BOOSTXL-DRV8320S: register value

K.Hamamoto

Part Number: BOOSTXL-DRV8320S
Other Parts Discussed in Thread: DRV8320

Our customer evaluates DRV8320 with TI-EVM. And they have some question.

Before starting the evaluation,,They confirmed the initial value of each register. (It was ok) And they confirmed it can be written new value (0x0020) to (add:)0x02.

(There is no problem so far.)

Addr:0x00=0x0000, 0x01=0x0000, 0x02=0000, 0x03=0x03FF, 0x04=0x07ff, 0x05=0x0159

1. On the other hand, they wrote the new value (0x000) to 0x02 again. However it could not rewritten. (because the register value of respond was not 0x000. It was 0x0020.)

2. As same situation,they wrote the new value of 0x0334 to address:0x05.However the value of respond was 0x037D.

I do not uderstand why the register value was not expected register value which was written. What should we do? Or Do we need to execute anything command?

Best Regards,

Koji Hamamoto

over 5 years ago

0 Rick Duncan over 5 years ago

TI__Guru** 114905 points

Hi Hamamoto-san,

Please ask the customer to provide scope captures of the SPI transactions.

0 Hector Hernandez Luque over 5 years ago

TI__Expert 8980 points

Hi Hamamoto-san,

How is the customer writing the SPI commands? GUI orCode Composer Studio?

0 K.Hamamoto over 5 years ago in reply to Hector Hernandez Luque

Guru 12155 points

Hi Rick-san, Hector-san,

I appreciate your prompt reply. I will suggest the customer to get the waveform of communication signal. And I also are going to confirm the evaluation environment of the customer.

Again, I appreciate your quick support. Please close this post. I will post new one if I got new question.

Best Regards,
Koji Hamamoto

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BOOSTXL-DRV8320S: register value