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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

I recently found out that VCCAs are all separate in the device, so you don’t need to decouple the ones you are not using, as JB said. However, you still must power unused PLLs’ VCCAs to the appropriate voltage level