Datasheet

BMM150 Geomagnetic Sensor

Page 27

BST-BMM150-DS001-01 | Revision 1.0 | April 2013

Bosch Sensortec

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third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

Register (0x4C) contains control bits for operation mode, output data rate and self-test.

The two “Adv. ST” bits control the on-chip advanced self-test (see chapter 4.4.2 for details of the

magnetometer advanced self-test).

The three “Data rate” bits control the magnetometer output data rate according to below Table

17.

The two “Opmode” bits control the operation mode according to below Table 18 (see chapter

4.2 for a detailed description of magnetometer power modes).

Table 16: Operation mode, output data rate and self-test control register (0x4C)

(0x4C) Bit

Name

Description

Bit 7

Adv. ST <1>

Advanced self-test control bit 1

Bit 6

Adv. ST <0>

Advanced self-test control bit 0

Bit 5

Data rate <2>

Data rate control bit 2

Bit 4

Data rate <1>

Data rate control bit 1

Bit 3

Data rate <0>

Data rate control bit 0

Bit 2

Opmode <1>

Operation mode control bit 1

Bit 1

Opmode <0>

Operation mode control bit 0

Bit 0

Self Test

Normal self-test control bit

Three “Data rate” bits control the output data rate (ODR) of the BMM150 magnetometer part:

Table 17: Output data rate (ODR) setting (0x4C)

(0x4C)

Data rate <2:0>

Magnetometer output data rate

(ODR) [Hz]

000b

10 (default)

001b

2

010b

6

011b

8

100b

15

101b

20

110b

25

111b

30

Two “Opmode” bits control the operation mode of the BMM150 magnetometer part:

Table 18: Operation mode setting (0x4C)

(0x4C)

Opmode <1:0>

00b

Normal mode

01b

Forced mode

10b

Reserved, do not use

11b

Sleep Mode