Datasheet

BMM150 Geomagnetic Sensor

Page 30

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 (0x50) contains the High-Threshold interrupt threshold setting. (Also refer to chapter 0

for the details of magnetometer interrupt operation and the threshold setting).

Table 22: High-threshold interrupt threshold setting control register (0x4F)

(0x50) Bit

Name

Description

Bit 7

HighThreshold <7>

Bit 7 of High-Threshold interrupt threshold setting

Bit 6

HighThreshold <6>

Bit 6 of High-Threshold interrupt threshold setting

Bit 5

HighThreshold <5>

Bit 5 of High-Threshold interrupt threshold setting

Bit 4

HighThreshold <4>

Bit 4 of High-Threshold interrupt threshold setting

Bit 3

HighThreshold <3>

Bit 3 of High-Threshold interrupt threshold setting

Bit 2

HighThreshold <2>

Bit 2 of High-Threshold interrupt threshold setting

Bit 1

HighThreshold <1>

Bit 1 of High-Threshold interrupt threshold setting

Bit 0

HighThreshold <0>

Bit 0 of High-Threshold interrupt threshold setting

5.8 Number of repetitions control registers

Register (0x51) contains the number of repetitions for x/y-axis. Table 24 below shows the

number of repetitions resulting out of the register configuration. The performed number of

repetitions nXY can be calculated from unsigned register value as nXY = 1+2xREPXY as shown

below, where b7-b0 are the bits 7 to 0 of register 0x51:

)

(

)

(

REPXY

b

b

b

b

b

b

b

b

nXY











































2

1

2

0

2

1

2

2

2

3

2

4

2

5

2

6

2

7

2

1

0

1

2

3

4

5

6

7

Table 23: X/y-axis repetitions control register (0x51)

(0x51) Bit

Name

Description

Bit 7

REPXY <7>

Bit 7 of number of repetitions (valid for XY)

Bit 6

REPXY <6>

Bit 6 of number of repetitions (valid for XY)

Bit 5

REPXY <5>

Bit 5 of number of repetitions (valid for XY)

Bit 4

REPXY <4>

Bit 4 of number of repetitions (valid for XY)

Bit 3

REPXY <3>

Bit 3 of number of repetitions (valid for XY)

Bit 2

REPXY <2>

Bit 2 of number of repetitions (valid for XY)

Bit 1

REPXY <1>

Bit 1 of number of repetitions (valid for XY)

Bit 0

REPXY <0>

Bit 0 of number of repetitions (valid for XY)

Table 24: Numbers of repetition for x/y-axis depending on value of register (0x51)

(0x51)

register

value

(binary)

(0x51)

register

value

(hex)

Number of repetitions for x- and y-axis each

00000000b

0x00h

1

00000001b

0x01h

3

00000010b

0x02h

5

00000011b

0x03h

7

…

…

11111111b

0xFFh

511