Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Cyclone II PLL clock multiplier

Hi, I'm looking for a way to take an unknown external clock in the range 1-5MHz and from it generate an internal clock that is exactly four times that external clock. I've been reading various...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

--- Quote Start ---

As pointed out, 1-5MHz is too slow for an Altera PLL. You'll need a dedicated clock multiplier chip, they are cheap and abundant from multiple sources.

--- Quote End ---

Thanks, I'll look into the dedicated chip solution.