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| TECHWELL DISPLAY Automotive Display ICs TW8827 Ultra low cost, highly integrated LCD controller for analog LCD panels The TW8827 is an ultra low cost, highly integrated LCD TFT flat panel controller supporting analog panels. To reduce BOM cost, TW8827 integrates a www..com video decoder supporting CBVS & S-Video inputs, an 8-bit MCU, a CCFL controller and a LED controller. The TW8827 integrates a NTSC/PAL/SECAM high quality NTSC/PAL/SECAM 2D video decoder and a 2D De-interlacer/Scaler. In addition, 16-bit digital RGB/YCbCr inputs are supported through built-in digital interface. Target Applications Navigation + DVD + TV Back up Camera Rear Seat Entertainment Car TV Portable DVD PMP Portable TV Door Phone Photo Frame DMB TV Baby Monitor Home Audio In Flight Entertainment Key Features Supports analog inputs including CVBS & S-Video signals and digital inputs including 18-bitss RGB/YCbCr. Both interlaced and progressive ITU-656 and ITU-601 formats are supported Supports analog panel up to WQVGA resolutions Integrated 8-bit 8051 MCU, LED controller and CCFL controller Built-in 8 color font based OSD with ~200 ROM & 75 RAM fonts Embedded Image Enhancement Programmable CTI, hue, brightness, saturation, contrast & sharpness control Black/White Stretch Programmable favorite color enhancement- up to three colors (Skin, Grass & Sky) Programmable Gamma Correction table TW8827 Functional Block Diagram CCFL Controller Font OSD Video Decoder CVBS/ S-Video 2D De-interlacer 4H Comb Filter Image Enhancement DAC R G B } Analog Panel Panel Timing MUX Scaler 16-bit Digital RGB Digital Interface 8051 MCU (8-bit) Gamma Control (8-bit LUT) SPI Interface TCON Analog Panel LED Controller Order Information Part # TW8827 Name TQFP 80 Description Thin Quad Flat Package Pin Count 80 Body Size 12 x 12 mm Automotive Display ICs Analog Video Decoder NTSC (M, 4.34) and PAL (B, D, G, H, I, M, N, N combination), PAL (60), SECAM with automatic format detection Advanced synchronization processing for VCR trick play signal Two 10-bit ADCs and analog clamping circuit. Built-in analog anti-aliasing filter 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: 2 composite video www..com 1 S-Video 4-H adaptive comb filter Y/C separation PAL delay line for color phase error correction Digital PLL for both color and horizontal locking Programmable hue, brightness, saturation, contrast, sharpness, Gamma control, and noise suppression Automatic color control and color killer Detection of level of copy protection according to Macrovision standard TW8827 Ultra low cost, highly integrated LCD controller for analog panels CCFL Controller Single channel CCFL controller based on push-pull architecture Lamp fault monitoring- Lamp Open, Lamp Over-current, Failure to Strike and Over-voltage Programmable Lamp Frequency to move EMI spurs out of band Analog or digital brightness control. 300:1 dimming range with the digital brightness control. Low power stand-by mode Image Processing & Enhancement Built-in 2D de-interlacing engine Built-in high quality scalar Programmable hue, brightness, saturation, contrast Sharpness control with vertical peaking Programmable color transient improvement control Independent RGB gain and offset controls Panorama / Water-glass scaling YCbCr hue adjustment Programmable Gamma correction tables Built-in YCbCr to RGB color space converter Black/White Stretch Programmable favorite color enhancement 16bits Digital RGB/YCbCr Inputs Supports 18-bits RGB/YCbCr digital input Supports both interlaced and progressive ITU 656 source TFT Panel Support Supports a wide variety of Analog active matrix TFT panels Supports analog panel up to WQVGA (480 x 234) Power Management Supports Panel power sequencing Supports DPMS for monitor power management 1.8 / 3.3 V operation Font OSD Built-in OSD controller with integrated character ROM and programmable RAM font- 202 ROM & 75 RAM fonts Multi-window OSD support with color pallet Support OSD overlay with alpha blending Timing Controller (TCON) Support programmable interface signals for control Column (source) driver / row (gate) driver Built-in Microcontroller Support external SPI Interface Support I2C Master interface with GPIO Support 2 LED signal interface with GPIO Support UART interface with GPIO Support IR or interrupt with GPIO Miscellaneous Supports 2-wire serial bus interface Temperature rating: -40 C to +85 C Spread spectrum PLL Low-speed ADC for KEY scan Programmable panel VCOM offset control 5V tolerant I/O Power-down mode Typical power consumption less than TBD Single 27MHz crystal LED Controller Boost-up DC and PWM Dimming Control Built-in Open LED Protection 1MHz fixed Switching Frequency Resistor-programmable LED Current 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 125 employees and are headquartered in San Jose, California, with additional R&D and sales activities in South Korea, Japan, Taiwan and China. NASDAQ: TWLL 2008 Techwell Inc. All rights reserved. |
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