SNLU210C July   2016  – April 2024 DS90UB933-Q1

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
  6. 2Hardware
    1. 2.1 Requirements
    2. 2.2 Major Components of DS90UB933-Q1EVM
    3. 2.3 Board Setup Details
      1. 2.3.1 Power Connections
      2. 2.3.2 FPD-Link III Connection
      3. 2.3.3 LVCMOS Input Connector Description (on DS90UB933-Q1 Board)
      4. 2.3.4 Factory Set Switch Settings and Jumpers Default Configuration
        1. 2.3.4.1 Serializer Board Default Configuration
    4. 2.4 Operation with Deserializer
    5. 2.5 Troubleshooting the EVM Setup
  7. 3Software
    1. 3.1 Using I2C
      1. 3.1.1 Default Addresses
      2. 3.1.2 Analog Launch Pad (ALP)
  8. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
      1. 4.2.1 DS90UB933-Q1EVM Serializer Board Layout
    3. 4.3 DS90UB933-Q1EVM Serializer Board Bill of Materials
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Revision History

2.5 Troubleshooting the EVM Setup

  1. Check power supply polarity.
    WARNING: Reverse supply polarity can damage the board. Verify that the power supply polarity is correct before turning on the power supply.
  2. Check power over Coax configuration on deserializer board. Make sure correct voltage is applied (5V<=VPoC<=9V). (Refer to deserializer user's guide for jumper setup).
  3. Check to make sure there is sufficient current (500mA) by checking that the voltage (12V) is correctly applied to deserializer using DMM.
  4. Check to make sure there is a FPD-Link III signal by probing on both C17 and C19.
  5. Monitor the LOCK signal using oscilloscope on DES board. Do not rely on visual inspection of Lock LED present on deserializer board.
  6. With no PCLK input applied on SER board, PCLK output frequency on DES board must be 50MHz for the default settings.
    Table 2-1 PCLK Output (on DES) without Applying PCLK Input (on SER)
    Mode Selected PCLK Output Expected
    10 bit mode (default mode) 50MHz
    12 bit high frequency mode 37.5MHz
  7. Go back to double check factory settings.