Forum Discussion
Altera_Forum
Honored Contributor
Honored ContributorCan I produce 4 MHz from a 10 MHz input?
Hi All, I have a Cyclone IV board. Can I produce 4 MHz from a 10 MHz input? I am totally new to this field. I can produce 4 MHz using the 50 MHz on-board clock using PLL. But it seems GPIO ca...
Altera_ForumHonored Contributor
Honored ContributorSee the second page of this PDF: https://www.mikrocontroller.net/attachment/177197/xl33_30.pdf
That's a divide by 2.5 digital circuit which could be implemented in an FPGA. 10MHz / 2.5 = 4MHz. It's not going to be a clean clock, there will be quite a lot of jitter, and it is not 50% duty cycle (gives 40% duty). It could be usable for many designs so long as you don't need sub-nanosecond accuracy.
