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Altera_Forum's avatar
Altera_Forum
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12 years ago

problem JTAG programming an EPCQ256

I have a new terasic DE1-Soc rev D. Cyclone V SOC model 5CSEMA5F31C6N. I am unable to get JTAG programming to program the epcq256 on the board using quartus 14. I am able to download and run ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Yes, I tried both

Edit: When I set MSEL at 10010, MAX_AS_CONF is driven low (meaning Active Serial mode is enabled) but FPGA_nCS0 signal (EPCQ ncs input) is measured at 0.497V instead of GND.