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I thought timequest needs statements for that and the classic timing tool let us enter those in the menu.
We;; I wish it was all estimates but they are not. tCO is that of external input device, tSU & tH are those of external output device. Adding to them a true or estimated effect of board delays on both clk and data and that is when it gets nasty.
To make it more complicated you can also use above parameters in reverse sense i.e. tCO of fpga, tSU, tH of FPGA but it all ends up with same figures set input delay and set output delay.
but frankly it is sort of area that never gets easy...
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Ok, I get it. But then what do I rely, to put in consistent values ​​TimeQuest Analyzer Wizard? (values ​​tsu, tco, tpd)
Thaks, again.
Honored Contributor
