Occasional Contributor
Frequent ContributorHi Sir, I understand your concern. However, usually the skew between data in and input clock is small and can be ignore. Unless it is critical in your board design and you are seeing the big skew between data and clock. With this you can manually change the - wafeform value for the input clock create clock command to compensate the board skew.
create_clock -name input_clock -period 10 -waveform { 2.5 7.5 } [get_ports clk_in]
Occasional ContributorHi BCT_Intel,
I have one more question, if the skew between data in and input clk is small and can be ignore, is there necessary for us to set constrains? It will be okay that we can only set the clock constarins (liking creat_clock -name input_clock -period 10 [get_ports clk_in])?
Best regards,
Lambert
Frequent ContributorIt is ok as long as you have the set_input_delay as explain above
