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Altera_Forum's avatar
Altera_Forum
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11 years ago

PLL Locking - Transient input clock

Hello, I am hoping someone can offer a bit of advice with respect to using a PLL to lock to a clock that is transient. Currently I have the differential clock signal entering on an clock input ...
Altera_Forum's avatar
Altera_Forum
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10 years ago

JFYI, you can have the PLL lock faster by setting to High BW, provided you have a clean clock that is not jittery.

However, it will still take some time until it locks.

Furthermore, when there is no refclk (since your clock is transient), your PLL will lose lock and then it takes time to re-lock.

So still it might not be the best solution to your problem.