PixArt Imaging Inc.

PAC207BCA

Single-Chip CIF CMOS Image sensor with USB

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3

V1.3, June. 2004

3. BLOCK DIAGRAM

CIF

Sensor

Sensor

Controller

USB

Controller

5V->2.5V

5V->3.3V

PLL

Rate

Control

Register Bank

Image

compression

PAC207B is a single-chip USB camera. It includes a CIF sensor based on Pixart PAS106 with

enhanced image quality and sensitivity, a 48MHz PLL, internal regulators, proprietary image

compression, image processing schemed, control registers, on-chip SRAM for image data buffer and

USB controller. All register parameters are set by USB interface. And the compressed image data is

transmitted by USB 1.1 isochronous pipe.