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Analog Devices Inc. ADV739x SD/HD视频编码器

Analog Devices ADV739x SD/HD视频编码器是单芯片、高速、数模 (DAC) 视频编码器。所有ADV739x视频编码器均支持嵌入式EAV/SAV时序码、外部视频同步信号以及I²C®与通信协议。三个2.7V/3.3V的10位视频DAC支持标清(SD)或高清(HD)视频格式的复合(CVBS)、S视频(Y-C)或分量(YPrPb/RGB)模拟输出。这些编码器针对低功耗操作进行了优化，尺寸极小，并且只需很少的外部元件，非常适合要求电视输出功能的便携式和功耗敏感型应用。有线电视信号检测和DAC自动关断特性可确保功耗保持最低。ADV7390/ADV7391配有8位视频输入端口。该8位视频输入端口通过SDR接口支持标清视频格式，通过DDR接口支持高清视频格式。ADV7392/ADV7393配有16位视频输入端口。设计人员可采用多种方式对该16位视频输入端口进行配置。ADV7392/ADV7393视频编码器支持SD RGB输入。

特性

  • Three high-quality, 10-bit video DACs
    • 16× (216MHz) DAC oversampling for SD
    • 8× (216MHz) DAC oversampling for ED
    • 4× (297MHz) DAC oversampling for HD
    • 37mA maximum DAC output current
  • Multi-format video input support
    • 4:2:2 YCrCb (SD, ED, and HD)
    • 4:4:4 RGB (SD)
  • Multi-format video output support
    • Composite (CVBS) and S-Video (Y-C)
    • Component YPrPb (SD, ED, and HD)
    • Component RGB (SD, ED, and HD)
  • Advanced power management
    • Patented content-dependent low power DAC operation
    • Automatic cable detection and DAC power-down
    • Individual DAC on/off control
    • Sleep mode with minimal power consumption
  • 74.25MHz 8-/10-/16-bit high definition input support
    • Compliant with SMPTE 274M (1080i), 296M (720p), and 240M (1035i)
  • Programmable features
    • Luma and chroma filter responses
    • Vertical blanking interval (VBI)
    • Subcarrier frequency (fSC) and phase
    • Luma delay
  • High-definition (HD) programmable features
    • (720p/1080i/1035i)
    • 4× oversampling (297MHz)
    • Internal test pattern generator
      • Color and black bar, hatch, flat field/frame
    • Fully programmable YCrCb to RGB matrix
    • Gamma correction
    • Programmable adaptive filter control
    • Programmable sharpness filter control
    • CGMS (720p/1080i) and CGMS Type B (720p/1080i)
    • Dual data rate (DDR) input support
  • Enhanced definition (ED) programmable features (525p/625p)
    • 8× oversampling (216MHz output)
    • Internal test pattern generator
      • Black bar, hatch, flat field/frame
    • Individual Y and PrPb output delay
    • Gamma correction
    • Programmable adaptive filter control
    • Fully programmable YCrCb to RGB matrix
    • Undershoot limiter
    • Macrovision Rev 1.2 (525p/625p) (ADV7390/ADV7392 only)
    • CGMS (525p/625p) and CGMS Type B (525p)
    • Dual data rate (DDR) input support

应用

  • Mobile handsets
  • Portable media and DVD players
  • Portable game consoles
  • Digital still cameras
  • Digital camcorders
  • Set-top boxes (STB)
  • Automotive infotainment (some versions)

Evaluation Tools

发布日期: 2016-12-09 | 更新日期: 2022-03-11