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The TW8809 is a low cost video format converter that can take either analog CVBS or 24-bit digital RGB format video and output these signals in ITU-R.656 format. The video sources can be scaled and deinterlaced, so that the ITU-R BT.656 output is already formatted to the desired resolution and in progressive format. In addition, the TW8809 has built-in OSD and image enhancement capabilities.

Key Features

• Analog Video Decoder
• NTSC (M, 4.43) and PAL (B, D, G, H, I, M, N, N combination), PAL (60), SECAM with automatic format detection
• Selectable differential or single-ended CVBS input
• Supports two differential or 4 single-ended CVBS inputs
• 10-bit ADC and analog clamping circuit
• Fully programmable static gain or automatic gain control for the Y or CVBS channel
• Programmable white peak control for the Y or CVBS channel
• High quality adaptive 2D comb filter for both NTSC and PAL inputs
• PAL delay line for color phase error correction
• Image enhancement with 2D dynamic peaking and CTI
• Digital subcarrier PLL for accurate color decoding
• Digital horizontal PLL and advanced synchronization processing for VCR playback and weak signal performance
• Programmable hue, brightness, saturation, contrast and sharpness Digital Input
• Supports YCbCr/RGB 24-bit input
• Supports both BT.656 and BT.601 video formats
• Supports input resolutions up to 720p Digital Output
• ITU-R BT.656 compatible YCbCr (4:2:2) output format
• Progressive ITU-R BT.656 output format for both interlaced and progressive inputs
• Output resolution up to SVGA (pseudo BT.656) On Screen Display
• 256 font RAM and 512 display RAM
• Four windows font OSD with bordering/shadowing
• 1/2/3/4 bits/pixel
• Supports variable width (12/16), height (2~32) Image Processing
• High quality scaler with both up/down and nonlinear scaling support
• Panorama/water-glass scaling
• Built-in 2D deinterlacing function
• Programmable hue, brightness, saturation, contrast and sharpness
• Programmable cropping of input video and graphics
• Independent RGB gain and offset controls
• Programmable 8-bit Gamma correction for each color
• Operates in frame sync mode
• Black/white stretch Clock Generation
• Spread spectrum clock
• Selectable modulation frequency and spread width Power Management
• Supports functional based independent power-down
• 1.8/3.3V operation Miscellaneous
• Short-to-battery detection test
• Short-to-ground detection test
• Supports 2-wire serial bus interface
• Single 27MHz crystal
• 56 lead QFN (with wettable flanks)
• TW8809AT-NA2-GR is AEC-Q100 qualified

Applications

• Rear seat entertainment
• Radio head unit