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Altera_Forum's avatar
Altera_Forum
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13 years ago

Is it ok to build for a SV -2 speed grade and run on a -3 part?

Hey, - This post if for Rysc or anybody else who knows how timequest really works... Thanks a ton for your excellent write-up on source synchronous analysis. It is the best I have seen. Looks ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

AFAIK Timequest always uses the worst case for hold requirements, whatever the speed grade. But I'm afraid you'll have a problem with the setup requirements, as a -2 grade is faster than a -3 and makes it easier to pass them.

So if is the other way round. If you compile a project for -3 it can be run on a -2 without any problems, but a project compiled for a -2 may not run on a -3.