the priority order of synthesis constraints?

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huckle189

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There are many types of constraints - false, multicycle, set_input_delay, set_output_delay, etc

Can anyone give a complete list of the order is which constraints have priority?

Thanks,
 

I think there's no priority order for some constrains. Because most of them MUST be set, missing anyone will not get correct result.

To setup the constrains I think you need to do in the following step:
1. define clocks: period, skew, etc
2. I/O timing: input/output delay
3. exceptions: false path, multi-cycle path
4. special setting: max_delay, min_delay, etc.
 

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