PixArt Imaging Inc.

PAN3204DB

Wireless Optical Mouse Sensor

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PixArt Imaging Inc.

E-mail: fae_service@pixart.com.tw

V3.0, Apr. 2008

2. Block Diagram and Operation

CMOS IMAGE

SENSOR

DIGITAL

SIGNAL

PROCESSOR

POWER ON

RESET

LED

DRIVE

CONTROL

REGISTER

SCLK

SDIO

OSCILLATOR

LED

VSS

SERIAL

INTERFACE

OSC_RES

2.5V ~ 2.9 V

POWER

VDDA

VDD

MOTION/

WAKE UP

MOTSWK

SERIAL

INTERFACE

1.73V ~ 1.87V

POWER

Figure 3. Block Diagram

The PAN3204DB is a high performance, low power and low cost CMOS-process optical mouse sensor with

DSP integration chip that serves as a non-mechanical motion estimation engine for implementing a wireless

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 an 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 PAN3204DB, is used in the

document.