TW6869

8-in-1 Video Decoders with PCI Express Media Bridge

OVERVIEW

The TW6869 is a highly integrated solution that supports multi-channel video and audio capture via PCIe x1 interface for PC DVR system and video analytic application. It contains high quality eight-channel NTSC/PAL/SECAM video decoders that convert analog composite video signal to digital component YCbCr data, and utilize adaptive 4H comb filter for separating luminance and chrominance to reduce cross noise artifacts.

TW6869 contains a high performance proprietary DMA controller that fully optimizes the utilization of PCIe x1 bandwidth and enables it to transfer video and audio data at a high throughput rate that closely approaches the theoretical limit of PCIex1 interface. TW6869 is able to simultaneously decode and transfer 8 real time D1 video, or up to 32 channel non-real time D1, plus 8 channel audio.

TW6869 decreases the complexity and workload of client-side software development, and significantly reduces the strains on PC hardware and resources. TW6869 also includes a software development kit (SDK) with Windows and Linux compliant drivers and reference application software.

KEY FEATURES


    Video Decoders
  • Accepts all NTSC(M/N/4.43) / PAL(B/D/G/H/I/K/L/M/N/60) standards with auto detection
  • Integrated eight video analog anti-alias filters and 10-bit CMOS ADCs
  • IF compensation filter for improvement of color demodulation
  • Color Transient Improvement (CTI)
  • White peak AGC control
  • Programmable hue, saturation, contrast, brightness and sharpness
  • High quality proprietary fast video locking system for non-real-time application
  • High performance adaptive 4H comb filters for all NTSC and PAL standards

    Audio Codecs
  • Integrated eight audio ADCs
  • 8/16 bit audio word length
  • Sample audio with 8/16/32/44.1/48kHz

    DMA Controller
  • Highly-efficient DMA design can support up to 8 real time D1 video and 8 real time audio channels, or up to 32 non-real- time video with optimization of full PCIex1 bandwidth
  • Multiple video format output support: UYVY/Y422, YUYV/YUY2, IYU1/Y411, Y41P, YUV420, RGB555 and RGB565
  • Integrated internal video and audio generator simplifies system test and development
  • Built-in motion detection engine for each video channel
  • Hardware-friendly design enables smooth data transfer and virtually eliminates unwanted big-block data jamming among PC devices, resulting in optimized PC internal bandwidth consumption

    PCIe Configurations
  • PCI Express Base Specification 1.1 Compliant
  • Flexible PCIe packet size configuration: 128 byte, 256 byte and 512 byte options

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
TW6869
Production Status
Mass Production
# of Inputs
32
# of Channels/Device
8
Resolution (Bits)
D1
Video DAC
No
Comb Filter
2D
Bus/Output Interface
PCIe2.0 - BT.656
Qualification Level
Standard
Function
Video Decoder
Temperature Range
-40 to +85

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