LSM6DSL Datasheet, PDF (78/113 Pages) STMicroelectronics – iNEMO inertial module: always-on 3D accelerometer and 3D gyroscope

Register description
LSM6DSL
9.54
FIFO_STATUS2 (3Bh)
FIFO status control register (r). For a proper reading of the register, it is recommended to set
the BDU bit in CTRL3_C (12h) to 1.
WaterM OVER_RUN
Table 140. FIFO_STATUS2 register
FIFO_
FULL_
SMART
FIFO_
EMPTY
0
DIFF_
FIFO_10
DIFF_
FIFO_9
DIFF_
FIFO_8
WaterM
Table 141. FIFO_STATUS2 register description
FIFO watermark status. The watermark is set through bits FTH_[7:0] in
FIFO_CTRL1 (06h). Default value: 0
(0: FIFO filling is lower than watermark level⁽¹⁾;
1: FIFO filling is equal to or higher than the watermark level)
OVER_RUN
FIFO overrun status. Default value: 0
(0: FIFO is not completely filled; 1: FIFO is completely filled)
FIFO_FULL_
SMART
Smart FIFO full status. Default value: 0
(0: FIFO is not full; 1: FIFO will be full at the next ODR)
FIFO_EMPTY
DIFF_FIFO_[10:8]
FIFO empty bit. Default value: 0
(0: FIFO contains data; 1: FIFO is empty)
Number of unread words (16-bit axes) stored in FIFO⁽²⁾.
1. FIFO watermark level is set in FTH_[11:0] in FIFO_CTRL1 (06h) and FIFO_CTRL2 (07h).
2. For a complete number of unread samples, consider DIFF_FIFO [7:0] in FIFO_STATUS1 (3Ah).
9.55
FIFO_STATUS3 (3Ch)
FIFO status control register (r). For a proper reading of the register, it is recommended to set
the BDU bit in CTRL3_C (12h) to 1.
FIFO_
PATTERN
_7
FIFO_
PATTERN
_6
Table 142. FIFO_STATUS3 register
FIFO_
FIFO_
FIFO_
FIFO_
PATTERN PATTERN PATTERN PATTERN
_5
_4
_3
_2
FIFO_
PATTERN
_1
FIFO_
PATTERN
_0
FIFO_
PATTERN_[7:0]
Table 143. FIFO_STATUS3 register description
Word of recursive pattern read at the next reading.
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