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Altera_Forum
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10 years ago

MAX10 Internal Configuration Error

Hi everybody, I'm actually working with the new MAX 10M02SCE144C8GES and I have problem with the internal configuration which doesn't work. The FPGA works good when I program it with the .sof ...
Altera_Forum's avatar
Altera_Forum
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10 years ago

I am running a custom board and have the exact same problem with an ES 10M08 with single A/D and flash options. SOF program works POF does not, tried every config option updated Quartus etc.

Solution was conf_done was not pulled high with an external weak pull up (10K)

See pg 4 of the pin connection guideline under the conf_done section which reads

"After all configuration data is received without error and the initialization cycle starts, the CONF_DONE pin is released."

It is my assumption without a pull up the device itself dosn't recognize config is complete. This can be seen as all pins are stuck in the programming mode HighZ/week pull up/down whatever is selected and never drop to user mode configs.

While pulling up only the conf_done pin worked, I believe a good recommendation would be to pull up conf_sel, n_status, conf_done and n_config