PAN101B Pixart, PAN101B Datasheet - Page 5

• Manufacturer Part Number: PAN101B
• Description: CMOS Optical Navigation Sensor
• Manufacturer: Pixart

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PAN101B
Usage
Usage
Usage
Notes
Field
Field
Field
0x02
0x03
0x04
Bit
Bit
Bit
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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.
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
Reserved
Reserved
DYOVF
DXOVF
Reserved
Reserved
RES
X movement is counts since last report. Absolute value is determined by resolution. Reading clears
the register. Report range –128~+127.
Y movement is counts since last report. Absolute value is determined by resolution. Reading clears
the register. Report range –128~+127.
Motion
X7
Y7
7
7
7
Reserved
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 for future
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
Reserved for future
Reserved for future
Resolution in counts per inch
0 = 800 (Default @ PAN101BXX-208)
1 = 400 (Default @ PAN101BXX-204)
X6
Y6
6
6
6
Reserved
X5
Y5
5
5
5
DYOVF
X4
Y4
Motion_Status
4
4
4
Delta_X
Delta_Y
DXOVF
X3
Y3
3
3
3
CMOS Optical Navigation Sensor
Reserved
X2
Y2
2
2
2
Reserved
X1
Y1
1
1
1
.
V1.4, FEB. 2003
RES
X0
Y0
0
0
0
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