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ALTCLKCTRL vs PLL with 2 reference clocks

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shaiko

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Hello,

My Cyclone V design has 2 reference clock inputs.
I want to be able to manually switch between them during runtime.

I know that the ALTERA_PLL megafunction can be configured to receive 2 input clocks. I understand that it also provides a manual switchover signal to select between the 2.

I also know that Altera provides the ALTCLKCTRL megafunction - which if I understand correctly can serve as a clock MUX.

Which one should I use ? ALTERA_PLL with 2 inputs or ALTCLKCTRL ?
 

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