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TW9912
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TW9912

  • 所属类别:监控电路Monitoring circuit
  • 产品名称:分量输入和逐行输出支持视频解码器
  • 厂商:intersil
  • 生产批号:12+
  • 封装:sop
  • 库存状态:有库存
  • 库存量:5000
  • 最低订购量:1
  • 详细资料:点击查找TW9912的pdf资料
  • 点击询价
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  • Product Introduction

Key features:

decoder description

TW9912 is a low-power NTSC/PAL/SECAM video decoder chip that also supports analog component video input. The video decoder decodes baseband analog CVBS or S-video signals to digital 8-bit 4:2:2 YCbCr format. Analog component video digitization to 8-bit YCbCr format. The digital output supports the standard BT.656 format for interlaced video. It can also output progressive BT.656 format when receiving a progressive component input or converting interlaced video to progressive format via the internal deinterlacing engine. The TW9912 adopts analog and digital I/O power supplies, 3.3V supply voltage and 1.8V. A single 27MHz crystal is required to decode all analog video standards. The chip includes an analog front-end input source selection, variable gain amplifier, analog-to-digital converter, a Y/C split circuit, multi-standard color decoders (BGHI PAL, PAL M, PAL printing, print combination PAL, NTSC M, NTSC 4.43 and SECAM), and synchronous circuitry. Complete high-quality adaptive 4H comb filter Y/C separation to reduce cross-color and cross-brightness. Advanced synchronous processing circuitry can produce stable pictures, non-standard and weak signals. The decoder's output wire locks its input. The TW9912 also includes circuitry to detect and process signals at vertical blanking intervals (VBI), including closed headers and WSS. This and process VBI data output is read out via the host interface registers. It also detects AGC pulses and colorstripe pulse signals contained in analog copy protection. A 2-wire serial host interface is used to simplify system integration. Through this interface, all functions can be controlled. ISL97686

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