Forum Discussion

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

Cyclone III - PLL VCO range ?

Hello, What is the frequency range of CycloneIII PLL VCO ? PDF writes 600-1300MHz, but altpll withard creates PLLs with frequencies less than 350MHz. For PLL reconfiguration feature it's ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

It's surprising that megawizard allows for a value that goes below specified minimum value. May be the document specifies preliminary values subject to characterization of the device - Just a guess. I guess, it would be better to go with the value that is referred to by the megawizard.