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Altera_Forum
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16 years ago

User I/O conflict with DCLK (Cyclone 3)

I have custom board with EP3C5E144 used for educational purposes. Board contains EPCS16, SRAM and some other peripheral. I create NIOS system with program stored in EPCS (it was made in accorda...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hello,

I believe your problem is that you have the default I/O voltage set to 2.5V.

Try changing it to 3.3-V LVCMOS in Settings -> Device -> Device Pins & Options -> Voltage.