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DRV8316C-Q1: Read and Write programming procedure through SPI interface

Part Number: DRV8316C-Q1
Other Parts Discussed in Thread: DRV8316,

Tool/software:

Hi Team,

Customer said that it is not changed to their desired value properly if they write a specific register and read it for programming their board. Please check the details below and let me know the reason why.

DRV8316_read and write procedure.pdf

Also, please answer me about additional questions below.

1. What is the data value that is returned if reading control register1 after sending the unlock command? 0x03 or another value?

2. Is there a way to check if it's been unlocked/locked?

3. When writing to the control register, do I have to write after sending the unlock command for each register? or should I lock it after all the register settings are completed after unlocking?

Regards,