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Altera_Forum
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19 years ago

VCCA_PLLn

I know the Stratix II device handbook says I must connect the VCCA_PLLn even if I'm not using PLLn. But do I really have to? What will happen if I don't? I want to save all the power I can.
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Altera_Forum
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18 years ago

As long as you aren't using any PLLs then filtering isn't required. If you are using a subset of the PLLs then it is best practice to use filtering on the PLL VCCA pins.