This debug option is used to check and see the eye diagram of the serial link at the
desired link speed. For more information on In System IBERT, see
In-System IBERT LogiCORE IP Product Guide
(PG246).
Important: This
option is used mainly for hardware debug purposes. Simulations are not supported when this
option is used.
Steps to check the eye diagram:
- Select a suitable AMD reference board.
- Configure the core with the following options:
- Select the Gen3, Gen2 or Gen1 link speed at any link width.
- Select the Enable In System IBERT option in the Add. Debug Options page.
- Open the Example Design.
- Generate a .bit file and .ltx file.
- Open Hardware Manger (HM) and configure the FPGA using the generated .bit and .ltx file.
- Reboot the machine to rescan and to run the enumeration process again.
- Select the Serial I/O links tab at the bottom of the HM, and create links for the scan window.
- Select any one of the links in Serial I/O links tab, and right-click and choose scan link option.
- For better results try Horizontal and Vertical increment by 2 instead the default value.
- After the eye scan is selected, the eye diagram will be plotted.
Important:
Enable In System IBERT
should not be used with the Falling Edge Receiver Detect option in GT
Settings tab.