LSM330 datasheet(26/75 Pages) STMICROELECTRONICS

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Functionality

LSM330

26/75

DocID023426 Rev 3

4.3.4

Stream mode

In Stream mode, data from yaw, pitch and roll measurements are stored in the FIFO. A

watermark interrupt can be enabled and set as in the FIFO mode. 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 arrive. Programmable watermark level events can be enabled to generate

dedicated interrupts on the DRDY_G/INT2_G pin (configuration through CTRL_REG3_G

(22h)). Stream mode is represented in the following figure.

Figure 9. Stream mode

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 the INT1_CFG_G (30h) register events) the FIFO starts operating in

Stream mode. Refer to the following figure.

Figure 10. Bypass-to-stream mode

x 0

y 0

x 1

y 1

x 2

y 2

x 31

y 31

z31

xi,y i,z i

x 30

y 30

z30

AM07234v1

x31

y31

z31

xi,yi,z i

Empty

Bypass mode

Stream mode

Trigger event

x 0

x 2

x 31

y31

z31

xi,yi,z i

x 30

y30

z30

AM07235v1

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