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DRV8703-Q1: Write IDRIVE register before reading

Jonathan Navor
Genius 9475 points
Part Number: DRV8703-Q1

Hi Team,

Good day! This experience is from our customer. Could you please confirm if this behavior is intentional. Customer is do not use the DRV8703-Q1*EVM* only the DRV8703-Q1. 

When they try to write the IDRIVE register via SPI, writing fails (i.e. the register values are not changed).

However, when they read the same register before writing, writing is successful. 

Thank you in advance for the support. Thank you.

Best regards,

Jonathan

  • 0
    TI__Guru 55605 points

    Jonathan,

    This is unexpected.  Something must not be quite right with the SPI sequence.  Can they share logic plots or scope captures of the WRITE sequence that is failing and one of the READ/WRITE that is successful?

    Regards,

    Ryan