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BMX160 Datasheet(HTML) 30 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) 30 Page - Bosch Sensortec GmbH

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BMX160
Data sheet
Page 30
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.
Skip frame (fh_parm= 0b000):
In case of a FIFO overflow, a skip frame is prepended to the FIFO content when the next
readout is performed. A skip frame indicates the number of skipped frames since the last
readout.
In the header byte of a skip frame, fh_mode equals 0b01 (since it is a control frame) and
the fh_param equals 0b000 (indicating skip frame). The data byte part of a skip frame
consists of one byte and contains the number of skipped frames. When more than 0xFF
frames have been skipped, 0xFF is returned.
Sensortime frame (fh_parm= 0b001):
If the sensortime frame functionality is activated (see description of Register (0x46-0x47)
FIFO_CONFIG) and the FIFO is overread, the last data frame is followed by a sensortime
frame. This frame contains the BMX160 timestamp content corresponding to the time at
which the last data frame was read.
In the header byte of a sensortime frame, fh_mode= 0b01 (since is a control frame) and
fh_param= 0b001 (indicating sensortime frame). The data byte part of a sensortime frame
consists of 3 bytes and contains the 24-bit sensortime. A sensortime frame does not
consume memory in the FIFO.
FIFO_input_config frame (fh_parm= 0b010):
Whenever the configuration of the FIFO input data sources changes, a FIFO input config
frame is inserted into the FIFO in front of the data to which the configuration change is
applied.
In the header byte of a FIFO_input_config frame, fh_mode= 0b01 (since it is a control
frame) and fh_param= 0b010 (indicating FIFO_input_config frame). The data byte part of
a FIFO_input_config frame consists of one byte and contains data corresponding to the
following table:
Bit
7
6
5
4
Content
reserved
mag_if_ch
mag_conf_ch
Bit
3
2
1
0
Read/Write
gyr_range_ch
gyr_conf_ch
acc_range_ch
acc_conf_ch
mag_if_ch:
A change in mag_rd_burst or mag_offset becomes active.
mag_conf_ch:
A change in Register MAG_CONF becomes active.
gyr_range_ch:
A change in Register (0x43) GYR_RANGE becomes active.
gyr_conf_ch:
A change in Register (0x42) GYR_CONF or gyr_fifo_filt_data or
gyr_fifo_downsampling in Register (0x45) FIFO_DOWNS becomes
active.
acc_range_ch:
A change in Register (0x41) ACC_RANGE becomes active.
acc_conf_ch:
A change in Register (0x40) ACC_CONF or acc_fifo_filt_data or
acc_fifo_downsampling in Register (0x45) FIFO_DOWNS becomes
active.


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