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roeekalinsky's avatar
roeekalinsky
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4 years ago

Optimal frequency selection for IOPLL's VCO: minimize or maximize?

Is best IOPLL performance obtained by minimizing the VCO frequency, or maximizing it? The IOPLL IP generator GUI appears to be confused on this issue, at least for Stratix 10. It describes one thin...
roeekalinsky's avatar
roeekalinsky
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4 years ago

Thanks, @Ash_R_Intel.

Yes, I'm aware that the S10 IOPLL is not identical to the A10/C10GX IOPLL. I only mentioned the latter for added context, but my question is specifically about the S10, where the S10 IOPLL IP generator is not self-consistent.

No, I'm not asking because of any particular timing or functional issue at this time. I'm developing a configurable generalized design that uses the S10 IOPLL, and so I want to make sure I capture the optimal configuration guidelines for my design's configuration matrix.

Thank you for taking the observed inconsistency in the S10 IOPLL IP generator to engineering for clarification. I'll look forward to hearing back from you.

Thanks,
-Roee