Am Donnerstag, 13. August 2015 21:00:07 UTC+2 schrieb kaz:
I have seen random/strange issues with Altera FIFOs in the past more than o nce (but still seldom). In that cases I replaced the FIFOs with "home grown " ones and the problems were solved. I never tracked that down in detail (m aybe it was related to the clear signal in some way...) and I also cannot r emember details (one or two clocks, same or different width in/out), I have used so many FIFOs (mostly successfully) over the years...
I would suggest to look at all inputs and outputs of the FIFO with SignalTa p and see if it behaves correctly.
P.S.: Oh, I just read your initial post that you cannot reproduce it in the lab...
P.P.S.: I have googled around to find an old post of me regarding this. I f ailed. But I found this:
So I would suggest to replace the FIFOs with a home grown approach and look if this solves the issues in field...
Regards,
Thomas