Forum Discussion
lkg47
New Contributor
New Contributorhow to set the delay for an asynchronous input
Hello, please help:
async port --- "data"
pll clk --- clk_1
how to set constraints that define difference between delay lines "data ---> R3|clk" and "data --->R1|d"
ak6dn
Regular Contributor
Regular ContributorWhy would you use that circuit?
How are you going to use the output of R3? In what clock domain? Are you going to run it thru another dual rank synchronizer to access it in clock domain clk_1? Or what?
set_min_delay and set_max_delay are the sdc primitives you can use to constrain the net delays between the referenced ports.
Never heard of set_data_delay. Where is there a reference to that?
