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TPS23881 I2C Communicate

INGU LEE
Prodigy 90 points
Other Parts Discussed in Thread: BOOST-PSEMTHR-007, TPS23881

hi 

i have Boost-PSEMTHR-007 and TPS23881EVN   

I am trying to connect my MCU using I2C with TPS23881 

like this .... 

and It is my result when i send bit through I2C 

 

but SDAO dosen't send Ack  

What is problem ... please help me 

  • 0
    TI__Mastermind 40100 points

    Hi Ingu,

    Sorry the picture is small to fully review. However, are you connecting your i2c lines directly at the ic or at TP4 and TP5? Can you try connecting to the test points instead?

    Also, when you power up the board, is the RESET of the PSE LOW while the VPWR is powering up before you do any I2C communication?

    Thanks!