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Altera_Forum
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16 years ago

ALTPLL 600MHz output

Hi, I need to get clarification on the ALTPLL in the Megawizard. I'm using a DE3 board and I want to run my verilog-code in 600MHz (just some simple registers for now), this should be po...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I feared something like this. A standard oscilloscope probe makes the signal quality considerably worse, also the GPIO connector PCB wiring isn't intended for high speed. You can route the PRBS signal to the clk_out connector to get an idea of the real waveform. Your oscilloscope would still not show a square wave due to bandwidth limitation, but it should look more regulare.