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Altera_Forum
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8 years ago

Can 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...
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Altera_Forum
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8 years ago

Yes, in Cyclone IV a GPIO cannot drive a PLL ...

With careful design you can build a 4 MHz signal from this 10 MHz clock, but only with a 40/60 duty cycle. Careful as in: if you want to use this 4 MHz as a clock you have to watch out for glitches.