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om .c 4U et Inc. Techwell, he aS at TW9906 ­ Enhanced 3x10-bit Multi.D w w Standard Comb Filter Video Decoder w With YCbCr Input Support m o .c U t4 Techwell Confidential. Information may change e without notice. e h S ta a .D w w w TECHWELL, INC. 1 Disclaimer This document provides technical information for the user. Techwell, Inc. reserves the right to modify the information in this document as necessary. The customer should make sure that they have the most recent data sheet version. Techwell, Inc. holds no responsibility for any errors that may appear in this document. Customers should take appropriate action to ensure their use of the products does not infringe upon any patents. Techwell, Inc. respects valid patent rights of third parties and does not infringe upon or assist others to infringe upon such rights. REV.B 11/01/2005 om .c 4U et he aS at .D w w w TW9906 Introduction and Features ...5 Functional Description...6 Overview ...7 Analog Front-end ...7 Video Source Selection...7 Clamping and Automatic Gain Control ...8 Analog to Digital Converter ...8 Sync Processing ...8 Horizontal sync processing ...8 Vertical sync processing ...9 Color Decoding ...9 Y/C separation...9 Color demodulation ...9 Automatic Chroma Gain Control...10 Low Color Detection and Removal...10 Automatic standard detection ...10 Component Processing ...11 Luminance Processing...11 Sharpness...11 CTI ...11 The Hue and Saturation...11 Power Management ...11 Control Interface...11 Down-scaling and Cropping...12 TW9906 Down-Scaling ...12 TW9906 Cropping ...