TW8820

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LCD Controller

Product Status: Mass Production

OVERVIEW

The TW8820 incorporates many of the features required to create a multi-purpose Video Door phone intercom LCD display system in a single package. It integrates a high quality 2D comb NTSC/PAL/SECAM video decoder, high quality scaler, and image enhancement functions which include Black and White Stretch and Gamma Correction. It also supports panoramic scaling for conversion to wide screen display. TW8820 supports analog composite video input and the output supports a wide variety of digital LCD panel types with its built-in timing controller.

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
  • 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 sub-carrier 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

    TFT PANEL SUPPORT
  • Built-in programmable timing controller
  • Supports 3, 4, 6 or 8 bits per pixel up to 16.8 million colors with built-in dithering engine
  • Supports digital panels up to WVGA/SVGA resolution
  • Supports Serial (8-bit) RGB panels

    TIMING CONTROLLER (TCON)
  • Supports programmable timing interface signals for control
  • Column (source) driver / row (gate) driver

    ON SCREEN DISPLAY
  • 6912 byte programmable font RAM and 256 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 de-interlacing 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

    MCU
  • Industry standard 8052 based
  • Code fetch from external SPI flash memory
  • 512 byte XDATA memory
  • POWER MANAGEMENT
  • Supports functional based independent power down
  • 1.8 / 3.3 V operation

    MISCELLANEOUS
  • Supports 2-wire serial bus interface
  • Built-in Auxiliary ADC input
  • Single 27MHz crystal
  • 64 pin LQFP package

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
TW8820
Basic Information
生产状态
Mass Production
CVBS输入
Yes
S-视频输入
Yes
YPbPr输入
No
SCART输入
No
模拟RGB输入
No
数字RGB/Y CbCr输入
No
梳状滤波器
2D
最大输出分辨率
SVGA
资质级别
Automotive
去隔行
No
颜色增强
Yes
PIP
No
OSD类型
Font
OSD字体ROM
N/A
OSD字体RAM
256
外部OSD
No
OSD颜色
16 Colors / 16-bit Palette
TCON输出
Digital
双视图输出
No
LVDS输入
No
LVDS输出
No
TTL输出
Yes
内存支持
No
MCU
Integrated
CCFL/LED 控制器
No
触摸屏控制器
No
温度范围
-40 to +85

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