Forum Discussion
Altera_Forum
Honored Contributor
16 years agoThe example in the cookbook seems to be wrong.
Your max output delay should specify everything that is not already known by TimeQuest, and that affects the setup relationship of the outputs. Anything that hurts should have a positive magnitude, and anything that helps, a negative one. In your case, all the parameters hurt (I think Rysc was thinking on system synchronous, but you are saying the clock is generated by the external device). So your set_output_delay max should be: max_data_board_delay + max_clock_board_delay + external_device_tSU. Note that the board delays "hurts" twice.