7 – Manufacturing Test
IGLOO2 FPGA Evaluation Kit User Guide
53
Figure 27.
Enabled Internal Loopback
10. Click
Enable PRBS Gen+checker
to enable PRBS check.
Figure 28.
Enabling PRBS Generator
Figure 29
shows PRBS gen status indicator in green after clicking Enable PRBS Gen+checker.
Figure 29.
Enabling PRBS Pattern Generation
Once the PRBS GEN+CHECKER is enabled, observe the PRBS error count for Lane0. It should be 0. 0
on PRBS error count shows that the internal loopback test is successful for SERDES lane 0. Value
otherthan 0 indicated that the internal loopback test is not successful and it has the number of errors it
shown.
11. Click
Disable PRBS Gen +checker
to stop the packet transmission and click
Disable Near (TX to RX)
loopback
to disable the loopback. After clicking, Near LPBK status and PRBS gen status indicators
change to red.