LSM303AH Datasheet, PDF(60/82 Page)

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LSM303AH Datasheet, PDF (60/82 Pages) –

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FTH

OVR

DIFF8

LSM303AH

Table 60. FIFO_SRC register description

FIFO threshold status.

(0: FIFO filling is lower than FTH level; 1: FIFO filling is equal to or higher than

threshold level)

FIFO overrun status. (0: FIFO is not completely filled; 1: FIFO is completely filled

and at least one sample has been overwritten)

Concatenated with FIFO_SAMPLES_A (30h) register, it represents the number of

unread samples stored in FIFO. (000000000 = FIFO empty; 100000000 = FIFO

full, 256 unread samples).

8.19

FIFO_SAMPLES_A (30h)

FIFO_SAMPLES control register (r)

DIFF7

DIFF6

Table 61. FIFO_SAMPLES_A register

DIFF5

DIFF4

DIFF3

DIFF2

DIFF1

DIFF0

DIFF [7:0]

Table 62. FIFO_SAMPLES_A register description

Concatenated with DIFF8 bit in FIFO_SRC_A (2Fh) register, it represents the

number of unread samples stored in FIFO. (000000000 = FIFO empty;

100000000 = FIFO full, 256 unread samples).

8.20

TAP_6D_THS_A (31h)

4D configuration enable and TAP threshold configuration (r/w)

4D_EN

6D_THS1

Table 63. TAP_6D_THS_A register

6D_THS0

TAP_

THS4

TAP_

THS3

TAP_

THS2

TAP_

THS1

TAP_

THS0

4D_EN

6D_THS [1:0]

TAP_THS [4:0]

Table 64. TAP_6D_THS_A register description

4D detection portrait/landscape position enable.

(0: no position detected; 1: portrait/landscape detection and face-up/face-down

position enabled).

Thresholds for 4D/6D function @ FS=2 g (refer to Table 65)

Threshold for TAP recognition @FS=2 g

6D_THS1

Table 65. 4D/6D threshold setting FS @ 2 g

6D_THS0

Threshold decoding (degrees)

6 (80 degrees)

11 (70 degrees)

16 (60 degrees)

21 (50 degrees)

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