22

MOTION

Address: 0x02

Access: R

Reset Value: 0x00

Bit

7

6

54

32

1

0

Field

MOT

FAULT LP_Valid Reserved

Reserved OP_Mode1 OP_Mode0 FRAME_Pix_First

Data Type: Bit field

USAGE:

MOTION register 0x02 allows the user to determine if motion has occurred since the last time it was read. If

the MOT bit is set, Delta_X_L, Delta_X_H, Delta_Y_L and Delta_Y_H registers should be read in sequence

to get the accumulated motion. (Note: Read register Delta_X_L before the subsequently read Delta_X_H,

Delta_Y_L and Delta_Y_H registers in order to freeze Delta_X_H, Delta_Y_L and Delta_Y_H register values).

Writing anything to MOTION register 0x02 clears the entire register, Delta_X_L, Delta_X_H, Delta_Y_L and

Delta_Y_H registers. The written data byte is not saved.

This register also indicates if a laser fault was detected

.

Field Name

Description

MOT

Motion since last report or Shutdown

0 = No motion

1 = Motion occurred, data ready for reading in Delta_X_L, Delta_X_H,

Delta_Y_L and Delta_Y_H registers

FAULT

Indicates that the XY_LASER is shorted to GND.

0 = no fault detected

1 = fault detected

LP_Valid

Laser power settings

0 = LASER_CTRL0 and LASER_CTRL1 registers and/or LP_CFG0 and LP_CFG1

registers do not have complementary values

1 = laser power is valid

OP_Mode[1:0]

Operating mode of the sensor

00 = Run mode

01 = Rest 1

10 = Rest 2

11 = Rest 3

FRAME_Pix_First

This bit is set to indicate first pixel in frame capture.

0 = Frame capture data not from pixel 0,0

1 = Frame capture data is from pixel 0,0

PixArt Imaging Inc.

Track-on-Glass Laser Sensor

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PixArt Imaging Inc.