Forum Discussion
Altera_Forum
Honored Contributor
9 years ago --- Quote Start --- Use the 'counter out to out cascade mode' of the Cyclone V PLL. For a 50MHz ref clock input (for example), use a multiply by 4 and divide by 25 to generate an 8.0MHz clock on pll_output_0. Then use pll_output_0 to pll_output_1 cascade mode with a division factor of 250 to generate 32.0KHz ( = 8.0MHz / 250 ) on pll_output_1. --- Quote End --- Hi, If I did this way, I got some error message like "the specified configuration causes VCO to go beyond the limit", and don't allow me to click finish button. what happen? Thanks, Jeff