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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

Thank you for your quick reply.

I have created a mini project containing only the most vital parts, see attached FX3GPIF qar file.

It shows about the same issue, you can easily add / remove the multicycle statement in the sdc file.

With the multi cycle statement I get D5 OE Delay chain as 31, and 0 without it.

BR / Joakim