Design of VGA display technology based on ARM CPU S3C2440

This paper provides the resolution of large-screen image display based on high-performanced video D/A converter ADV7120 and embedded CPU S3C2440.While the LCD controler of S3C2440 generating the timing of VGA interface,the D/A video converter ADV7120 transforms digit color signal to anolog color signal to meet the VGA interface's requirement.The exact match of the TFT LCD timing and VGA display timing make it a practical way to drive the VGA interface by LCD controller inside S3C2440.The system meets the basic requrement of color displaying and can be used in the condition of larg-screened and pric-sensitive embedded applications.