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Joakim's avatar
Joakim
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

How to use D5_DELAY or D5_OE_DELAY on Cyclone V

I'm desperately trying to get the timing to work between my Cyclone V and an external CPU. Because of the clock delay, it seem to be impossible to get the timing to pass within one clock cycle, so I ...
Joakim's avatar
Joakim
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Are there any good documentation available on how to use the Output and Input Pin delay in a correct way.

I'm very confused about paths that appear to be very short, takes very long time to arrive, and the opposite.

I assumed that I would be able to see it in the delay registers in the Resource property editor, but the delay is always displayed as 0.

I also assumed that these delay circuits would be used to adjust the external timing, but can't see anything like this.