LSM6DSM datasheet(79/113 Pages) STMICROELECTRONICS

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LSM6DSM

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10.52

SENSORHUB12_REG (39h)

Twelfth byte associated to external sensors. The content of the register is consistent with

the SLAVEx_CONFIG number of read operation configurations (for external sensors from

x = 0 to x = 3).

10.53

FIFO_STATUS1 (3Ah)

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.

Table 139. FIFO_STATUS1 register

Table 140. FIFO_STATUS1 register description

10.54

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.

Table 141. FIFO_STATUS2 register

Table 142. FIFO_STATUS2 register description

Table 137. SENSORHUB12_REG register

SHub12_7 SHub12_6 SHub12_5 SHub12_4 SHub12_3 SHub12_2 SHub12_1 SHub12_0

Table 138. SENSORHUB12_REG register description

SHub12[7:0]

Twelfth byte associated to external sensors

DIFF_

FIFO_7

DIFF_

FIFO_6

DIFF_

FIFO_5

DIFF_

FIFO_4

DIFF_

FIFO_3

DIFF_

FIFO_2

DIFF_

FIFO_1

DIFF_

FIFO_0

DIFF_FIFO_[7:0]

Number of unread words (16-bit axes) stored in FIFO(1).

1. For a complete number of unread samples, consider DIFF_FIFO [10:8] in FIFO_STATUS2 (3Bh)

WaterM

OVER_RUN

FIFO_FULL_

SMART

FIFO_

EMPTY

DIFF_

FIFO_10

DIFF_

FIFO_9

DIFF_

FIFO_8

WaterM

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)

1. FIFO watermark level is set in FTH_[10:0] in FIFO_CTRL1 (06h) and FIFO_CTRL2 (07h)

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

FIFO empty bit. Default value: 0

(0: FIFO contains data; 1: FIFO is empty)

DIFF_FIFO_[10:8]

Number of unread words (16-bit axes) stored in FIFO(2).

2. For a complete number of unread samples, consider DIFF_FIFO [7:0] in FIFO_STATUS1 (3Ah)

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