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DRV8904-Q1: Operation when accessing a Reserved register

Part Number: DRV8904-Q1

All bit fields of "OP_CTRL_2" , "OP_CTRL_3" and "FW_CTRL_2" are Reserved.

What action does the driver take when sending an instruction to write data of "0x00" to "OP_CTRL_3" and "FW_CTRL_2" ?

What action will the driver take if it sends an instruction to write data in which "any bit is 1" to "OP_CTRL_2" ?

  • Hi,

    Thank you for your questions.

    As mentioned on datasheet page 105, reseeded bits should be considered as reserved locations, and the register contents should not be modified.

    No action is expected by programing 0x00 OP_CTRL2, OP_CTRL3, FW_CTRL2, but not recommended to program them intentionally.

    Not recommended to program 1.

    regards

    Shinya Morita