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Altera_Forum
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16 years ago

Cyclone III Configuration Corrupts !..

Hi everybody! I have a problem with my new cyclone III board design. I use EPCS16 for programming CycloneIII (EP3C25E144C8N) FPGA. Fpga starts configuration but can't finish it. in th...
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Altera_Forum
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16 years ago

Is this a development board, or a fresh, just-built board?

If it is a development board, it is possible that you have the EPCS16 configuration set improperly. The page for this is hidden in the assignments, under device, then under device and pin options. The settings should look probably be active serial (can use configuration device), EPCS16. You may need to also have the generate compressed bitstream button clicked.

If it is a new board, there could be quite a few things wrong. You could be missing pullups (check the Altera configuration app note). If the tracks between the configuration device, programming header and FPGA are particularly long, you can also end up with ringing on the clock line, but I've only seen this on really bad layouts. In general, the Altera parts are very forgiving.

I guess you should also check the obvious: make sure that the part on the board matches the part selected under Assignements->Device.

Good Luck