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SK-AM64B: "VCC3V3SYS_EXT" power supply not working.

Yong-jin Ju
Prodigy 10 points
Part Number: SK-AM64B

No power to "VCC3V3SYS_EXT". We bought a KIT, but "VCC3V3SYS_EXT" didn't come out, so we're looking into it. Is the KIT broken? 

  • 0
    TI__Expert 8275 points

    Hi Yong Jin Ju,

    Where have you probed on the AM64-SK? We have had success with testing this platform, including nightly Linux builds and an assortment of validation efforts. 

    Are you reviewing page six of the schematic, the "3V3 SUPPLY POWER FLOW" and testing voltages from the 3v3 source of the PMIC? Pages 41-42 have more information about the PMIC topology. Are you able to probe the TestPoints and relevant passive components? 

    Regards,

    Colin