Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Critical Warning: Timing requirements not met

hi， these days,I'm learning timing constraints,and I failed to finish to my work. the reports say,from node “ set_ip_req” to node "set_ip_req_r",the slack is -0.818.the launch clock ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

You can't synchronously pass data between those clocks. A set_false_path would cut them. But you need to determine if that just makes the warning go away and there's still a problem, or if your design can handle an "unknown delay" on this path and work.