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Altera_Forum
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15 years ago

nConfig drops during power up and stays low after on Cyclone3 EP3C5E144

Hi All, i have a design using Cyclone3 EP3CE144 device, and the JTag programmer (USB Blaster) can't scan or find the device. The symptoms are: The device can't be scanned by programmer (USB...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

thanks, Chris. i have fixed the issue. how come nconfig is driven low if the Epad does not connected to gnd directly? maybe nconfig has I/O features? but datasheet says it is input only.