Forum Discussion

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

Which bank 1 pins are 3,3V????

Hello everybody, does anybody know which pins in Cyclone III I/O bank# 1 are 3,3 V standard. First I thought the JTAG pins J1, J2, J5 and J6. But now I read that they are at 2,5 V? The bac...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

If it's actually one pin, and not resulting from an I/O standard you have assigned, it may be an AS interface pin (assuming you selected AS configuration in device settings). I recently reported a similar problem, it has been caused by a Quartus bug to my opinion.

http://www.alteraforum.com/forum/showthread.php?t=2139

If you selected AS configuration, change to passive serial, just for trial. Otherwise, you could assign no pins in bank 1 at all and check, what appears in fitter pin-out file then after compilation.