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Altera_Forum's avatar
Altera_Forum
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18 years ago

Why dese my Nios II Development Kit(2C35) often reset automatically?

I have bought a Nios II Development Kit(2C35) . It often reset automatically when I communicated with Computer through Ethernet . I do not know why? Who can give me some advice?
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

I know NIOS II kits reset itself after configuration if you set the unused pins to drive ground. This is because the nConfig pin is tied to one of the unused IO. Not sure what happened to yours if it reset because of connection to PC using ethernet.

Maybe you can try to set the unused pins to be input tri-stated and see if it helps. Driving ground sometimes draw a lot of current as well if you have pull up resistors to the unused pins.