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TW8806 Schematic ( PDF Datasheet ) - Techwell

Teilenummer TW8806
Beschreibung (TW8806 / TW8807) LCD Display Processor
Hersteller Techwell
Logo Techwell Logo 




Gesamt 2 Seiten
TW8806 Datasheet, Funktion
Techwell
Mixed Signal Semiconductor Solutions
LCD DIsplay Processors
TECHWELL
DISPLAY
www.DataSheet4U.com
Target Applications
Rear seat car entertainment displays
Portable DVD players
Portable LCD TVs
LCD monitors with TV
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 to WXGA panel resolution support
Low power consumption (600 mW)
Small form factor 128-pin PQFP
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
4-H adaptive comb filter Y/C separation
Image enhancement with 2D dynamic peaking
and CTI
Programmable hue, brightness, saturation,
contrast, sharpness, Gamma control, and noise
supression
Detection of level of copy protection according
to Macrovision standard
Buffered CVBS output
Techwell
Mixed Signal Semiconductor Solutions
Features
TW8806/TW8807
LCD Display Processors
with built-in Video Decoder and T-CON
*TW8806 supports digital panels, TW8807 supports analog panels
Techwell’s TW8806 / TW8807 LCD display processor is a low cost high
quality TFT panel controller with 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 /TW8807 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/TW8807 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/TW8807 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/TW8807 core operates at 1.8 V, the IO at 3.3 V and packaged in a
128-pin PQFP package.
www.techwellinc.com





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