PAW3102DB Datasheet, PDF (7/22 Pages) Pixart Imaging Inc. – HIGH RESOLUTION CMOS OPTICAL MOUSE SENSOR

PixArt Imaging Inc.
PAW3102DB
CMOS Optical Mouse Sensor
0x16
Bit
Field
Usage
Motion_Status
7
6
5
4
3
2
1
0
Motion
Reserved[2:1]
DYOVF DXOVF Reserved[0]
RES[1:0]
Register 0x16 allows the user to determine if motion has occurred since the last time it was read. If
so, then the user should read registers 0x17 and 0x18 to get the accumulated motion. It also tells if the
motion buffers have overflowed since the last reading. The current resolution is also shown.
Reading this register freezes the Delta_X and Delta_Y register values. Read this register before
reading the Delta_X and Delta_Y registers. If Delta_X and Delta_Y are not read before the motion
register is read a second time, the data in Delta_X and Delta_Y will be lost.
Notes Field Name Description
Motion
Motion since last report or PD
0 = No motion (Default)
1 = Motion occurred, data ready for reading in Delta_X and Delta_Y registers
Reserved[2:1] Reserved for future use
0x17
Bit
Field
Usage
DYOVF
Motion Delta Y overflow, ΔY buffer has overflowed since last report
0 = No overflow (Default)
1 = Overflow has occurred
DXOVF
Motion Delta X overflow, ΔX buffer has overflowed since last report
0 = No overflow (Default)
1 = Overflow has occurred
Reserved[0] Reserved for future use
RES[1:0]
Resolution in counts per inch
0 = 1000 (Default)
1 = 1200
2 = 1600
3 = 800
Delta_X
7
6
5
4
3
2
1
0
X7
X6
X5
X4
X3
X2
X1
X0
X movement is counts since last report. Absolute value is determined by resolution. Reading clears
the register. Report range –128 ~ +127.
0x18
Bit
Field
Usage
Delta_Y
7
6
5
4
3
2
1
0
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Y movement is counts since last report. Absolute value is determined by resolution. Reading clears
the register. Report range –128 ~ +127.
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PixArt Imaging Inc.
E-mail: [e-mail]
V1.2, April. 2008