Forum Discussion
Altera_Forum
Honored Contributor
Honored ContributorPLL? Cyclone ii? I/o
Is it possible to use the Cyclone ii PLL to divide down a 37.5Mhz clock on a standard input/output pin. Does it need to be on a dedicated Pin?
Altera_ForumHonored Contributor
Honored ContributorYou need the dedicated clock pins for a clock input, as you can't feed a pll with a clock coming from any general purpose i/o pin. On the other hand any pin can be used as an output, with an impact on jitter, as Dave said.
