PixArt Imaging Inc.
PAW3102DB
CMOS Optical Mouse Sensor
0x1B
Configuration
Bit
7
6
5
4
3
2
1
0
Field
Usage
XY_exch
Y_inv
X_inv
Reserved[4:0]
Register 0x1B allows the user to change the XY direction of the mouse sensor. Shown below are the
bits, their default values, and optional values.
Configuration[7:5]
“011” = Typical direction 0°
“110” = The mouse sensor turn -90°
“101” = The mouse sensor turn +90°
Notes:
When write Configuration[7:5], users have to keep Configuration[4:0] values. So the only way to
do this is read Configuration[7:0] first, set/clear the desired bits of Configuration[7:5] and keep the
same value of Configuration[4:0] , then write Configuration[7:0].
Notes
Field Name
Description
X and Y direction exchange function
0 = Disable (Default)
XY_exch
1 = Enable (X and Y direction exchange)
Y direction inverse function
0 = Enable(Y direction inverse)
1 = Disable (Default)
Y_inv
X direction inverse function
0 = Enable (X direction inverse)
1 = Disable (Default)
X_inv
Reserved for future use. Don’t change the reserved bits during register writes. The
user can change other bits, but the reserved bits must be kept during register writes.
Reserved[4:0]
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PixArt Imaging Inc.
9
E-mail: fae_service@pixart.com.tw
V1.2, April. 2008
PIXART [ PIXART IMAGING INC. ]
