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Altera_Forum's avatar
Altera_Forum
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16 years ago

How to multiply the frequency of a clock?

Hi, I want to multiply the 50 kHz clock signal frequency by 2048 in order to obtain about 100MHz frequency. However, the plls of Cyclone II board are supplying at least 300MHz frequency. How can I...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

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The digital PLL is a different approach than the VCO. Can I ask where this 50kHz clock is coming from?

Jake

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Another question is what are you doing with it? Is it possible to use the 50kHz to clock your signals into the design with FIFO's or domain crossing circuits? If you are going from 50kHz to 100MHz, the domain crossing is trivial. (just edge detect the input signals).