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Altera_Forum
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15 years ago

Cyclone III stuck at POR?

Hi, I have problems to get a custom board work, the FPGA seems to be stuck in POR. It's a PCIe card with a EP3C10F256C7N. I attached an excerpt of the schematic to this post. I have 10 pro...
Altera_Forum's avatar
Altera_Forum
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15 years ago

Downloaded the most recent handbook, in case my copy was too old.

VCC specs I saw in the handbook...

VCC must rise monotonically with no plateaus - checked that with a scope.

Each individual power supply should reach the recommended operating range within 50 ms - checked that too.