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Altera_Forum's avatar
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

The reason must then be searched in the logic. If you say that pin 178 outputs a 'slow' signal, how slow is this then? I suggest you make a small project that only drives this pin as the output of a counter? In fact this morning I did make such a small project to simulate to some extent what you are doing, so I just add the .qar for your perusal.