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Altera_Forum's avatar
Altera_Forum
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16 years ago

Multicylcle Constraints with TimeQuest

Hey everybody! I have a serious problem with appying multicycle contraints to my design and would be glad if somebody could help me out with this: Basically i want to use the multicylcle pat...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

The hold multicycle looks too relaxed. Change the hold multicycle value to 3 and see if you get a hold violation.

Hold multicycle values in SDC start at 0 (the default hold check), which is usually one clock edge before the setup's latching edge. Therefore, to perform a hold check against the launching edge (i.e., a hold relationship of zero), use the setup multicycle value minus 1.