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fogl's avatar
fogl
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Max10 conf_done stays low

Hello everybody, I am having problems with Max10 configuration. After I successfully program the fpga the conf_done pins stays low. Actually the conf_done pin goes high for a moment at the beginnin...
fogl's avatar
fogl
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Now I also set the DevCLRn and DEV_OE to tri-state input with a weak pull-up. But still the same.

I have got no more ideas.

Regards

fogl's avatar
fogl
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Hello,

Let me answer to myself The reason for such behavior was power supply failure. The fpga was configured correctly, but afterwards it turned on an electrical load (which should be turned on with a soft start) that caused a voltage drop on 3.3V power rail and reset of the fpga.

Regards

Klemen

  • ShafiqY_Intel's avatar
    ShafiqY_Intel
    Icon for Frequent Contributor rankFrequent Contributor
    5 years ago

    Hi fogl,

    Thank you for let's Intel FPGA community here know the solution/answer.

    Yes, some time the unstable power rail might cause an issue to FPGA pins. And worst part is when the pin is the Configuration pins(cause failure to configuration)

    Regards,

    Matt