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BISIK's avatar
BISIK
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7 years ago
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Timing analysis after analysis&synthesis step in Quartus 14.

I want to find maximum frequency(or slack time) of an arithmetic operation in Quartus14. But Timequest analyzer, give a Run Fitter before Timequest error, when creating nets. Is there a way without complete place&route, doing timing analysis?

  • sstrell's avatar
    sstrell
    7 years ago

    You can create a post-map timing netlist (you have to choose it manually from the Netlist menu in the timing analyzer) and perform an analysis on that, but it won't represent final timing in the design.

3 Replies

  • GuaBin_N_Intel's avatar
    GuaBin_N_Intel
    Icon for Contributor rankContributor
    7 years ago
    I presume NO for your question. To do any timing analysis, user must pass through synthesis and fitter. Without creation of netlist that targeting to a specific device, you won't get the Fmax result.
  • sstrell's avatar
    sstrell
    Icon for Super Contributor rankSuper Contributor
    7 years ago

    You can create a post-map timing netlist (you have to choose it manually from the Netlist menu in the timing analyzer) and perform an analysis on that, but it won't represent final timing in the design.

  • BISIK's avatar
    BISIK
    Icon for New Contributor rankNew Contributor
    7 years ago

    Thanks @sstrell​ , I know, there is an option in Vivado. After "synthesis", it's possible to see timing, results change after implementation bevause of routing factors.

    But I wasn't sure in Quartus.

    Then, as you say, I select post-timing from netlist menu. Netlist loaded in TimeQuest.

    Thanks.