L3G4200DHTR STMicroelectronics, L3G4200DHTR Datasheet - Page 18

• Manufacturer Part Number: L3G4200DHTR
• Description: Gyroscopes Digital Gyro 96 FIFO 250 / 500 / 2000 DPS
• Manufacturer: STMicroelectronics

Specifications of L3G4200DHTR

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Main digital blocks
3.2.5
3.2.6
18/28
Stream-to-FIFO mode
In Stream-to-FIFO mode, data from yaw, pitch and roll measurements are stored in the
FIFO. A watermark interrupt can be enabled on pin DRDY/INT2, setting the I2_WTM bit in
CTRL_REG3, which is triggered when the FIFO is filled to the level specified in the WTM4:0
bits of FIFO_CTRL_REG. The FIFO continues filling until full (32 slots of 16-bit data for yaw,
pitch and roll). When full, the FIFO discards the older data as the data new arrives. Once a
trigger event occurs (related to INT1_CFG register events), the FIFO starts operating in
FIFO mode (see
Figure 11. Trigger stream mode
Retrieve data from FIFO
FIFO data is read through the OUT_X, OUT_Y and OUT_Z registers. When the FIFO is in
stream, trigger or FIFO mode, a read operation to the OUT_X, OUT_Y or OUT_Z registers
provides the data stored in the FIFO. Each time data is read from the FIFO, the oldest pitch,
roll and yaw data are placed in the OUT_X, OUT_Y and OUT_Z registers and both single
read and read_burst (X,Y & Z with auto-incremental address) operations can be used. In
read_burst mode, when data included in OUT_Z_H is read, the system again starts to read
information from addr OUT_X_L.
Figure
11).
Doc ID 17300 Rev 1
L3G4200DH