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Altera_Forum's avatar
Altera_Forum
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17 years ago

Timequest and PLL jitter

Hi, is it necessary to specify any timing jitter when using PLL outputs in an SDC file i.e. as well as the derive_pll_clocks command? Is there anything else I need to do to make sure I'm covering...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

I think I spoke too soon. I have had my rig off for about an hour and it was fine on power up and then things started to go flaky after a few minutes. A quick squirt of freeze-it quietens the problem down (it's a DSP audio application).

So, it is definitely timing related...