FXOS8700CQ datasheet(43/86 Pages) FREESCALE

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Sensors

Freescale Semiconductor, Inc.

Figure 38. Illustration of portrait to landscape transition

9.8.1

PL_STATUS (0x10) register

This status register can be read to get updated information on any change in orientation by reading bit 7, or the specifics of the

orientation by reading the other bits. For further understanding of Portrait Up, Portrait Down, Landscape Left, Landscape Right,

Back and Front orientations please refer to Figure 38. The interrupt is cleared when reading the PL_STATUS register.

The newlp bit is set to 1 after the first orientation detection after a Standby to Active transition, and whenever a change in lo, bafro,

or lapo occurs. The newlp bit is cleared anytime the PL_STATUS register is read. lapo, bafro and lo continue to change when

newlp is set. The current orientation is locked if the absolute value of the acceleration experienced on any of the three axes is

greater than 1.25g.

newlp

—

lapo[1:0]

bafro

00000

Figure 39. PL_STATUS register

Table 39. PL_STATUS bit descriptions

Field

Description

newlp

Landscape/Portrait status change flag.

0: No change

1: BAFRO and/or LAPO and/or Z-tilt lockout value has changed

Z-tilt angle lockout.

0: Lockout condition has not been detected.

1: Z-tilt lockout trip angle has been exceeded. Lockout condition has been detected.

bafro

Back or front orientation.

0: Front: equipment is in the front facing orientation.

1: Back: equipment is in the back facing orientation.

lapo[1:0](1)

1. The default power up state is bafro(Undefined), lapo(Undefined), and no lockout for orientation function.

Landscape/Portrait orientation.

00: Portrait up: equipment standing vertically in the normal orientation

01: Portrait down: equipment standing vertically in the inverted orientation

10: Landscape right: equipment is in landscape mode to the right

11: Landscape left: equipment is in landscape mode to the left.

Portrait

Portrait to Landscape

Trip Angle = 30

0° Landscape

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