SNLS458B November   2014  – August 2019 DS90UH929-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Application Diagram
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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  DC Electrical Characteristics
    6. 6.6  AC Electrical Characteristics
    7. 6.7  DC And AC Serial Control Bus Characteristics
    8. 6.8  Recommended Timing for the Serial Control Bus
    9. 6.9  Timing Diagrams
    10. 6.10 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  High-Definition Multimedia Interface (HDMI)
        1. 7.3.1.1 HDMI Receive Controller
      2. 7.3.2  Transition Minimized Differential Signaling
      3. 7.3.3  Enhanced Display Data Channel
      4. 7.3.4  Extended Display Identification Data (EDID)
        1. 7.3.4.1 External Local EDID (EEPROM)
        2. 7.3.4.2 Internal EDID (SRAM)
        3. 7.3.4.3 External Remote EDID
        4. 7.3.4.4 Internal Pre-Programmed EDID
      5. 7.3.5  Consumer Electronics Control (CEC)
      6. 7.3.6  +5-V Power Signal
      7. 7.3.7  Hot Plug Detect (HPD)
      8. 7.3.8  High-Speed Forward Channel Data Transfer
      9. 7.3.9  Back Channel Data Transfer
      10. 7.3.10 Power Down (PDB)
      11. 7.3.11 Serial Link Fault Detect
      12. 7.3.12 Interrupt Pin (INTB)
      13. 7.3.13 Remote Interrupt Pin (REM_INTB)
      14. 7.3.14 General-Purpose I/O
        1. 7.3.14.1 GPIO[3:0] Configuration
        2. 7.3.14.2 GPIO_REG[8:5] Configuration
      15. 7.3.15 Backward Compatibility
      16. 7.3.16 Audio Modes
        1. 7.3.16.1 HDMI Audio
        2. 7.3.16.2 DVI I2S Audio Interface
          1. 7.3.16.2.1 I2S Transport Modes
          2. 7.3.16.2.2 I2S Repeater
        3. 7.3.16.3 AUX Audio Channel
        4. 7.3.16.4 TDM Audio Interface
      17. 7.3.17 HDCP
        1. 7.3.17.1 HDCP I2S Audio Encryption
      18. 7.3.18 Built-In Self Test (BIST)
        1. 7.3.18.1 BIST Configuration And Status
        2. 7.3.18.2 Forward Channel and Back Channel Error Checking
      19. 7.3.19 Internal Pattern Generation
        1. 7.3.19.1 Pattern Options
        2. 7.3.19.2 Color Modes
        3. 7.3.19.3 Video Timing Modes
        4. 7.3.19.4 External Timing
        5. 7.3.19.5 Pattern Inversion
        6. 7.3.19.6 Auto Scrolling
        7. 7.3.19.7 Additional Features
      20. 7.3.20 Spread Spectrum Clock Tolerance
    4. 7.4 Device Functional Modes
      1. 7.4.1 Mode Select Configuration Settings (MODE_SEL[1:0])
      2. 7.4.2 FPD-Link III Single Link Operation
      3. 7.4.3 Frequency Detection Circuit May Reset the FPD-Link III PLL During a Temperature Ramp
    5. 7.5 Programming
      1. 7.5.1 Serial Control Bus
      2. 7.5.2 Multi-Master Arbitration Support
      3. 7.5.3 I2C Restrictions on Multi-Master Operation
      4. 7.5.4 Multi-Master Access to Device Registers for Newer FPD-Link III Devices
      5. 7.5.5 Multi-Master Access to Device Registers for Older FPD-Link III Devices
      6. 7.5.6 Restrictions on Control Channel Direction for Multi-Master Operation
    6. 7.6 Register Maps
  8. 8 Application and Implementation
    1. 8.1 Applications Information
    2. 8.2 Typical Applications
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 High-Speed Interconnect Guidelines
      3. 8.2.3 Application Curves
        1. 8.2.3.1 Application Performance Plots
  9. 9 Power Supply Recommendations
    1. 9.1 Power-Up Requirements and PDB Pin
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging and Orderable Information

7.3.18.2 Forward Channel and Back Channel Error Checking

While in BIST mode, the serializer stops sampling the FPD-Link input pins and switches over to an internal all-zeroes pattern. The internal all-zeroes pattern goes through the scrambler, DC-balancing, and so forth and is transmitted over the serial link to the deserializer. The deserializer, on locking to the serial stream, compares the recovered serial stream with all-zeroes and records any errors in status registers. Errors are also dynamically reported on the PASS pin of the deserializer.

The back-channel data is checked for CRC errors once the serializer locks onto the back-channel serial stream, as indicated by link detect status (register bit 0x0C[0] - Table 8). CRC errors are recorded in an 8-bit register in the deserializer. The register is cleared when the serializer enters BIST mode. As soon as the serializer enters BIST mode, the functional mode CRC register starts recording any back channel CRC errors. The BIST mode CRC error register is active in BIST mode only, and the register keeps a record of the last BIST run until the register is cleared or the serializer enters BIST mode again.

DS90UH929-Q1 30193364.gifFigure 15. BIST Waveforms, in Conjunction With Deserializer Signals