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Altera_Forum
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14 years ago

How do I know the clock uncertainty and in/output delays?

Hi all, To constrain my design, I suppose we need to constrain the clock uncertainty and input/output delays. But how could I know what values should I put for set_clock_uncertainty(for ex...
Altera_Forum's avatar
Altera_Forum
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14 years ago

And there are three kinds of exceptions: false path, minimum/maximum delay, multicycle;

I know what're the first and last about. But when could the designer make a min/max delay exception? And what would be the delay values based on?