LSM6DS3 Datasheet, PDF (46/100 Pages) STMicroelectronics – always-on 3D accelerometer and 3D gyroscope

Register description
9
Register description
LSM6DS3
The device contains a set of registers which are used to control its behavior and to retrieve
linear acceleration, angular rate and temperature data. The register addresses, made up of
7 bits, are used to identify them and to write the data through the serial interface.
9.1
9.2
FUNC_CFG_ACCESS (01h)
Enable embedded functions register (r/w).
Table 17. FUNC_CFG_ACCESS register
FUNC_CFG_EN 0⁽¹⁾
0⁽¹⁾
0⁽¹⁾
0⁽¹⁾
0⁽¹⁾
0⁽¹⁾
0⁽¹⁾
1. This bit must be set to ‘0’ for the correct operation of the device.
FUNC_CFG_EN
Table 18. FUNC_CFG_ACCESS register description
Enable access to the embedded functions configuration registers ⁽¹⁾ from address
02h to 32h. Default value: 0.
(0: disable access to embedded functions configuration registers;
1: enable access to embedded functions configuration registers)
1. The embedded functions configuration registers details are available in 10: Embedded functions register
mapping and 11: Embedded functions registers description.
SENSOR_SYNC_TIME_FRAME (04h)
Sensor synchronization time frame register (r/w).
TPH_7
Table 19. SENSOR_SYNC_TIME_FRAME register
TPH_6 TPH_5 TPH_4 TPH_3 TPH_2 TPH_1
TPH_0
TPH_ [7:0]
Table 20. SENSOR_SYNC_TIME_FRAME register description
Sensor synchronization time frame with the step of 500 ms and full range of 5 s.
Unsigned 8-bit.
Default value: 0000 0000
9.3
46/100
FIFO_CTRL1 (06h)
FIFO control register (r/w).
FTH_7
FTH_6
Table 21. FIFO_CTRL1 register
FTH_5 FTH_4 FTH_3 FTH_2
FTH_1
FTH_0
Table 22. FIFO_CTRL1 register description
FIFO threshold level setting⁽¹⁾. Default value: 0000 0000.
FTH_[7:0] ^{Watermark flag rises when the number of bytes written to FIFO after the next write is}
greater than or equal to the threshold level.
Minimum resolution for the FIFO is 1 LSB = 2 bytes (1 word) in FIFO
1. For a complete watermark threshold configuration, consider FTH_[11:8] in FIFO_CTRL2 (07h).
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