LPS22CH datasheet(44/55 Pages) STMICROELECTRONICS

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LPS22CH

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9.9

FIFO_CTRL (13h)

FIFO control register (R/W)

The STOP_ON_WTM bit enables the use of the FIFO watermark level: when the number of

samples in FIFO is equal to the watermark level (set using the WTM[4:0] bits in FIFO_WTM

(14h)) then FIFO is full.

The TRIG_MODES bit enables the triggered FIFO modes.

The F_MODE[1:0] bits select one of the FIFO modes, as described in Table 21.

Output data (pressure and temperature) are read through FIFO_DATA_OUT_PRESS_XL

(78h), FIFO_DATA_OUT_PRESS_L (79h), FIFO_DATA_OUT_PRESS_H (7Ah),

FIFO_DATA_OUT_TEMP_L (7Bh) and FIFO_DATA_OUT_TEMP_H (7Ch); both single

read and multiple read operations can be used.

7654

STOP_ON_WTM TRIG_MODES

F_MODE1

F_MODE0

STOP_ON_WTM Stop-on-FIFO watermark. Enables FIFO watermark level use. Default value: 0

(0: disable; 1: enable)

TRIG_MODES

Enables triggered FIFO modes. Default value: 0

F_MODE[1:0]

Selects triggered FIFO modes. Default value: 00

Refer to Table 21.

Table 21. FIFO mode selection

TRIG_MODES

F_MODE[1:]

Mode

x00

Bypass

001

FIFO mode

01x

Continuous (Dynamic-Stream)

101

Bypass-to-FIFO

110

Bypass-to-Continuous (Dynamic-Stream)

111

Continuous (Dynamic-Stream)-to-FIFO

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