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Altera_Forum
Honored Contributor
Honored ContributorDoes PLL VCCA require isolation if PLL isn't used?
Hi Folks, I'm currently designing a board with an EP1C3T100 that doesn't use the PLL. When checking the Cyclone manual for board layout best practice it recommends isolating VCCA. I quote - ...
Altera_ForumHonored Contributor
Honored ContributorThe purpose for isolating the power to the PLL is to minimize jitter on the PLL's clock outputs. If you're not using the PLL, no need to reduce the jitter. Still, I'd at least follow FvM's guidelines and add proper bypass.
Jake
