LSM6DSV datasheet(37/187 Pages) STMICROELECTRONICS

37 / 187 page

6.7

Enhanced EIS

The LSM6DSV offers advanced design flexibility for EIS applications: enhanced EIS functionality has a dedicated

channel and processing with independent filtering.

Enhanced EIS main features:

•

Enhanced EIS channel gyroscope data can be read over the primary interfaces through I²C / MIPI I3C® /

SPI;

•

EIS data are available in free-run mode in the output registers (UI_OUTX_L_G_OIS_EIS (2Eh) and

UI_OUTX_H_G_OIS_EIS (2Fh) through UI_OUTZ_L_G_OIS_EIS (32h) and UI_OUTZ_H_G_OIS_EIS

(33h)) by setting the G_EIS_ON_G_OIS_OUT_REG bit to 1 in the CTRL_EIS (6Bh) register or in FIFO (by

setting the G_EIS_FIFO_EN bit to 1 in the FIFO_CTRL4 (0Ah) register) with dedicated TAG and timestamp

configurable using FIFO_CTRL4 (0Ah);

•

Enhanced EIS option is compatible with mode 3 selection. When EIS data-out are intended to be read from

the output registers (setting G_EIS_ON_G_OIS_OUT_REG bit), data from the gyroscope OIS chain can be

only read from the auxiliary SPI interface.

Figure 23. LSM6DSV supports UI, enhanced EIS and OIS processing simultaneously

UI / EIS

Block

EIS

Camera

module

Auxiliary

SPI

Primary

output

I2C/MIPI I3C /SPI

Figure 24. Gyroscope enhanced EIS and UI block diagram

ADC

LPF EIS

LPF UI

FS UI

FIFO

SPI / I2C/

MIPI I3C

UI Channel

EIS Channel

FS EIS

When enhanced EIS mode is activated through the ODR_EIS_[1:0] bits in the CTRL_EIS (6Bh) register:

•

Gyroscope UI can be configured only in power-down mode or high-performance mode;

•

Gyroscope EIS full scale can be selected by using the FS_G_EIS_[2:0] bits in the CTRL_EIS (6Bh) register;

•

Gyroscope EIS data rate selectable at 1.92 kHz or 960 Hz configurable through the ODR_G_EIS_[1:0] bits

in the CTRL_EIS (6Bh) register;

•

LPF_EIS low-pass filter (refer to Figure 24) bandwidth selection can be configured through the

LPF_G_EIS_BW bit in the CTRL_EIS (6Bh) register.

LSM6DSV

Enhanced EIS

DS13476 - Rev 2

page 37/187

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