TW8809

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Low Cost Video Format Converter

Product Status: Mass Production

OVERVIEW

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

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
TW8809
Basic Information
Production Status
Mass Production
CVBS Input
Yes
S-Video Input
Yes
YPbPr Input
No
SCART Input
No
Analog RGB Input
No
Comb Filter
2D
Max Output Resolution
SVGA
Qualification Level
Automotive
De-Interlacer
2D
PIP
No
OSD Type
Font
OSD Font RAM
256
External OSD
No
OSD Colors
16 Colors / 16-bit Pallette
TCON Output
No
Dual View Output
No
LVDS Input
No
LVDS Output
No
TTL Output
No
Memory Support
No
MCU
External
CCFL/LED Controller
No
Touch-screen Controller
No
Temperature Range
-40 to +105

Related Videos

3:42
The TW8844 is the industry's first full HD LCD video processor; it features fast boot reliability, frozen detection, and automatic contrast adjustment.
7:16
Learn how to assemble the hardware, change video source and demonstrate the MIPI loop back feature on the TW8844 evaluation boards.
1:22
This video talks about the TW88xx display processors, which enable boot up and display of video within 500 milliseconds.
3:42
The TW8844 is the industry's first full HD LCD video processor; it features fast boot reliability, frozen detection, and automatic contrast adjustment.
7:16
Learn how to assemble the hardware, change video source and demonstrate the MIPI loop back feature on the TW8844 evaluation boards.
1:22
This video talks about the TW88xx display processors, which enable boot up and display of video within 500 milliseconds.
3:42
The TW8844 is the industry's first full HD LCD video processor; it features fast boot reliability, frozen detection, and automatic contrast adjustment.
7:16
Learn how to assemble the hardware, change video source and demonstrate the MIPI loop back feature on the TW8844 evaluation boards.
1:22
This video talks about the TW88xx display processors, which enable boot up and display of video within 500 milliseconds.

Featured Design Resources


Key Differences in TW884x Family

Product Input Types ADC
Input
Freq.
(MHz)
Max
Output
Resolution
Panel
Output
SoC
Output
Pkg
Type
Technical
Highlights
CVBS Comb
Filter
S-Video Analog
RGB/YPbPr
Digital
RGB/YCbCr
LVDS
Open LDI
TW8844 Yes* 4H No No Yes
2x24-bit ports
Yes
2CH
27 1080p
1920x1080
TTL/TCON
2CH LVDS
MIPI-CSI2
v1.1
156 Ld LQFP 1080p panel support + MIPI-CSI2 output path, improved frozen detection
TW8845 Yes* 4H No No Yes
2x24-bit ports
Yes
2CH
27 1080p
1920x1080
TTL/TCON
2CH LVDS
Pseudo
BT.656
156 Ld LQFP 1080p panel support + BT656 output path, improved frozen detection
TW8836 Yes* 4H Yes Yes (1080p) Yes
24-bit
Yes
1CH
148 WXGA/720p
1366x768
TTL/TCON
1CH LVDS
Pseudo
BT.656
128 Ld LQFP 720p panel support with LVDS I/O

*Differential Supported