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Altera_Forum
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15 years ago

Quartus Programmer "FACTORY" mode command

Hi All: We have a new board that just came in with a Cyclone III LS device: EP3CLS150F484. This is the first LS design we've done. We are having a cpu program the device though using the...
Altera_Forum's avatar
Altera_Forum
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15 years ago

Ok.. We were about to get it to work..

The FPP configuration issue was we missed the following statement in the configuration doc:

"Two DCLK falling edges are required after CONF_DONE goes high to begin the

initialization of the device."

This means the the device never entered user mode, so we were stuck in limbo.

As far as programming with the JTAG cable, once the configuration completed successfully, I could then re-program the device with no issues. This sounds opposite of what I expected. But I don't have any security setup for this guy yet.. The only thing I can think of is the CPU is perhaps hold nCONFIG or nSTATUS in the wrong state, and it's blocking JTAG.. ?? Don't know..

But we are running for now..

Pete