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Altera_Forum's avatar
Altera_Forum
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15 years ago

Help! --“msel” floating in cyclone ii design..

I know msel0 and msel1 should be connected to VCC or GND. but I forgot to connect them. when I debug the PCB,the cyclone ii device become very hot quickly! :( can it because of the "msel pro...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hi,

Is it a custom board ?

Msel problems ? I don't know. You can make a "service request" on Altera web site.

the cyclone ii device become very hot quickly if there are short-circuits with your board.

Have you configured unused pins as "input tri-stated" ?

By defaut, it is "output driving GND" which is a bad ideea in my opinion.