EyeQ Panel (Receiver/Transceiver)

You open this Advanced panel by clicking the receiver or transceiver EyeQ button on the Receiver Channels tab or Transceiver Links tab of the Transceiver Toolkit.

Allows you to control and monitor high-speed serial link EyeQ tests, which displays test results as either a bathtub curve or eye contour that represents monitored bit error and phase offset data. If you make physical media attachment (PMA) settings or hardware changes, you should click Reset and restart the test from the beginning. The following options are available.

Checker mode—Allows you to choose between the Data pattern checker or Serial bit comparator. This feature is available when you turn on Enable EyeQ block and Enable Bit Error Rate Block in the Transceiver Reconfiguration Controller.

Note:

You do not need a Data Pattern Checker in the design when you use the Serial Bit Comparator.
If you are using a link, selecting a PRBS pattern will still send that pattern from the Data Pattern Generator, but the pattern is checked by the Serial Bit Comparator.
In Bypass mode, clicking Start does not start the Data Pattern Generator, but begins counting on the Serial Bit Comparator.

Run length—Specifies the following options for testing:
Time limit
Maximum tested bits
Error rate limit: Start checking after
Bit error rate achieves below
Bit error rate exceeds
Receiver settings—Allows you to control receiver settings during EyeQ tests.
Transmitter settings—Allows you to control transmitter settings during EyeQ tests.
EyeQ settings—Specifies settings that determine the display of EyeQ test results.
- EyeQ mode—Allows you to specify Eye contour or Bathtub curve as the type of EyeQ graph generated by the test.
- Target bit error rate—Allows you to find the contour edge of the bit error rate that you select. This option only applies to eye contour mode.
- Horizontal phase step interval—Allows you to specify the number of horizontal steps to increment when performing a sweep. Increasing the value increases the speed of the test but at a lower resolution. This option only applies to eye contour.
- Vertical phase step interval—Allows you to specify the number of vertical steps to increment when performing a sweep. Increasing the value increases the speed of the test but at a lower resolution. This option only applies to eye contour.
- 1-D EyeQ mode—Ignores the vertical step settings for EyeQ. This feature should be used when DFE is on and the EyeQ mode is set to Bathtub curve.
  Note: 1-D EyeQ mode is only available on Stratix V production devices. Stratix V ES devices do not have the necessary hardware for this feature.

EyeQ status—Displays a graphical representation of signal integrity as an eye contour or bathtub curve plot.
Run table—Lists the statistics of each EyeQ test run. The run table is sortable. You can right-click any of the tests in the table and then click Apply Settings to Device to quickly apply the chosen PMA settings to your device. You can click Import to load reports from previously generated EyeQ runs into the run table. You can click Export to export single or multiple runs from the run table to a report.
Create Report—Opens the Report panel, which lists EyeQ runs.