PAN301A Datasheet, PDF (12/24 Pages) List of Unclassifed Manufacturers – CMOS HIGH PERFORMANCE OPTICAL MOUSE SENSOR

PixArt Imaging Inc.
PAN301A
CMOS Optical Mouse Sensor
5. Quadrature Mode
The quadrature state of the PAN301A 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. The following diagrams show the timing for positive X motion, to the right or positive
Y motion, up.
5.1 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 6. Quadrature output timing
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PixArt Imaging Inc.
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V1.3, MAY. 2004