Parametrs SPI communication DRV8308

Aleksei Sporyagin

Other Parts Discussed in Thread: DRV8308

Hello. What are parameters SPI communication DRV8308(what is level on SCK without impulse(no communication)?; data is sampled on the leading (first) or trailing (last) edge of SCK?). I developmental select this parameters, but I want confirmation.

over 9 years ago

0 Rick Duncan over 9 years ago

TI__Guru** 114905 points

Hi Aleksei,

Are you referring to SMODE = low or high?

For SMODE = low, please refer to section 7.6 of the datasheet, SPI Timing Requirements.

0 Aleksei Sporyagin over 9 years ago in reply to Rick Duncan

Prodigy 200 points

Hi. I ask CPOL(pulse direction), CPHA(phase) signal SCK. On time diagram datesheet is not understand.

0 Rick Duncan over 9 years ago in reply to Aleksei Sporyagin

TI__Guru** 114905 points

Hi Aleksei,

I am not sure I understand your question. What specific questions do you have on Figure 1, SPI Timing Diagram?

Please use the timing requirement number when asking your question.

When SMODE = 1,
the data is sampled on the rising edge of SCLK ( see numbers 4 and 5 of the timing diagram).
the SCLK is controlled externally. The external controller determines how the SCLK level when the transaction is complete.

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Parametrs SPI communication DRV8308