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Altera_Forum
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16 years ago

HELP ME about EP2C20Q240C8,PLEASE!

HI ALL I'm using the cycloneII(EP2C20Q240C8).I want to know what the difference the pin 178 and the others.when i use the pin 178 as LVTTL output,it cannot output a wave (frequency about 25MHz whe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

There should be no reason why pin 178 wouldn't function as you want it to.

I suspect you have a either a short between pin 178 and ground, or you are not looking at the right pin (because of a routing swap or so), or because in the logic project the signal is not placed on that pin.