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TCAN1145-Q1: SPI read device-ID fail

Allen Lu
Intellectual 2510 points
Part Number: TCAN1145-Q1

hi team:

 my customer faces some read error issues during the development of the TCAN1145-Q1. That is, the corresponding configuration could not be read.

 And i attached the details as below. hopefully can get your support.

TCAN1145-Q1.xlsx

  • +1
    TI__Guru 53575 points

    Hi Allen,

    It looks like the MOSI data shown here is shifting data on the rising edge of SCLK. This is not consistent with the clock polarity used by TCAN1145. This transceiver samples data on the rising edge of SCLK and shifts data on the falling edge of SCLK. Please ensure the SPI controller is configured to use this clock polarity when interacting with TCAN1145. 

    All other data here, particularly the interrupt values and return data seem consistent with invalid or inconsistent SPI addressing, which can be caused by non-agreeing clock polarity. Let me know if this does not solve the issue and I can take another look. 

    Let me know if you have any more questions.

    Regards,
    Eric Schott