Datasheet

Preliminary Data Sheet
BMA400
Page 89 /
Confidential
BST-BMA400-DS000-00 | Version 0.1 | November 2017 Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
Register (0x38) ORIENTCH_CONFIG3
DESCRIPTION: duration for (stable) new orientation before interrupt is triggered
RESET: 0x00
DEFINITION (Go to register map):
Name
Register (0x38) ORIENTCH_CONFIG3
Bit
7
6
5
4
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
orient_dur
Bit
3
2
1
0
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
orient_dur
orient_dur: duration for (stable) new orientation before interrupt is triggered
duration is a multiple of the number of data samples processed (ODR=100HZ) from
the selected filter
Register (0x39) ORIENTCH_CONFIG4
DESCRIPTION: the register contains configurations for orientation changed interrupt
RESET: 0x00
DEFINITION (Go to register map):
Name
Register (0x39) ORIENTCH_CONFIG4
Bit
7
6
5
4
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
int_orient_refx_7_0
Bit
3
2
1
0
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
int_orient_refx_7_0
int_orient_refx_7_0: lsb of x-axis reference for orientation change evaluation
the value is a signed integer, either provided by the host (orient_refu=0) or automatically
the interrupt calculates abs(acc_x/y/z-int_orientch_refx/y/z)>orient_thres to determine
whether activity is sufficiently high on the x/y/z-axis to cause an interrupt trigger
int_orientch_refx = int_orient_refx_7_0 + 256*int_orient_refx_11_8
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Confidential and under NDA
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