L9733 Hardware integration and SPI access

Hi,

I designed a board integrating a High Side L9733.

I try to communicate with the switch through SPI but I miss some informations.

1- Can you confirm that we can use a 1.8V SoC as master?

I fixed VDO to 1.8V. I didn't find nominal range for VDO. (only absolute max rating -0.3V to 7V)

In my understanding, VDO allows me to set the VIH/VIL transition levels.

Attached to this post, the hardware integration of the L9733

2- What are the SPI write and read programming model of the L9733?

Master SPI config: 16b, CPOL=1, CPHA=1, LSB first.

If I assert CS (0) and write 0xAC00 or 0xAC01 and deassert CS (1), I receive always the same fault register value.

Thank you for your support.

Best regards,

Raphael

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