TW8826

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Ultra low cost, highly integrated LCD controller for analog panels

OVERVIEW

The TW8826 is a low cost highly integrated mutli-purpose LCD display solution with a high quality NTSC/PAL/SECAM 2D video decoder and a 2D De-interlacer/Scaler supporting analog panels. To reduce BOM cost, TW8826 integrates an 8-bit MCU and a CCFL controller. Through multiple input ports, TW8826 can directly display video and graphic content from a variety of devices including TV Tuners, DVD players, back-up cameras, DTV/DMB receivers and navigation/GPS receivers.

KEY FEATURES

  • Supports analog inputs including CVBS, S-Video, YPbPr & RGB signals and digital inputs including 24 bit RGB & 8/16/24 bit YCbCr. Interlaced and progressive ITU 656 inputs are supported
  • Supports analog panels up to WQVGA resolutions
  • Integrates cost saving features including a CCFL controller, charge pump booster, programmable panel offset control and on-chip 8 bit 8051 MCU with SPI interface
  • Built-in 8 colors Font OSD with 202 ROM and programmable 227 RAM fonts. Supports Multi-color fonts by combining 3 single color fonts
  • Embedded Image Enhancement
  • Programmable CTI, hue, brightness, saturation, contrast & sharpness control
  • Black/White Stretch
  • Programmable favorite color enhancement- up to three colors
  • Programmable Gamma Correction tables

  • 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
  • Advanced synchronization processing for VCR trick play signal
  • Three 10-bit ADCs and analog clamping circuit
  • Built-in analog anti-aliasing filter
  • Fully programmable static gain or automatic gain control for the Y or CVBS channel
  • Programmable white peak control for the Y or CVBS channel
  • Software selectable analog inputs allows any of the following
  • Up to 4 composite video
  • Up to 3 S-Video
  • Up to 2 analog YPbPr and RGB

  • Analog RGB / YPbPr input
  • Built-in sync processor for SOG support
  • Built-in Line-locked PLL
  • Built-in input measurement function
  • Support directly sampling up to SVGA

  • 8/16/24-bits Digital RGB/YCbCr Inputs
  • Allows connection to 8/16/24-bit RGB/YCbCr
  • Support both interlaced and progressive ITU 656

  • TFT Panel Support
  • Supports a variety of Analog active matrix TFT panels
  • Supports analog panel up to WQVGA (480 x 234), 20 MHz

  • Font OSD
  • Built-in Font OSD with 202 ROM and programmable 227 RAM fonts. Supports Multi-color fonts by combining 3 single color fonts
  • Multi-window (4) OSD support with color pallet

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
TW8826
Production Status
Mass Production
CVBS Input
Yes
S-Video Input
Yes
YPbPr Input
Yes
SCART Input
No
Analog RGB Input
Yes
Digital RGB/Y CbCr Input
24 bit
ADC Input Frequency (MHz)
27
Comb Filter
2D
Max Output Resolution
WQVGA
Qualification Level
Automotive
De-Interlacer
2D
Color Enhancement
Yes
PIP
No
OSD Type
Font
OSD Font ROM
202
OSD Font RAM
227
External OSD
No
OSD Colors
8x2 Color/8-Bit Palette
TCON Output
Analog
Dual View Output
No
LVDS Input
No
LVDS Output
No
TTL Output
Yes
Memory Support
No
MCU
Integrated
CCFL/LED Controller
CCFL & LED
Touch-screen Controller
No
Temperature Range
-40 to +85

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