08-13-2018 11:05 AM
I am trying to establish an Aurora interface between to boards. I have two identical HTG-830 boards with SFP+ FMC boards on them. I have set up the Aurora IP the same on both boards..
Both boards work with an optical loopback cable. However, when I connect the boards together with an optical cable, I do not get a LANE-UP or CHANNEL_UP. I have tried different cables, different FMC boards, single SFP's, QSFPs... always the same. Any ideas what the problem could be or where to start looking.
08-13-2018 12:27 PM
I don't think so. I also tried two FMC boards with a single SFP+ transceivers that I have used in the past with an Aurora 8b/10b design on a VC709 and it had the same behavior.
08-15-2018 01:11 PM
I have "memory" of there being a minimum data rate that the 64/66 worked at, below that the recommendation was to use 8/10,
but I can't find the reference.
Have you trawled through the answer records for the core,
08-15-2018 01:40 PM
06-09-2021 11:33 AM
which FMC boards are your using? the model FM-S14?
In an case your FMC board should have on the top some switches. Those switches are meant to select the proper reference clock generated by the FMC board.
You have to check that this clock has the same values of the "GT Refclk (MHz)" of your Aurora IP core. In this condition the SFP communication should start working.
Hope this helps