LSM6DSTTR datasheet(55/180 Pages) STMICROELECTRONICS

55 / 180 page

DocID033525 Rev 2

55/180

LSM6DST

Functionality

180

Enabling the 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 21.

In order to enable/disable the OIS chain from the primary interface, the OIS_ON_EN bit in

the CTRL7_G (16h) register must be set to '1' from the primary interface.

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 LSM6DST 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.

Note:

The OIS_ON_EN bit is reset from the SW RESET procedure.

LSM6DSTTR Datasheet(PDF) 55 Page - STMicroelectronics