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Altera_Forum
Honored Contributor
11 years agonstatus get low periodic
it is a new board,VCCINT is 1.14V,VCC is 3.32V .VCCA is 2.48V,VCCD_pll is 1.15V.JTAG can not find the device. when I check the state of FPGA,I find that pin of con_done is low, and pin of nSTATUS...
Altera_Forum
Honored Contributor
11 years agoWhich configuration scheme are you using? Check the configuration mode setting the Qaurtus II under the Device and Pin option settings.
Make sure the nCONFIG need to the be high all the time before the nSTATUS goes high. If the nCONFIG goes low with during the configuration which will cause the nSTATUS to go low too. In this case you need to check the POR (power on reset) monitored power supply when the moment nCONFIG or nSTATUS goes low.