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Altera_Forum
Honored Contributor
Honored Contributorset_max_skew command
I'm clocking a data bus out of my Cyclone V and want to constrain the maximum skew between data lines. I'm using; # 100 ps max skew set_max_skew -to [get_ports data_out [*]] 0.1 It seem...
Altera_ForumHonored Contributor
Honored ContributorOK, I guess I don't really understand the function of the set_max_skew directive (I hesitate to call it a "constraint" because it doesn't appear to constrain anything). In my design, TQ knows my clock rate (from create_clock and derive_pll_clocks). I don't specify any set_output_delay. I assumed that set_max_skew would constrain the maximum skew between the lines in my data bus.
