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Altera_Forum's avatar
Altera_Forum
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15 years ago

help on PLL input frequency

My source clock could range from 25MHz to 165MHz depending on the video format. Is there a way to ensure the PLL will lock onto it. I also need the output clock to be 90 degree shifted. I don'...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I read that solution yesterday. What that method do is it helps you extract valid parameter values for the PLL. You can put in Fmin for clko and Fmax for clk1, it tells you if your input goes beyond the lock range that the PLL is capable of, so it is not what I'm looking for.