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Altera_Forum
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15 years ago

EP2 won't AS configure, nCONFIG stuck lo

EP2C5Q208 will not AS configure itself. Circuit is exactly as Fig. 13-7, page 13-20 in Cyclone2 Device Handbook, Vol. 1 for a single device. Configuration device is EPCS4. (Using USB Blaster Quart...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

The problem as described at post# 1 was resolved by observing I had two of the configuration signals connected together that should not have been. After fixing this, however, Active Serial Configuration Stage does complete, i.e. CONFIG_DONE never goes high.

Also, I still have the problem that programming the EP2C5 with JTAG does not work. The Programmer message states:

Info: Configuration succeeded -- 1 device(s) configured

but the FPGA does not do anything programmed. I will start another thread describing the latest trouble.