Occasional Contributor
Frequent ContributorHi Sir,
Sincerely sorry for the delay in response due to workload.
Thank you for the confirmation. I just want to make sure that it is not 2 CS.
Back to your question, you are saying that you are only able to get good output without any glitches when clock frequency is 450MHz. May I know how you see the glitches? Are you probing the EMIF pins? Did you run the calibration? If yes, is the calibration passing?
Regards,
Aida
Occasional ContributorI am not doing calibration at all. after generating .sof directly testing on hardware. Just seeing timing analyser before that for any problems. May i know how to do calibration..? And for 500MHz, it's working properly initially and after the fpga core temparature rising by 70c or more then i can see glitches in the data captured for it.
Occasional ContributorRightnow i did calibration for 450MHz clk for ddr3 and 533MHz for the same.. I can see some differences between them. But both reports calibration pass where as for 450MHz data captured is fine, 533MHz not fine(glithcy), can you review once and explain more about the situation because in online they are giving some FAQ for calibration failure only but my case is like calibration pass but data not good. RIght now I am using Altera's default settings for board and memory timing in EMIF IP. CAS Latency for read given as 11(max available), for write given as 8(max available)
