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Altera_Forum
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14 years ago

Stratix II configuration problems

Hello, I'm using Quartus-II V8.1 and would prefer to stay with that version if all possible because of legacy systems. I have a custom board that uses a Stratix II (EP2SF484C3) and a EPCS6...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Update:

The problem was two fold. One, I mistakenly connected the nCS pin instead of the nCSO pin (D11). I corrected this by cutting the nCS trace and soldering on a jumper from nCSO to pin 8 on the Active Serial 10 pin header. Also I added a 10K pull-up resistor. Unfortunately, after doing so, it still didn't work. Second, one of our Tech's here had a good idea of placing weight on the FPGA. After do this, it fired up properly 100% of the time. There must have been a problem with bonding the FPGA to the board (gold).