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AGime3's avatar
AGime3
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7 years ago

What does it mean when configuration fails, and nSTATUS stays low and pulses high?

Hi all, We are using a MAX10 (10M08DAF256C8G) for one of our projects. We try to program either a .SOF or .POF we get a failure. Yet when we check the JTAG chain, it reports successful. The erase c...
ShafiqY_Intel's avatar
ShafiqY_Intel
Icon for Frequent Contributor rankFrequent Contributor
7 years ago
Hi AGime3, Have you check your nSTATUS voltage? I suspect your nSTATUS voltage is not stable. And one more thing, can you also check the nCONFIG pin & nCONFIG voltage? Let me know the result. Thanks
  • AGime3's avatar
    AGime3
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    7 years ago

    Hello MShafig,

    So we have checked all voltages on our board. Our nSTATUS pin is connected to a 10k pull up to 2.5v. The 2.5v is stable we have scoped it through many cycles of trying to program the chip to see if the voltage sags but we get nothing. We have also checked the 1.25v supply as well and it is stable as well.

    The nCONFIG pin is connected the same way to 2.5v through a 10k resistor. The nCONFIG voltage is stable and is always high.

    please let me know if you can think of any other problems as we have kind of run out of ideas and have tried everything on this forum. We have done many designs with many MAX10 and Cyclone chips, but this is the first time we use one that has an internal AD, and this is the first one we are having real trouble with. Thanks for your response and looking forward for your next.