DATA SHORT
TW8806
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RECOMMENDED REPLACEMENT PART
TW8835 (Not Pin Compatible)
FN7757
Rev.0.00
February 1, 2011
LCD Flat Panel TV / PC Monitor Controller with Built-in NTSC/PAL/SECAM
Decoder, Analog RGB, DAC and T-CON
Techwells TW8806 LCD display processor is a low cost high
quality TFT panel controller with an embedded
NTSC/PAL/SECAM TV decoder. This unique level of mixed
signal integration enables the panel to be used as a stand-
alone LCD display for in car entertainment, portable DVD and
portable LCD TV applications. An integrated triple analog-to-
digital converter supports YPbPr/RGB component input and
allows direct connection to DVD and Navigation sources. In
addition, flexible digital inputs supports 24bit Digital RGB and
8/16/24-bit YCbCr inputs.
The TW8806 contains all the logic required to convert
standard TV, DTV, and PC monitor signals to the digital control
and data signals required to drive various TFT panel types. It
supports TFT panel resolutions up to 1280 by 768 with 1-
pixel/clock formats.
The chip has nine analog inputs. This enables a number of
input combinations simultaneously. For example, the chip can
accept up 4 CVBS inputs simultaneously.The chip can also
accept one CVBS,one S-Video, one component and one analog
RGB simultaneously.
The integrated analog front-end contains three ADCs with
three clamping circuits and one Automatic Gain Control (AGC)
circuit to minimize external component count. It employs a 4H,
5-line adaptive comb filter and proprietary Y/C processing
technologies to produce exceptionally high quality pictures.
The chip's internal logic synchronizes the panel frame rate to
the incoming input frame rate. A high quality image-scaling
engine is used to convert the lower resolution formats or high
resolution DTV formats to the output panel resolution. An
internal de-interlacing engine also allows interlaced video to be
supported.
On Screen Display is supported through an on-chip OSD RAM
for maximum flexibility. A closed caption decoder is built in.
The TW8806 also accepts a 24 bit digital RGB input from
external PanelLinkTM receiver or ADCs for use as computer
monitor. In addition, it accepts 8/16/24 bits digital YCbCr
input for use with external ADCs for use as DTV monitor.
The TW8806 also supports TFT panel power sequencing,
DPMS (VESATM Display Power Management Signaling)
signaling and power management. The control interface is a 2-
wire serial bus interface. The TW8806 core operates at 1.8 V,
the IO at 3.3 V and packaged in a 128-pin PQFP package.
Features
• Integrated high performance NTSC/PAL/SECAM video
decoder
• Built in high quality De-interlacing engine
• Black / white / blue stretch for higher contrast
• Favorite color enhancement
• Integrated timing controller (T-CON) with digital and analog
panel support
• QVGA up toWXGA panel resolution support
• Low power consumption (600 mW)
• Small form factor 128-pin PQFP
24bit Digital RGB and 8/16/24-bit YCbCr
Inputs
• Supports connection to analog PC Graphics cards with the
addition of a 3 channel A/D converter for up toWXGA
resolution
• Supports YCbCr digital component input for DTV 480p,
720p, 1080i
TFT Panel Support
• Supports digital and analog LCD panels
• Supports a wide variety of active matrix TFT panels one pixel
per clock
Timing Controller (TCON)
• Support programmable interface signals for control
column(source) driver / row(gate) driver
• Support analog RGB output
• Programmable VCOM output
Analog RGB / YCbCr Inputs
• Has direct connection to analog RGB or YCbCr input up to
WVGA or 480p resolution
• Built-in PLL support for embedded or separated sync
FN7757 Rev.0.00
February 1, 2011
Page 1 of 2
TW8806
Features
(Continued)
Video Decoder and Processing
• Three 9-bit ADCs 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
• Software selectable analog inputs allows any of the following
combinations:
• Up to 4 composite video
• Up to 2 S-Video
• 1 YPbPr component
• 1 RGB
Applications
• Portable TV
• Rear Seat Car Display
• Portable DVD
• Navigation + DVD
• Door Phone
• DMB TV
• In Flight Display
YIN0
YIN1
MUX
YIN2
YIN3
YOUT
OSD
Chroma
Demodulation
Spread
Spectrum
PLL
Alpha Blending
TCON
TCON s ignals
3X Analog Front End
CIN0
MUX
YUV Processing
CIN1
CIN2
FPR[7:0]
FPG[7:0]
FPB[7:0]
FPVS
FPHS
FPDE
FPCLK
FPPWC
FPBIAS
Sync Processor
4H Adaptive
Comb Filter
Image Enhancement
Scaler /Deinterlacer
VIN0
VIN1
MUX
data
Panel Timing Generator
MUX
Gamma / Dither
Color Matrix
Line Buffers
MUX
ROUT
DAC
Sync
Processor
SOYIN
VSYNC
HSYNC
GOUT
BOUT
Input Format
Measurement
PLL
pixel clo ck
hsync
MC SDA
DTVCLK
DTVVS
DTVHS
Registers
DTV I/F
2 Wire
Serial Bus
MC SCL
MC SIA
DTVDE
DTVD[23:0]
FIGURE 1. TW8806 FLAT PANEL TV/MONITOR CONTROLLER FUNCTIONAL BLOCK DIAGRAM
© Copyright Intersil Americas LLC 2011. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
For additional products, see
www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at
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
www.intersil.com
FN7757 Rev.0.00
February 1, 2011
Page 2 of 2
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