PixArt Imaging Inc.

PAC7311

VGA PC Camera Single-Chip

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PixArt Imaging Inc.

V1.5 Oct. 2005

2. Block Diagram

PAC7311 is a single-chip USB camera. It includes a VGA sensor based on PixArt VGA sensor with

enhanced image quality and sensitivity, a 48MHz PLL, internal regulators, JPEG 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 JPEG compressed image data is

transmitted by USB 1.1 isochronous pipe.