Hi
I would like to incorporate the IP (Eyescan_subsystem) reference design provided by XAPP1198 and XAPP743 to plot the statistical Eye at the equalizer (ctle LPM) ouput on a GTX of the Kintex7 FPGA on KC705
I was successful in ploting the eye when I run the normal data case using Frame Gen & Frame check.
In this case I got the correct dumpfile ( which has # errors for different DRP addresses)
My problem is with the prbs as follows:
1. I wanted to use internal prbs31 data generated by GTX instead of external normal data
2. I verified that the prbs eye was on the TX port of the GTX being tested
3. I run the eyescan script ( provided by XAPP1198) and got a wrong dumpfile ( which does not show any # of errors)
My questions are as follows:
1. Why Eyescan_subsystem (XAPP1198) does not work for internal prbs ?
2. Xilinx IBERT application does show that statistical Eye could be plot using internal prbs ??
3. What signal I should use to reset the eye scan subsystem in case of prbs?
4. In case of normal data (with scrambler) I used track out data signal for reset and it works
James Bui