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Found 1 result

  1. pfuhrman
    I have a Genesys ZU Rev. B board which comes up fine except the PMCU LED does not come on or blink at all, as it says in the reference manual. Nor can I turn on VADJ by outputting on the LEVEL0/1 and VADJ_AUTON signals from the 3EG chip. I have tried communicating with the ATMega over its serial port, but I get no response. For example, "0301" should return the firmware version. I have a logic analyzer on J36 to observe the startup I2C activity from the PMCU, but I see no activity at main power-on. I'm assuming that the PMCU is working since the ZU3EG comes up, but I also need