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Altera_Forum
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16 years ago

open-drain/open collector type of output

Hi All, This might have been discussed before, but I didn't see a definite answer. I have one IO pins which I wanna assign it to be a open-drain type. I tried to add the following attribute ...
Altera_Forum's avatar
Altera_Forum
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16 years ago

The open-drain configuration is required to allow the pin to sink current.

Actually, Quartus will usually infer a IOE open-drain configuration from the code that gmstr posted.