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Altera_Forum
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14 years ago

Timing Not Being Constrained?

My problem is that my design passes timing closure no matter how I constrain it (well almost). In particular, if I constrain the output timing like this; create_clock -name {real_clock} -perio...
Altera_Forum's avatar
Altera_Forum
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14 years ago

OK, I tried to post as little as possible since I didn't want it to get too complicated. The clock grouping goes;

set_clock_groups -asynchronous -group {real_clock}

set_clock_groups -asynchronous -group {real_clocka}

set_clock_groups -asynchronous -group {real_clockb}

There's no reference to the virtual clock in my grouping. What you're saying is perhaps that's the problem?