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Altera_Forum
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12 years ago

800MHz counter on Cyclone ?

I need a high resolution (28 bits or more) with an 800MHz clock. Is it possible to use the VCO to clock a counter if I run the PLL with a M=8 multiplier with a 100Mhz to get a VCO of 800MHz ?
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

You might be able to generate it, but you'll violate the setup and hold of any internal logic.