NuvKFC
Contributor
ContributorHow to use "set_max_skew" constaint?
As title. I had try set_max_skew command for following design. But it doesn't work.
And there is nothing to be reported by report_max_skew command in TimeQuest.
How to know that following constraints are true or fail?
Design:
module A (
input a, b;
output e, f;
wire c, d;
B B1(a,b,c,d);
B B2(c,d,e,f);
endmodule
module b (
input a,b;
output c,d;
assign c=a;
assign d=b;
endmodule
Constraint: <-- I set max skew on the different group net a and b.
set_max_skew 1.0 -from [get_ports [list a b]] \
-to [get_nets [list c d]] \
-include {intput_delay output_delay}
Thank you very much.
