TW2866 简介.pdf
TechwellTechwellSecurity Surveillance IC SolutionsSecurity Surveillance IC SolutionsTarget ApplicationsTarget Applications Video Server DVR PCI Card Embedded DVR4-Channel Video Decoder and Audio Codec plusVideo Encoder for Security ApplicationsTW2866The TW2866 is Techwells second-generation 4-in-1 video decoder and audio codec plus video encoder for security surveillanceapplications. The device includes four high quality NTSC/PAL/SECAM video decoders that convert analog composite videosignal to digital component YCbCr data. Each channel contains a 10-bit ADC and proprietary clamp/gain controller andutilizes 4H comb filter for separating luminance & chrominance to reduce cross noise artifacts. The TW2866 adopts imageenhancement techniques such as IF compensation filter, CTI and programmable peaking. In addition, TW2866 includes oneNTSC/PAL video encoder with two 10-bit DACs to support CVBS and YC output. The TW2866 also includes an audio codecwhich has five audio ADCs and one DAC. A built-in audio controller can generate digital outputs for recording/mixing andaccepts digital input for playback.雅仪科技【嵌入式智能互联设备】软硬件方案供应商。http:/ Surveillance IC SolutionsSecurity Surveillance IC Solutions4-Channel Video Decoder and Audio Codec plusVideo Encoder for Security ApplicationsTW2866Video DecoderVideo Decoder Accepts all NTSC(M/4.43) / PAL(B/D/G/H/I/K/L/M/N/60)/SECAM standards with auto detection Integrated four video analog anti-aliasing filters and 10-bit ADCs High performance adaptive 4H comb filters for all NTSC/PAL standards IF compensation filter for improvement of color demodulation Color Transient Improvement (CTI) and automatic white peak control Programmable hue, saturation, contrast, brightness and sharpness Proprietary fast video locking system for non-realtime application Supports the standard ITU-R BT.656 format or time multiplexed output with 54/108MHz. Provides simultaneous four channel Full D1 and CIF time-multiplexed outputs with 54MHz.Video EncoderVideo Encoder NTSC/PAL Video Encoder CVBS and S-video SupportAudio CodecAudio Codec Integrated five audio ADCs and one audio DAC Provides multi-channel audio mixed analog output Supports I2S/DSP Master/Slave interface for recordoutput and playback input. PCM 8/16 bit and u-Law/A-Law 8bit for audio wordlength Programmable audio sample rate that covers popularfrequencies of 8/16/32/44.1/48kHzTW2866 Block DiagramTW2866 Block DiagramOther FeaturesOther Features 2x/4x analog clock PLL for 108MHz clock output Supports a two-wire serial host interface 1.2V, 3.3V Supply Low power consumptionOrder InformationOrder Information Part Number: TW2866 Package: 128-pin LQFPAbout TechwellAbout TechwellTechwell is a fabless semiconductor company that designs, markets and sells mixed signal integrated circuits in the security surveillance,automotive infotainment, and consumer markets. Founded in 1997, we currently have over 165 employees and are headquartered in San Jose,California, with additional R&D and sales activities in South Korea, Japan, Taiwan and China.TechwellTechwellTECHWELL INC.TECHWELL INC.TEL 1-408-435-3888
