PAW3603DH-NF Datasheet, PDF (14/32 Pages) Pixart Imaging Inc. – LOW POWER WIRELESS LASER MOUSE SENSOR

PixArt Imaging Inc.
PAW3603DH-NF
CMOS Laser Mouse Sensor
6. Quadrature Mode
The quadrature state of the mouse sensor tells the 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.
6.1 Quadrature Output Timing
XA/YA
X motion to the right
Y motion up
FOUR
XB/YB
38us
38us
38us
38us
XA/YA
THREE
XB/YB
38us
38us
76us
XA/YA
TWO
XB/YB
38us
114us
XA/YA
ONE
XB/YB
152us
152us @
6600frames/second
Figure 6. Quadrature Output Timing
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PixArt Imaging Inc.
E-mail: [e-mail]
V1.0, Aug. 2007