PixArt Imaging Inc.
Track-on-Glass Laser Sensor
MOTION
Address: 0x02
Reset Value: 0x00
Access: R
Bit
Field
7
6
5
4
3
2
1
0
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
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PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
22
PIXART [ PIXART IMAGING INC. ]
