New ContributorQuartus used to report the min and max pll input frequencies in the PLL Usage Summary report. Where is that information now?
I have a source synchronous design there the transmitting device can have a different clock rate depending on some settings. I need to know my switch over points for PLL reconfiguration and I need to come up with a minimum number of settings to cover my desired range.
Regular ContributorHi Brian,
Yes, Quartus does not report the Minimum/Maximum lock input frequency for the PLL.
However we have to manually calculate it.
Fin min = VCO min frequency x N / M x C
Fin max = VCO max frequency x N / M x C
C/K is Post-scale counter.
For VCO min/max frequency refer respective device Datasheet.
Please go through below KDB link for more information.
https://www.intel.com/content/www/us/en/programmable/support/support-resources/knowledge-base/solutions/rd07262010_609.html
Let me know if this has helped resolve the issue you are facing or if you need any further assistance.
Regards
Anand
