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Honored Contributor
Honored ContributorPLL issues in EP3C16
I'm sure I'm missing something simple here. I have a VHDL state machine that is running from a 50MHz input clock, and I want to boost that to 100MHz using a PLL. Either the PLL is not locking or I ...
Altera_ForumHonored Contributor
Honored ContributorIf you can validate you are not receiving a Lock signal, check the VCCA inputs (should be 2.5V).
I know the PLL's are sensitive to ripple on this supply, But My typical experience was it would still lock most of the time, but occasionally would loose lock or take longer to lock than expected.
