PAN301BSI-208 Datasheet, PDF (5/27 Pages) Pixart Imaging Inc. – CMOS HIGH PERFORMANCE OPTICAL MOUSE SENSOR

PixArt Imaging Inc.
PAN301BSI-208
CMOS Optical Mouse Sensor
0x02
Bit
Field
Usage
Motion_Status
7
6
5
4
3
2
1
0
Motion
Reserved[6:5]
DYOVF DXOVF
RES[2:1]
Reserved
Register 0x02 allows the user to determine if motion has occurred since the last time it was read. If
so, then the user should read registers 0x03 and 0x04 to get the accumulated motion. It also tells if
the motion buffers have overflowed since the last reading. The current resolution is also shown.
Notes
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.
Field Name
Motion
Description
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[6:5]
DYOVF
DXOVF
RES[2:1]
Reserved for future
Motion Delta Y overflow, ∆Y buffer has overflowed since last report
0 = No overflow (Default)
1 = Overflow has occurred
Motion Delta X overflow, ∆X buffer has overflowed since last report
0 = No overflow (Default)
1 = Overflow has occurred
Resolution in counts per inch
0 = 800 (Default)
1 = 400
2 = 600
Reserved
Reserved for future
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PixArt Imaging Inc.
E-mail: [e-mail]
V1.1, MAY. 2004