DRV8353F:   DRV8353F：DRV8353F： SPI Register Write Issue

Tool/software:

Subject: Register Write Issue (ADDR2/5/6)

Hi all, reopening this thread with a clearer description:

1. Normal Behavior

   • ADDR2 = 0x400 writes successfully.

2. Issue Observed

   • During incorrect operation, ADDR5 and ADDR6 unexpectedly accept 0x400 (not my target value).

   • But writing the correct 

3. Key Questions

   • Root cause? (e.g., address mapping conflict, clock sync, write protection?)

   • Any required pre-write sequence?
     
     ADDR2 write 0x400  correct 

     
     
     ADDR5 write 0x12D fail   (default 0x16d)
     
     
     ADDR5 write 0x400 successfully