PixArt Imaging Inc.
PAW3101DB
CMOS Optical Mouse Sensor
2. Block Diagram and Operation
POWER ON
RESET
AND POWER CONTROL
VOLTAGE REGULATOR
LED
LED
DRIVER
VDD
VSS
5V POWER
CMOS
IMAGE
SENSOR
SERIAL
INTERFACE
SCLK
SDIO
SERIAL
INTERFACE
DIGITAL
SIGNAL
PROCESSOR
VREF
VOLTAGE
REFERENCE
CONTROL REGISTER
OSCILLATOR
OSCIN
OSCOUT
RESONATOR
Figure 3. Block Diagram
The PAW3101DB is a CMOS-process optical mouse sensor with DSP integration chip that serves as a non-
mechanical motion estimation engine for implementing a computer mouse. It is based on new optical navigation
technology, which measures changes in position by optically acquiring sequential surface images (frames) and
mathematically determining the direction and magnitude of movement. The mouse sensor is in a 8-pin optical
package. The current X and Y information are available in registers accessed via a serial port. The word "mouse
sensor," instead of PAW3101DB, is used in the document.
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V3.1 May. 2008
PixArt Imaging Inc.
E-mail:
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PIXART [ PIXART IMAGING INC. ]
