EVAL-ADXL346Z Analog Devices Inc, EVAL-ADXL346Z Datasheet - Page 28

• Manufacturer Part Number: EVAL-ADXL346Z
• Description: Inertial Sensor Evaluation System
• Manufacturer: Analog Devices Inc

Specifications of EVAL-ADXL346Z

• Silicon Manufacturer: Analog Devices
• Silicon Core Number: ADXL346
• Kit Application Type: Sensing - Motion / Vibration / Shock
• Application Sub Type: Accelerometer
• Silicon Family Name: IMEMS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADXL346
Register 0x3C—Orient (Read Only)
D7
0
Vx Bits
These bits show the validity of the 2D (V2) and 3D (V3) orienta-
tions. A value of 1 corresponds to the orientation being valid. A
value of 0 means that the orientation is invalid because the current
orientation is in the dead zone.
xD_ORIENT Bits
These bits represent the current 2D (2D_ORIENT) and 3D
(3D_ORIENT) orientations of the accelerometer. If the orien-
tation interrupt is enabled, this register is read to determine the
orientation of the device when the interrupt occurs. Because this
register updates with each new sample of acceleration data, it
should be read at the time of the orientation interrupt to ensure
that the orientation change that caused the interrupt has been
identified. Orientation values are shown in Table 25 and Table 26.
See the Orientation Sensing section for more details.
D6
V2
D5
2D_ORIENT
D4
D3
V3
D2
3D_ORIENT
D1
D0
Rev. A | Page 28 of 40
Writing to the BW_RATE register (Address 0x2C) or placing
the part into standby mode resets the orientation feature, clearing
the orientation filter and the orientation status. An orientation
interrupt (if enabled) results from these actions if the orientation
during the next output sample is different from the default
value (+X for 2D orientation detection and undefined for 3D
orientation).
Table 25. 2D Orientation Codes
Decimal
0
1
2
3
Table 26. 3D Orientation Codes
Decimal
3
4
2
5
1
6
Binary
00
01
10
11
Binary
011
100
010
101
001
110
Orientation
Portrait positive
Portrait negative
Landscape positive
Landscape negative
Orientation
Front
Back
Left
Right
Top
Bottom
Dominant Axis
+X
−X
+Y
−Y
Dominant Axis
+X
−X
+Y
−Y
+Z
−Z