PAN101B Datasheet, PDF (11/24 Pages) Pixart Imaging Inc. – CMOS OPTICAL NAVIGATION SENSOR

PixArt Imaging Inc.
PAN101B
CMOS Optical Navigation Sensor
6. Quadrature Mode
The quadrature state of the PAN101B tells mouse controller which direction the mouse is moving in. The
output format is two channels quadrature (X and Y direction), which emulates encoder phototransistors.
The DSP generates the ∆x and ∆y relative displacement values that are converted into two channel
quadrature signals. PAN101B support 400cpi, 800cpi, two types of resolution. The following diagrams
show the timing for positive X motion, to the right or positive Y motion, up.
6.1 Quadrature Output Timing
XA/YA
X motion to the right
Y motion up
FOUR
XB/YB
83.3us
83.3us
83.3us
83.3us
XA/YA
THREE
XB/YB
83.3us
83.3us
166.7us
XA/YA
TWO
XB/YB
83.3us
250us
XA/YA
ONE
XB/YB
333.3us
333.3us @ 3000frames/second
Figure 9. Quadrature Output Timing
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
11
PixArt Imaging Inc.
E-mail: [e-mail]
V1.4, FEB. 2003