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| Techwell LCD DIsplay Processors Mixed Signal Semiconductor Solutions TECHWELL DISPLAY Features www..com 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. 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 www.techwellinc.com LCD Display Processor TW8806/TW8807 TW8806 / TW8807 Block Diagram CIN0 CD Display Processors with built-in Video Decoder and T-CON *TW8806 supports digital panels, TW8807 supports analog panels OSD MUX CIN1 CIN2 3X Analog Front End C h r o ma D e m o d u l a t i on Spead Spectrum PLL Alpha Blending TCON VIN1 MUX VIN0 TCON signals YUV Pro c essing YIN0 FPR [7:0] Image Enhancement Scaler / Deinterlacer MUX YIN1 Panel Timing Generator FPG [7:0] FPB [7:0] MUX MUX Triple DAC www..com YIN3 Color Matrix YIN2 Gamma / Dither Line Buffers FPVS FPHS FPDE FPCLK FPPWC FPBIAS ROUT GOUT BOUT SOG SYNC PLL DTVCLK DTVVS DTVHS DTVDE DTVD [23:0] COAST Sync Processors 4H Adaptive Comb Filter DTV I/F MC SDA Input Format Measurement Registers 2 Wire Serial Bus MC SCL MC SIA 24bit Digital RGB and 8/16/24-bit YCbCr Inputs Allows connection to analog PC Graphics cards with the addition of a 3 channel A/D converter for up to WXGA resolution Allows YCbCr digital component input for DTV 480p, 720p, 1080i For connection to digital PC graphics cards (with the addition of a PanelLinkTM DVI interface receiver) TFT Panel Support Supports digital and analog LCD panels Supports a wide variety of active matrix TFT panels one pixel per clock Supports panel with resolution up to WXGA (1280 x 768) Supports 3, 4, 6 or 8 bits per pixel up to 16.8 million colors Timing Controller (TCON) Support programmable interface signals for control column(source) driver / row(gate) driver Support analog RGB output Programmable VCOM output Dual channel charge pump output with back sensing Miscellaneous Supports 2-wire serial bus interface Spread spectrum PLL 5V tolerant I/O Power-down mode Typical power consumption 600 mW Single 27MHz crystal 128-pin PQFP package Analog RGB / YCbCr Inputs Allow direct connection to analog RGB or YCbCr input up to WVGA or 480p resolution Built-in PLL support for embedded or separated sync Input measurement support About Techwell Techwell is a fabless semiconductor company that designs, markets and sells mixed signal integrated circuits for multiple digital video applications in the consumer, security surveillance and automotive markets, including advanced TVs, multifunction LCD monitors, DVD Recorders, security surveillance systems and in-car LCD displays. Founded in 1997, we currently have over 70 employees and are headquartered in San Jose, California, with additional R&D and sales activities in South Korea, Japan, Taiwan and China. Techwell For more information on Techwell, please contact us at 1-408-435-3888 (c) 2006 Techwell Inc. All rights reserved. All other trademarks are property of their respective owners Mixed Signal Semiconductor Solutions TECHWELL INC. TEL 1-408-435-3888 www.techwellinc.com |
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