Synthesis lib
25% is used in syn or sta?
how can i create a clk with 25% timing margin, "period" or "uncertainty"?
thanks a lot.
Added after 9 minutes:
There is another question.
If there are a few clocks from the same pll and they have different periods, such as 83.3ns, 16.6ns, 33.3ns, how can I create the "margin"?
method 1:
define the period : 83.3*75%, 16.6*75%, 33.3*75%
method 2 :
define the period : 83.3-C, 16.6-C, 33.3-C, C is a fixed value
thanks a lot