Up and Operation Timing Requirements

INPUTS STATUS
HPD_SNK OE SIG_EN IN_CLK Device Mode HPD_SRC IN_Dx SDA/
SCL_CTL		 OUT_Dx
OUT_CLK		 DDC ARC Mode
X L H or L X X H RX Termination On Disable High-Z Disabled Disable Power Down Mode
L H H or L X X L RX Termination On Active High-Z Disabled Disable Power Down Mode
H H H or L X X H RX Termination On Active High-Z Disabled Disable Power Down Mode by W 1 to 09h[3]
H H H No Valid TMDS Clock X H D0-D2 disabled with RX Termination On, IN_CLK Active Active High-Z Active Active Standby Mode
(Squelch waiting)
H H H or L No Valid TMDS Clock Retimer mode H D0-D2 disabled with RX Termination On, IN_CLK Active Active High-Z Active Active Standby Mode
(Squelch waiting)
H H H Valid TMDS Clock Retimer mode H RX Active Active TX Active Active Active Normal operation
H H H or L No Valid TMDS Clock Redriver mode H RX Active Active TX Active Active Active Normal operation