DATA SHORT
To request the full datasheet, please visit www.intersil.com/products/TW8820
TW8820
FN8279
Rev. 1.00
April 24, 2014
LCD Controller
Description
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.
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
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
Fully programmable static gain or automatic gain
control for the Y or CVBS channel
Programmable cropping of input video and graphics
Programmable white peak control for the Y or CVBS
channel
Programmable 8-bit Gamma correction for each color
High quality adaptive 2D comb filter for both NTSC and
PAL inputs
Black/White Stretch
Independent RGB gain and offset controls
Operates in Frame Sync mode
PAL delay line for color phase error correction
CLOCK GENERATION
Image enhancement with 2D dynamic peaking and CTI
Spread spectrum clock
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
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
1.8/3.3V operation
Supports Serial (8-bit) RGB panels
FN8279 Rev. 1.00
April 24, 2014
Page 1 of 2
TW8820
MISCELLANEOUS
Applications
Supports 2-wire serial bus interface
Video door phone intercom display controller
Built-in Auxiliary ADC input
Portable DVD players, media players, and DVRs
Single 27MHz crystal
Rear Camera Displays
64 pin LQFP package
SPI
Flat Panel Out
SPI
YIN1~2
MCU
TCON
2D-Comb
Video
Decoder
Triple
Triple
Triple
ADCs
ADCs
ADCs
Serial Data
Font
OSD
Input
Controller
TCON signals
GPIO
Scaler
Image
Enhance
Output
Formatter
2-Wire
Serial
Bus
I2C_SDAT
I2C_SCLK
TW8820 FUNCTIONAL BLOCK DIAGRAM
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in the quality certifications found at http://www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that
such modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that
datasheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by
Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see http://www.intersil.com
FN8279 Rev. 1.00
April 24, 2014
Page 2 of 2
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