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

4.3 Power-over-Coax Interface

The DS90UB954-Q1EVM offers two Power-over-Coax interfaces (PoC) to connect cameras through a coaxial cable with FAKRA connectors. Power is delivered on the same conductor that is used to transmit video and control channel data between the host and the camera. By default, 5V power supply is applied over the coax cable. Refer to for other PoC configurations.

Note:

For port RX0, the PoC network is configured for a DS90UB953-Q1EVM (or variant), and for RX1 the PoC network is configured for a DS90UB933-Q1. Only use a serializer EVM with the correct PoC network. To use PoC with two DS90UB953-Q1EVM (or variant) or DS90UB933-Q1 EVM's, one of the PoC networks must be reworked. You may also open the PoC circuit and power the serializer EVM directly from another supply.

For Power-over-Coax (PoC) on the EVM, the circuit uses a filter network as shown in #T3978478-1. The PoC network frequency response corresponds to the bandwidth compatible with DS90UB953-Q1EVM (or variant) chipsets.

GUID-05FA07D0-7486-4C90-8A94-92D9A8B02E88-low.pngFigure 4-2 Power-over-Coax Network For Use With DS90UB953
GUID-0A15BEF3-B894-4BB7-BD05-308F3A802DCB-low.pngFigure 4-3 Power-over-Coax Network For Use With DS90UB933
WARNING:

Verify that the Power-over-Coax voltage is properly set before plugging into RX0 or RX1. Power supply is not fused. Over-voltage will cause damage to boards directly connected due to incorrect input power supplies. DS90UB913A-Q1EVM is designed for a maximum of 5V PoC. To use DS90UB913A-Q1EVM with DS90UB954-Q1EVM, open J17 or J18 to disable PoC, and either power the DS90UB913A-Q1EVM separately or by applying 5V to the J17 or J18 pin on DS90UB954-Q1EVM.

Table 4-2 Power-over-Coax Power Supply Feed Configuration
ReferenceSignalDescription
J18VPOC_RX0This sets the voltage for Power-over-Coax on RX0
Jumper installed: +9V power supply from VPOC_LDO0_9V
Jumper Open: No PoC connected. Apply power to pin1 or leave open and power serializer separately.
J17VPOC_RX1This sets the voltage for Power-over-Coax on RX1
Jumper installed: +9V power supply from VPOC_LDO1_9V
Jumper Open: No PoC connected. Apply power to pin1 or leave open and power serializer separately.