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Altera_Forum
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8 years ago

Using SignalTap to capture high rate clocks?

Hello, I would to know how accurate SignalTap is when capturing signals such as an 80-Mhz clock from a pll that is used to drive logic? When I view such a signal I see a non 50-percent duty cycle clo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

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Hi corestar,

Thanks for adding in your comments. I'm trying to view an 80Mhz signal that drives my HDL module. The signal is from a pll with an input clock of 80Mhz.

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This sounds like a clock? why are you trying to signaltap it? it either works or it doesnt. Usually you would capture the locked signal, or output to an LED or something.