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Altera_Forum
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8 years ago

MAX 10 FPGA power-on/configuration error

I have a custom board with a 10M25SAE144xxx part that I am trying to bring up, but the device seems to be failing configuration at power-on. This is a single-supply device, and power is applied thro...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

I did get this resolved by replacing the part. On the original part we went over every pin (all 144 of them) re-flowing solder, checking continuity, checking voltages, and making sure there were no solder bridges to adjacent pins, but everything checked out and it still did not work. We replaced the part, assuming that it was bad, and the replacement part worked.

One thing I had been confused about was when I should expect the nSTATUS and CONF_DONE pins would go high. To me the documentation was not clear, so I had been thinking that they should go high (through the pull-up resistors) shortly after power was applied. I found that they would actually do this after connecting with the JTAG programmer and configuring/loading the .sof file. I'm not sure when during this process that happens, but noticed it when I was able to finally get the programmer to recognize the part and then I did the download and checked the pin voltages afterward.