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Visitor II
June 30, 2025
Question

LSM6DSVQ sensor is holding the SDA line to low post I3C IBI specification getting violated.

  • June 30, 2025
  • 1 reply
  • 314 views

Two LSM6DSVQ IMU sensors have been interfaced on the same I3C IBI bus. In normal working scenario all the transfers be it from master or slave side are working fine.
In the problematic case while generating an IBI, from the waveform capture the SCL is being driven to low before SCL (incorrect start condition) and thereafter the SDA line is continuously held to low.

Which amongst the master and slave can be the reason for incorrect start condition and can this cause the slave to go in bad state leading to holding the SDA line to low?

Sudhanshu_0-1751292543029.png

 

 

    This topic has been closed for replies.

    1 reply

    ST Employee
    July 2, 2025

    Hi @Sudhanshu 

     

    This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly.

     

    Regards,

    Billy