Forum Discussion
Knug
Contributor
Contributorset_input_delay / set_output_delay -min query
I currently have a query wrt set_input_delay / set_output_delay -min (wrt hold) :
My example below :
#************************************************************** # Create Clock #***********...
KnugContributor
ContributorHi @sstrell
>> output min = data trace (min) - clock skew (max) - Th
Is this right?
Shouldn't it have been :
output min = data trace (min) - clock skew (max) + Th
sstrell
Super Contributor
Super ContributorNo, it's correct. You subtract the hold requirement to get the smallest amount possible (-min), even if it's negative.
And clock uncertainty constraints are used to describe the properties for a clock. They don't constrain a clock directly.
