DRV8804: SPI communication protocol, register description or programming instructions of DRV8804

Danilo A.

Mastermind 26500 points

Part Number: DRV8804

Hi Team,

A customer is looking for SPI communication protocol, register description or programming instructions of DRV8804.

Regards,

Danilo

over 4 years ago

0 Wang5577 over 4 years ago

TI__Guru 56650 points

Danilo,

DRV8804 is not a SPI device. Please check the datasheet 7.3.2 Serial Interface Operation and 6.6 Timing Requirements for Serial Interface detail.

0 Danilo A. over 4 years ago in reply to Wang5577

TI__Mastermind 26500 points

Hi Wang Li,

Thank you for the clarification. It seems the customer is not familiar with D-flip flop or timing diagram, do we have a programming instructions for DRV804?

Regards,

Danilo

0 Wang5577 over 4 years ago in reply to Danilo A.

TI__Guru 56650 points

Danilo,

1. SDATIN signal controls the OUTx pin's output. SDATIN Data (expected OUTx high or low value.) is shifted into a temporary holding shift register (LATCH pin doesn't allow the data passing to OUTx) in the part using the SDATIN pin, one bit at each rising edge of the SCLK pin. For example: if they want OUT1 high, OUT2 low; OUT3 high; OUT4 low. They just send SDATIN low high low high signal.

2. After SDATIN data is sent out, a rising edge on the LATCH pin latches the data from the temporary shift register into the output stage.

0 user6418426 over 4 years ago in reply to Wang5577

Prodigy 30 points

thank you very much!

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DRV8804: SPI communication protocol, register description or programming instructions of DRV8804