LSM6DSOX datasheet(34/199 Pages) STMICROELECTRONICS

34 / 199 page

Figure 22. Auxiliary SPI full control (a) and enabling primary interface (b)

UI/OIS

I3C/SPI/I2C

Camera Module

OIS Driver

Image

Sensor

Actuator

SPI_Aux

UI/OIS

I3C/SPI/I2C

Camera Module

OIS Driver

Image

Sensor

Actuator

SPI_Aux

(a)

(b)

6.5.1.2

Enabling primary interface

This option allows the application processor to enable/disable the OIS functionality from the primary interface. An

example of this option is shown in Figure 22.

In order to enable/disable the OIS chain from the primary interface, the OIS_ON_EN bit in the CTRL7_G (16h)

Then, enabling OIS functionalities and reading from the Auxiliary SPI can be done from the primary interface by

setting the OIS_ON bit in CTRL7_G (16h) to ‘1’. This bit also turns on the gyroscope OIS chain.

The configuration of the OIS functionalities must be implemented from the Auxiliary SPI through the

SPI2_INT_OIS (6Fh), SPI2_CTRL1_OIS (70h), SPI2_CTRL2_OIS (71h), and SPI2_CTRL3_OIS (72h) registers.

The camera module can verify that the AP has enabled the LSM6DSOX OIS chain by reading the

SPI2_WHO_AM_I (0Fh) register. The bit OIS_EN_SPI2 is kept under reset.

The Primary Interface can access the OIS control registers (UI_INT_OIS (6Fh), UI_CTRL1_OIS (70h),

UI_CTRL2_OIS (71h), UI_CTRL3_OIS (72h)) in read mode.

Note:

If the accelerometer Ultra-Low-Power Mode is active when activation of the OIS is required, the device must be

set in Power-Down mode before enabling the OIS chain.

The OIS_ON_EN bit is reset from the SW RESET procedure.

6.5.1.3

Primary interface full control

This option allows the application processor to configure all OIS functionalities from the primary interface. This

option allows using embedded OIS data for both the main and front camera, connecting them to the application

processor (eventually adding a context hub) as shown in Figure 23: the AP can also do some processing on the

data before sending them to the cameras.

In order to place the device in this mode, the OIS_CTRL_FROM_UI bit in the FUNC_CFG_ACCESS (01h)

LSM6DSOX

OIS

DS12814 - Rev 3

page 34/199

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