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Altera_Forum's avatar
Altera_Forum
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11 years ago

[TimeQuest] false paths to/from/inside an hierarchy -> how to?

Hi All,

As for the TimeQuest, how can I put a false path for all the signals coming to/from a specific hierarchy and also for the signals inside of the hierarchy?

Thank you

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    set_false_path -to {*entity:inst|*}

    set_false_path -from {*entity:inst|*}

    Change the wildcarding as appropriate.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    11 years ago

    Would these commands also apply false paths between flops inside of the hierarchy?

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    11 years ago

    This would ONLY apply between flops, as that is all that is timed (except IO pins).

    What are you trying to cut? you realise that false paths basically just set an ignore list for timequest. You should be careful with false paths and ensure there really is no timing relationship between the two flops.