LSM9DS1TR datasheet(64/72 Pages) STMICROELECTRONICS

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Magnetometer register description

LSM9DS1

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DocID025715 Rev 3

8.6

CTRL_REG2_M (21h)

8.7

CTRL_REG3_M (22h)

Table 112. CTRL_REG2_M register

0(1)

1. These bits must be set to ‘0’ for the correct operation of the device.

FS1

FS0

0(1)

REBOOT

SOFT_RST

0(1)

Table 113. CTRL_REG2_M register description

FS[1:0]

Full-scale configuration. Default value: 00

Refer to Table 114

REBOOT

Reboot memory content. Default value: 0

(0: normal mode; 1: reboot memory content)

SOFT_RST

Configuration registers and user register reset function.

(0: default value; 1: reset operation)

Table 114. Full-scale selection

FS1

FS0

Full scale

± 4 gauss

± 8 gauss

± 12 gauss

± 16 gauss

Table 115. CTRL_REG3_M register

I2C_

DISABLE

0(1)

1. These bits must be set to ‘0’ for the correct operation of the device.

0(1)

SIM

MD1

MD0

Table 116. CTRL_REG3_M register description

I2C_DISABLE

Disable I2C interface. Default value 0. (0: I2C enable; 1: I2C disable)

Low-power mode configuration. Default value: 0

If this bit is ‘1’, the DO[2:0] is set to 0.625 Hz and the system performs, for each

channel, the minimum number of averages. Once the bit is set to ‘0’, the magnetic

data rate is configured by the DO bits in the CTRL_REG1_M (20h) register.

SIM

SPI Serial Interface mode selection. Default value: 0

(0: SPI only write operations enabled; 1: SPI read and write operations enable).

MD[1:0]

Operating mode selection. Default value: 11

Refer to Table 117.

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