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Altera_Forum
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7 years ago

PLL Warnings appearing with Quartus Prime

Hi, I have three PLLs in my Cyclone V design. Since I moved from Quartus II v15.0.2 to Quartus Prime v17.1.1 I get these outlandish warnings appearing (see attached image). Does any one know w...
Altera_Forum's avatar
Altera_Forum
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7 years ago

To know if necessary PLL functionality has been discarded, you need to know what the designed functionality is. That's not obvious from the quoted warnings.

It can be better seen in the fitter resource utilization report. How is the PLL instantiated? If it's Megawizard generated IP, did you regenrate it with the recent Quartus version?