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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

Open drain pin assignment

Does anyone know how to make an output pin open drain? I made an open drain assignment to an output pin in the assignment editor, but Quartus ignores it.
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

In Quartus II assignment editor, you can set the pin as auto open drain.

You can also set it in *.qsf file:

set_instance_assignment -name AUTO_OPEN_DRAIN_PINS ON -to XXXXX