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mstef1's avatar
mstef1
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7 years ago

HI, I have a board with a cyclon iv and EPCS64 but te fpga does not strt the programming cycle. I attached the schematic page and the test program I am using. please any help will be appreciated maurizio stefani

HI, I have a board with a cyclon iv fpga. I am using the AS programming mode using a EPCS64. I programmed the EPCS64 but the FPGA is not programmed. I noted: - nCONFIG signal goes low but the nSt...
mstef1's avatar
mstef1
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7 years ago

HI,

again I checked the nSTATUS signal with and without pull-up resistor. the signal remains "low".

I checked the power voltages and they are ok.

the 1.2 and 2.5V rise fastly, the 3.3V .

please find attached the 3.3V power-up sequence

maurizio