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Altera_Forum's avatar
Altera_Forum
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14 years ago

PLLs could be used to reduce the influence of noise ?

Hi, I remembered that i read from somewhere that 2 PLLs can be used to reduce the influence of noise during data transfer? or during FIFO rate matching? when having 2 external clock source. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Although I have seen it work at removing noise, I wouldn't rely on it for that, i.e. the system shouldn't have clock noise to begin with. And if it loses lock(and allowing the system to see the problem) that is a lot better than a double-edge inside the fabric.