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Altera_Forum
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16 years ago

Adding a second PLL to Cyclone III EP3C16

Connecting a PLL to the first input clock (pin 31) compiles OK. But when I try to add a second PLL driven from the second clock pin (pin 32) I get the following error: Error: promoted fro...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Thanks both. The pins were OK, they are both proper clock pins.

I found a solution by accident by playing with the PLL parameters:

Setting OPERATION_MODE to "NO_COMPENSATION" (originally it was NORMAL) fixed it.