TW8820

Request Full Datasheet

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

PARAMETRICS

Parameters
TW8820
Basic Information
Production Status
Mass Production
CVBS Input
Yes
S-Video Input
Yes
YPbPr Input
No
SCART Input
No
Analog RGB Input
No
Digital RGB/Y CbCr Input
No
Comb Filter
2D
Max Output Resolution
SVGA
Qualification Level
Automotive
De-Interlacer
No
Color Enhancement
Yes
PIP
No
OSD Type
Font
OSD Font ROM
N/A
OSD Font RAM
256
External OSD
No
OSD Colors
16 Colors / 16-bit Palette
TCON Output
Digital
Dual View Output
No
LVDS Input
No
LVDS Output
No
TTL Output
Yes
Memory Support
No
MCU
Integrated
CCFL/LED Controller
No
Touch-screen Controller
No
Temperature Range
-40 to +85

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