Datasheet

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>
Magnetometer operation mode
6
00b
Normal mode
01b
Forced mode
10b
Reserved, do not use
11b
Sleep Mode
6
See chapter 4.2 for a detailed description of magnetometer power modes.