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Altera_Forum
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15 years ago

EP3C25 nStatus 1V

I have five EP3C25 borad, 3 of them are working well. But the rest 2 will sometimes boot fail. The working mode is AS or fast AS from EPCS4. There're 10K pull up on nStatus, nConfig, Conf_done, MSELs...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Yes you are right, and it means the FPGA is not defective. Your problem could come from the fact that the MSEL pins are misread during POR. Unfortunately I guess there isn't an easy way to connect them to VCCA instead of VCCIO to test that hypothesis.