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BMX160 Datasheet(HTML) 89 Page - Bosch Sensortec GmbH

Part No. BMX160
Description  Small, low power 9-axis sensor
Download  113 Pages
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Maker  BOSCH [Bosch Sensortec GmbH]
Homepage  https://www.bosch-sensortec.com
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BMX160 Datasheet(HTML) 89 Page - Bosch Sensortec GmbH

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BMX160
Data sheet
Page 89
BST-BMX160-DS000-12 | Revision 1.2 | January 2019
Bosch Sensortec
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third
parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany. Note: Specifications within this document are preliminary and
subject to change without notice.
There are three settings to balance between sensitivity (false negatives) and robustness (false
positives):
Normal mode:
Recommended for most applications. Well balanced between false positives and false negatives.
STEP_CONF[0]: 0x15 (0b0001 0101)
STEP_CONF[1]: 0x03 (0b0000 0011) (the step_cnt_en bit is set to 0)
Sensitive mode:
Recommended for light weighted persons. Will give few false negatives but eventually more false
positives.
STEP_CONF[0]: 0x2D (0b0010 1101)
STEP_CONF[1]: 0x00 (0b0000 0000) (the step_cnt_en bit is set to 0)
Robust mode:
Will give few false positives but eventually more false negatives.
STEP_CONF[0]: 0x1D (0b0001 1101)
STEP_CONF[1]: 0x07 (0b0000 0111) (the step_cnt_en bit is set to 0)
The step counter register can be read out at Register (0x78-0x79) STEP_CNT. The step counter
can be reset by sending the command 0xB2 to the Register (0x7E) CMD.
2.11.38 Register (0x7E) CMD
Register (0x7E) CMD
ADDRESS 0x7E
RESET na
MODE R
DESCRIPTION Command register triggers operations like softreset, NVM programming, etc.
DEFINITION
Name
Register (0x7E) CMD
Bit
7
6
5
4
Read/Write
W
W
W
W
Reset Value 0
0
0
0
Content
cmd<7:4>
Bit
3
2
1
0
Read/Write
W
W
W
W
Reset Value 0
0
0
0
Content
cmd<3:0>
During the time a command is executed, it occupies the Register (0x7E) CMD. All new writes to
this register are dropped during this time with the exception of the softreset command. If a write
to the Register (0x7E) CMD is dropped, drop_cmd_err in Register (0x02) ERR_REG is set.
Table 29: Typical and max. execution times for which the CMD register is occupied


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