PAN301BSI-208 Datasheet, PDF (3/27 Pages) Pixart Imaging Inc. – CMOS HIGH PERFORMANCE OPTICAL MOUSE SENSOR

PixArt Imaging Inc.
PAN301BSI-208
2. Block Diagram and Operation
LED
VSS_LED
LED
DRIVE
XA
QUADRATURE
XB
OUTPUTS
YA
YB
POWER ON
RESET
CMOS
IMAGE
SENSOR
DIGITAL
SIGNAL
PROCESSOR
CMOS Optical Mouse Sensor
VDD
VDDD
VDDA
VSSD
VSSA
3.3V
POWER
PD
VRT
SERIAL
INTERFACE
SCLK
SDIO
SERIAL
INTERFACE ^{CONTROL REGISTER OSCILLATOR}
OSCIN
OSCOUT ^RESONATOR
Figure 3. Block diagram
The PAN301BSI-208 is a high performance 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 sensor is in a 20pin optical package. The output format is two-channel quadrature (X and
Y direction), which emulates encoder phototransistors. The current X and Y information are also
available in registers accessed via a serial port.
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PixArt Imaging Inc.
E-mail: [e-mail]
V1.1, MAY. 2004