LSM9DS0 datasheet(27/74 Pages) STMICROELECTRONICS

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LSM9DS0

Functionality

4.3.5

Bypass-to-stream mode

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

event occurs (related to INT1_CFG_G (30h) events) the FIFO starts operating in Stream

mode. Refer to Figure 9 below.

Figure 9. Bypass-to-stream mode

4.3.6

Stream-to-FIFO mode

In Stream-to-FIFO mode, data from the yaw, pitch and roll measurement is stored in the

FIFO. A watermark interrupt can be enabled on pin DRDY_G by setting the I2_WTM bit in

CTRL_REG3_G (22h) to be raised when the FIFO is filled to the level specified in the

WTM4:0 bits of FIFO_CTRL_REG_G (2Eh). The FIFO continues filling until it is full (32 slots

of 16-bit data for yaw, pitch and roll). When full, the FIFO discards the older data as the new

data arrives. Once a trigger event occurs (related to INT1_CFG_G (30h) events), the FIFO

starts operating in FIFO mode. Refer to Figure 10.

Figure 10. Stream-to-FIFO mode

x31

y31

z31

xi,yi,zi

Empty

Bypass mode

Stream mode

Trigger event

x31

y31

z31

xi,yi,zi

x30

y30

z30

AM07235v1

x31

y31

z31

xi,yi,zi

Stream Mode

FIFO Mode

Trigger event

x31

y31

z31

xi,yi,zi

x30

y30

z30

AM07236v1

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