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CHung's avatar
CHung
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

timing report in quartus

Hi,

Sometimes I found that timing reports in Timing Analyzer differs from timing Summary in Compilation Report.

For example, the Setup Summary at 900mV 100C corner is following figure.

The first one is PCIe clock, and slack is -0.693ns.

But, when I open Timing Analyzer and report timing of this clock,

it shows no timing violation.

The worst path is 0.048ns:

Does anyone know the reason?

Thanks.

3 Replies

  • sstrell's avatar
    sstrell
    Icon for Super Contributor rankSuper Contributor
    6 years ago

    That's certainly strange. Can you right-click the failing clock(s) in the compilation report and generate a timing report from there? Perhaps your report_timing command is not exactly matching up with what is shown as failing in the Compilation Report.

    #iwork4intel

    • CHung's avatar
      CHung
      Icon for Occasional Contributor rankOccasional Contributor
      6 years ago

      Hi @sstrell

      You are right.

      The command generated from compilation report is different from mine.

      My report_timing command set both startpoints and endpoints.

      Thanks.

  • KhaiChein_Y_Intel's avatar
    KhaiChein_Y_Intel
    Icon for Regular Contributor rankRegular Contributor
    6 years ago

    Hi,


    Since your question has been answered, I now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.


    Best regards,

    KhaiY