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Altera_Forum
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19 years ago

Cyclone III AS configuration bizarreness

I am using a cyclone III (EP3C25F324C8N) with an EPCS16 configuration device. I am programming the configuration device through the FPGA with the serial flash loader. The problem is that the Cyc...
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Altera_Forum
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18 years ago

I've been using a Cyclone III with a EPCS128. My JTAG port works fine for debug &etc and I can program the EPCS128 OK using a separate header connected to it as per data sheet. In the latter case the Cylone subsequently configures fine from the EPCS128 at power up. However, if I program the EPCS128 via the JTAG port using a JIC file, while programming apparently completes successfully, the Cylone won't subsequently initialise. So it may be that it's something to do with the JIC file??

I'm presuming you've fitted the series resistor on the data pin of the serial memory? If not, this might explain why a bit of capacitance on the clock helps.

Regards

Andy