Forum Discussion
Altera_Forum
Honored Contributor
9 years ago --- Quote Start --- The device handbook describes the limits for the PLL constants. You must stay within those limits. I suspect 250 is too large a divisor. --- Quote End --- Hi, Thanks for the replying. every one here is correct but I find when I choose "Enable physical output clock parameters" which can show M,N.C values, it doesn't allow me to "finish". Does any one know why? Thanks, Jeff