Overview

The TW2834 has four high quality NTSC/PAL video decoders, dual color display controllers and dual video encoders. The TW2834 contains four built-in analog anti-aliasing filters, four 10-bit Analog-to-Digital converters, proprietary digital gain/clamp controller, high quality Y/C separator to reduce cross-noise and high performance dual scaler. Four built-in motion and blind detectors can increase the feature of a security system. The TW2834 has a flexible video display controller including basic QUAD and MUX functions. The TW2834 also has excellent graphic overlay function that displays character/bitmap for OSD, single box, 2D array box, and mouse pointer. The built-in channel ID CODEC allows auto decoding and displaying during playback and the additional scaler on the playback supports multi-cropping function of the same field or frame image. The TW2834 contains two video encoders with four 10-bit Digital-to-Analog converters for providing 2 composite or S-video outputs. The TW2834 also can be extended up to 8/16 channel video controller using chip-to-chip cascade connection.

TW2834 Functional Diagram
TW2834 Functional Diagram
  • Four Video Decoders
  • Four built-in analog anti-aliasing filters
  • Accepts all NTSC/PAL standard formats with auto detection
  • Integrated four anti-aliasing filters and 10-bit CMOS ADCs
  • High performance adaptive comb filters for all NTSC/PAL standards
  • IF compensation filter for improvement of color demodulation
  • PAL delay lines for correcting PAL phase errors
  • Programmable hue, saturation, contrast, brightness and sharpness
  • Dual high performance horizontal and vertical scaler for each channel Dual Video Encoders
  • 2 path digital outputs with ITU-R BT.656 standards
  • 2 path analog outputs with all analog NTSC/PAL standards
  • Supports CVBS or S-Video for each path
  • Programmable bandwidth for luminance and chrominance path Dual Video Controllers
  • Full Live/Strobe/Switch function
  • Various channel attribute control
  • Non-realtime application such as Pseudo 8 Channel or Dual page
  • Horizontal / Vertical Mirroring for each channel
  • Last image capture when video-loss detected
  • Auto sequence switch with 128 queues and/or manual switch by interrupt for Y Path
  • Channel skip in Auto sequence switch for Y Path when video-loss detected
  • Image enhancement for zoomed or still image in X Path
  • High performance 2X zoom to horizontal and vertical direction for X Path
  • Supports save and recall function for X Path
  • Extendable up to 8/16 channel video controller using cascade connection
  • Quad MUX switch with 32 queues and/or manual control by interrupt for Y Path

Applications

  • Security
  • Analog Quad\Mux Security System
  • 4/8/16 Ch Digital Video Recorder (DVR)
  • Car Rear Vision System

Documentation
Type Title Date
Product Advisory
PA21054 - Remove Package Bottom Mark on the selective Renesas LQFP, PQFP and TQFP products
PDF 259 KB
End Of Life Notice
PLC21035 - End of Life Notice
PDF 1.17 MB
Product Change Notice
PCN21002- Ink-to-Laser Mark Conversion of the listed Renesas Packaged
PDF 106 KB
Price Increase Notice
PIN19028 - Q3 Cy 19 Price Increase Notice
PDF 208 KB
Datasheet
TW2834 Datasheet
PDF 4.69 MB
5 items

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Product Options

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    Part Number
    TW2834-PA3-GE
    circleObsolete
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