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

3.8 Eye Monitor Page

GUID-20220603-SS0I-P4QB-4173-J03CWSW6NWNP-low.png Figure 3-11 Eye Monitor Page Screenshot

The Eye Monitor page allows a user to check the eye openining of a signal at the retimer receiver after completing CTLE and DFE equalization. This feature can only be used reliably when a PCIe link is stable enough to maintain the L0 link state. The fields available in the Eye Monitor page are as follows:

  • Single Capture Button creates a single eye diagram from in the incoming signal on the selected channel and stops capturing.
  • Continuous Capture monitors the eye diagram from in the incoming signal on the selected channel by continuously creating eye diagrams unil the user stops the capture.
  • Stop Capture stops a continuous capture.
  • Recompute HEO/VEO performs a quick measurement of the HEO and VEO of a channel. This method uses the same technique on the high-level device status page to calculate the HEO and VEO.
  • Rx Margin Count Select Dropdown selects the number of bits used when performing Rx margining.
  • Rx Margin Error Select modifies the maximum number of errors allowed for each sample point when performing Rx margining.
  • Export Raw Data Button exports the pass or fail results of an eye diagram measurement.
  • Export Density exports the results of an eye diagram including error density information.
  • Clear Plots clears the Raw Data, Error Hit Count, and Contour data graphs.