LSM330 datasheet(23/75 Pages) STMICROELECTRONICS

23 / 75 page

DocID023426 Rev 3

23/75

LSM330

Functionality

4.2.6

Stream-to-FIFO mode

In Stream-to-FIFO mode FIFO behavior changes according to an interrupt generated by the

configuration of the two state machines using the INT_SM1 and INT_SM2 bits in the STAT

(18h) register.

When the INT_SM1, INT_SM2 bits in the STAT (18h) register are equal to '1', FIFO operates

in FIFO mode. When the INT_SM1, INT_SM2 bits in the STAT (18h) register are equal to '0',

FIFO operates in Stream mode.

4.2.7

Bypass-to-Stream mode

In Bypass-to-Stream mode, the FIFO starts operating in Bypass mode and once a trigger

event occurs (STAT (18h), the FIFO starts operating in Stream mode.

4.2.8

Retrieving data from FIFO

FIFO data is read from OUT_X_L_A (28h) and OUT_X_H_A (29h), OUT_Y_L_A (2Ah) and

OUT_Y_H_A (2Bh) and OUT_Z_L_A (2Ch) and OUT_Z_H_A (2Dh). When the FIFO is in

Stream, Stream-to-FIFO mode or FIFO mode, a read operation from the OUT_X_L_A (28h)

and OUT_X_H_A (29h), OUT_Y_L_A (2Ah) and OUT_Y_H_A (2Bh) or OUT_Z_L_A (2Ch)

and OUT_Z_H_A (2Dh) registers provides the data stored in the FIFO. Each time data is

read from the FIFO, the oldest X, Y and Z data are placed in the OUT_X_L_A (28h) and

OUT_X_H_A (29h), OUT_Y_L_A (2Ah) and OUT_Y_H_A (2Bh) and OUT_Z_L_A (2Ch)

and OUT_Z_H_A (2Dh) registers and both single read and read_burst operations can be

used.

LSM330 датащи(PDF) 23 Page - STMicroelectronics