SNLS650 May   2019 DS90UB949A-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Applications 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 FPD-Link III Port Register Access
      11. 7.3.11 Power Down (PDB)
      12. 7.3.12 Serial Link Fault Detect
      13. 7.3.13 Interrupt Pin (INTB)
      14. 7.3.14 Remote Interrupt Pin (REM_INTB)
      15. 7.3.15 General-Purpose I/O
        1. 7.3.15.1 GPIO[3:0] and D_GPIO[3:0] Configuration
        2. 7.3.15.2 Back Channel Configuration
        3. 7.3.15.3 GPIO_REG[8:5] Configuration
      16. 7.3.16 SPI Communication
        1. 7.3.16.1 SPI Mode Configuration
        2. 7.3.16.2 Forward-Channel SPI Operation
        3. 7.3.16.3 Reverse Channel SPI Operation
      17. 7.3.17 Backward Compatibility
      18. 7.3.18 Audio Modes
        1. 7.3.18.1 HDMI Audio
        2. 7.3.18.2 DVI I2S Audio Interface
          1. 7.3.18.2.1 I2S Transport Modes
          2. 7.3.18.2.2 I2S Repeater
        3. 7.3.18.3 AUX Audio Channel
        4. 7.3.18.4 TDM Audio Interface
      19. 7.3.19 Built-In Self Test (BIST)
        1. 7.3.19.1 BIST Configuration and Status
        2. 7.3.19.2 Forward-Channel and Back-Channel Error Checking
      20. 7.3.20 Internal Pattern Generation
        1. 7.3.20.1 Pattern Options
        2. 7.3.20.2 Color Modes
        3. 7.3.20.3 Video Timing Modes
        4. 7.3.20.4 External Timing
        5. 7.3.20.5 Pattern Inversion
        6. 7.3.20.6 Auto Scrolling
        7. 7.3.20.7 Additional Features
      21. 7.3.21 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 Modes of Operation
        1. 7.4.2.1 Single-Link Operation
        2. 7.4.2.2 Dual-Link Operation
        3. 7.4.2.3 Replicate Mode
        4. 7.4.2.4 Auto-Detection of FPD-Link III Modes
        5. 7.4.2.5 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
      7. 7.5.7 Prevention of I2C Faults During Abrupt System Faults
    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
  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 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.5.2 Multi-Master Arbitration Support

The Bidirectional Control Channel in the FPD-Link III devices implements I2C-compatible bus arbitration in the proxy I2C master implementation. When sending a data bit, each I2C master senses the value on the SDA line. If the master is sending a logic 1 but senses a logic 0, the master has lost arbitration. It will stop driving SDA and retry the transaction when the bus becomes idle. Thus, multiple I2C masters may be implemented in the system.

Ensure that all I2C masters on the bus support multi-master arbitration.

Assign I2C addresses with more than a single bit set to 1 for all devices on the I2C bus. 0x6A, 0x7B, and 0x37 are some examples of good choices for an I2C address. 0x40 and 0x20 are some examples of bad choices for an I2C address.

If the system does require master-slave operation in both directions across the BCC, some method of communication must be used to ensure only one direction of operation occurs at any time. The communication method could include using available read/write registers in the deserializer to allow masters to communicate with each other to pass control between the two masters. An example would be to use register 0x18 or 0x19 in the deserializer as a mailbox register to pass control of the channel from one master to another.