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Altera_Forum
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11 years ago

problem with JTAG configuration cyclone III

Hi, I am using cyclone III, epc3c10k. I have a problem of configuration from JTAG using usb blaster. Where I try to programming from quartus the JTAG can’t work. I connected the ncomfig, ...
Altera_Forum's avatar
Altera_Forum
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11 years ago

If you think all the power pins are connected correctly (as well all the ground pins) and you've done everything else you've stated then I would expect the device to appear in the JTAG chain when you scan it.

So, I can only recommend you check the resistor values you've actually fitted as the pull-up and pull-downs. If you've mistakenly fitted a value that's too low it certainly won't work.

I still suggest you post more of the schematic, just in case it reveals anything.

Beyond that, I'm afraid I suspect damage to the device :oops:

Cheers,

Alex