Multi Channel DMA Intel® FPGA IP for PCI Express User Guide

ID 683821
Date 1/14/2022
Public

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10.1.4.4. Eye Viewer

The P-Tile Debug Toolkit supports the Eye Viewer tool that allows you to plot the eye diagram for each channel. The Eye Viewer tool:
  • Provides a pictorial representation of the eye for each channel, both in the bifurcated (e.g., x8x8) and non-bifurcated (e.g., x16) configurations.
  • Provides information on the total eye height, total eye width and eye measurement information from the center of the eye to the four corners (left, right, top, bottom).
  • Uses fixed step sizes in the horizontal and vertical directions.
  • Performs the eye measurement at the following bit error rates (BER):
    • 8.0 GT/s (Gen3) @ e-8, 100% confidence level
    • 16.0 GT/s (Gen4) @ e-9, 90% confidence level
  1. In the System Console Tools menu option, click on Eye View Tool.
    Figure 60. Opening the Eye Viewer
  2. This will open a new tab Eye View Tool next to the Main View tab. Choose the instance and channel for which you want to run the eye view tests.
    Figure 61. Opening the Instance and Channel
  3. The messages window displays information messages to indicate the eye view tool's progress.
    Figure 62. Eye View Tool Messages
  4. Once the eye plot is complete, the eye height, eye width and eye diagram are displayed.
    Figure 63. Sample Eye Plot

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