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Honored Contributor

9 years ago

Can't close timing on one clock domain

Hi, I've been struggling to close timing on one clock domain in my design, happens to be the one with all my control logic/ nios on it so is kind of important for getting into functional test....

multiple-attachments.zip334 KB

Altera_Forum

Honored Contributor

9 years ago

Looks to me like you have legit timing problems, as in your logic just can't run at 200MHz. You're at or well beyond the fmax for Nios II on Cyclone V depending on which Nios flavor you're running. See Table 2 in this document:

https://www.altera.com/en_us/pdfs/literature/ds/ds_nios2_perf.pdf

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Can't close timing on one clock domain

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