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UCD3138A: how to configure PMBUS_CLK and PMBUS_DATA to SCI or GPIO

Part Number: UCD3138A

Hi Team, 

Just want to check how to configure PMBUS_CLK and PMBUS_DATA to SCI or GPIO. 

my customer try to configure it as GPIO to simulate I2C sequence but cannot output high voltage.  Thanks. 

BRs

Given 

  • Given,

    I've not tried to configure those two pins to be SCI, but i tried to configure them to be GPIO. Please refer to the PMBCTRL3 register in program manual.

    Remember those two are open drain in hardware, so it requires external pull up resistor.

    Best Regards,

    Xuemei