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Altera_Forum
Honored Contributor
Honored ContributorCan cyclone III comes into the user mode if AP config failed?
Original tille: "Can cyclone III comes into the user mode if AP config failed?" I can't find the EP3C120F780I7N when scan the JTAG chain. I want to kown what happend when nSTATUS and CONF_...
Altera_ForumHonored Contributor
Honored ContributorThe FPGA should always answer on the JTAG pins, even if it failed during the configuration phase. Do you have pull-ups on nSTATUS, CONF_DONE and nCONFIG?
Do you have power to all the I/O banks, and all the PLL supplies? Can you check the soldering of the FPGA balls?
