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Altera_Forum
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14 years ago

trouble programming epcs4

hi i have made a custom board using epc5 (having epcs4). i have made a small program to blink leds. i am able to program the sof file using jtag. but when i try to burn the epcs4 using active ...
Altera_Forum's avatar
Altera_Forum
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14 years ago

I may be missing something but it seems that you forgot to connect the EPCS nCSO and ASDI pins to the FPGA. Also why doesn't the resistor on PDATA use a correct reference designator? Are you sure it got on your PCB?

With a proper connection between the FPGA and the EPCS you should be able to access the flash through the FPGA's JTAG interface and an SFL design. I'm not sure why the verification fails on your hardware when you use the dedicated interface though.