SNLU223D August   2017  – February 2023 DS90UB954-Q1

 

  1.   DS90UB954-Q1EVM Deserializer User's Guide
  2. 1 Trademarks
  3. 2 Introduction
  4. 3 Quick Start Guide
    1. 3.1 System Requirements
      1. 3.1.1 Included Components
      2. 3.1.2 Additional Required Components
    2. 3.2 Applications Diagram
    3. 3.3 Major Components of DS90UB954-Q1EVM
    4. 3.4 DS90UB954-Q1EVM Setup
  5. 4 DS90UB954-Q1EVM Board Configuration
    1. 4.1 Default Configuration
    2. 4.2 Power Supply
    3. 4.3 Power-over-Coax Interface
    4. 4.4 MIPI CSI-2 Output Signals
    5. 4.5 FPD-Link III Signals
    6. 4.6 I2C Interface
    7. 4.7 Control Interface
  6. 5 Enable and Reset
  7. 6 Use with DS90UB936-Q1
  8. 7 Typical Connection and Test Equipment
  9. 8 Termination Device
  10. 9 Typical Test Setup
  11. 10Equipment References
  12. 11Cable References
  13. 12Software for DS90UB954Q1-EVM Evaluation - Analog LaunchPAD (ALP) Software Setup
    1. 12.1 System Requirements
    2. 12.2 Download Contents
    3. 12.3 Installation of the ALP Software
    4. 12.4 Startup - First Launch
  14. 13Using ALP and DS90UB954 Profile
    1. 13.1 Information Tab
    2. 13.2 Registers Tab
    3. 13.3 Registers Tab - Address 0x00 Expanded
      1. 13.3.1 Port Specific Registers
      2. 13.3.2 36
    4. 13.4 Saving and Loading Register Settings
    5. 13.5 Scripting Tab
      1. 13.5.1 Example Functions
        1. 13.5.1.1 Local I2C Reads/Writes
        2. 13.5.1.2 General I2C Reads/Writes:
        3. 13.5.1.3 I2C Reads/Writes with Multi-Byte Register Addresses
    6. 13.6 GPIO Tab
    7. 13.7 Forwarding Tab
    8. 13.8 CSI Registers Tab
    9. 13.9 Remote Registers Tab
  15. 14Troubleshooting ALP Software
    1. 14.1 ALP Does Not Detect The EVM
    2. 14.2 USB2ANY Firmware Issues
  16. 15DS90UB954-Q1EVM PCB Schematics, Layout and Bill of Materials - DS90UB954-Q1EVM Schematic
  17. 16DS90UB954-Q1 EVM PCB Layout
  18. 17DS90UB954-Q1EVM Bill of Materials
  19. 18Revision History

4.6 I2C Interface

In addition to the on-board USB2ANY controller accessible via the mini-USB port, a standalone external I2C host can connect via J25 for programming purposes. Examples of external I2C host controllers are Texas Instruments USB2ANY and Total Phase Aardvark I2C/SPI host adapter (Total Phase Part#: TP240141).

When the I2C interface is accessed through connector J25, I2C signal levels can be configured through J16 to be at 1.8V or 3.3V. Optional access to I2C signals are also available via CSI-2 connectors J24 (top) and J26 (bottom).

Table 4-5 IDx I2C Device Address Select - J23
Reference Signal Description
J23 IDX Select Selects I2C Device Address
Open: 0x30 (7'b) or 0x60 (8'b)
Short: 0x3D (7'b) or 0x7A (8'b) (Default)
Table 4-6 I2C Interface Header - J25
Reference Signal Description
J25.1 GND Ground
J25.2 I2C_SDA I2C Data Interface for I2C bus
J25.3 I2C_SCL I2C Clock Interface for I2C bus
J25.4 VDDIO I2C bus voltage (tied to VDDIO)