SNLU254A November   2020  – July 2022 DS160PT801

 

  1.   Abstract
  2.   Trademarks
  3. 1EVM Control and Configuration Information
    1. 1.1 Retimer Pin Controls
    2. 1.2 USB-to-SMBus Interface
    3. 1.3 PCIe PRSNT# Signal Control and Configuration
    4. 1.4 PCIe Reference Clock Control and Configuration
  4. 2EVM Power
    1. 2.1 EVM Current Sensing
  5. 3SigCon Architect GUI
    1. 3.1 Setup and Installation
    2. 3.2 Configuration Page
    3. 3.3 Low-Level Page
    4. 3.4 EEPROM Page
    5. 3.5 Control Panel
    6. 3.6 High-Level Page
    7. 3.7 Diagnostic Page
    8. 3.8 Eye Monitor Page
  6. 4PCB Material Information
    1. 4.1 DS160PT801 PCB Design
    2. 4.2 DS160PT801 PCB Stackup
    3. 4.3 DS160PT801 PCB Power Distribution
    4. 4.4 DS160PT801 Local Decoupling
  7. 5DS160PT801X16EVM Schematic
  8. 6Hardware BOM
  9. 7Revision History

3.7 Diagnostic Page

GUID-20220603-SS0I-XSWV-R1CJ-L1Q5XRSXCVVD-low.png Figure 3-10 Diagnostic Page Screenshot

The Diagnostic page contains features of the retimer that are meant to be used for evaluating the signal integrity of a system. By using the PRBS Checker and PRBS Generator functions of the retimer, it is possible to determine the Bit Error Ratio (BER) of a channel. This operational mode of the retimer does not operate through the PCIe protocol. It forced the retimer to simply transmit an electrical pattern specified by a user. There is also an option to force the transmission of a specific PCIe compliance pattern. The fields available in this page are as follows:

  • Enable Button enables or disables the PRBS or compliance pattern generator with the specified pattern type and datarate. If using a PCIe compliance pattern, it is possible to also force a specific PCIe preset value for the transmitted signal.
  • Pattern Type Dropdown modifies the pattern that is transmitted by the retimer.
  • Data Rate Dropdown changes the datarate of the signal transmitted.
  • Preset Dropdown will change the PCIe of the output signal when a compliance pattern is selected in the pattern type dropdown.
  • Capture Period Dropdown modifies the time period used to capture and count errors using the PRBS Checker.
  • Turn ON* Button turns on the PRBS checker.
  • Turn OFF* Button turns off the PRBS checker.
  • Reset Checker* resets the error count for the PRBS checker.
  • Error Count Graph displays the amount of errors accumulated by the PRBS checker over time.
  • Clear Checker Button clears the error count graph.