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| TW8800 LCD FLAT PANEL TV / PC MONITOR CONTROLLER Introduction Analog Video Decoder PC VGA Output NTSC, PAL or SECAM Tuner PRELIMINARY 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 fast forward, backward, and pause mode Triple ADC Techwell TW8800 Audio Amp MicroController - Three 8-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 four composite video inputs - Three composite, one S-video or one YPbPr component input - Two composite, two S-Video or two YPbPr component inputs Digital Input LCD Panel Applications LCD TVs for home and mobile use Computer LCD Panel Monitors with Television Portable DVD and DVRs players Progressive Scan TV, DTV and HDTV monitors Head Mount Displays - Two composite, one S-Video and one YPbPr component input Video Processing - Switchable Notch or 2/4-H adaptive comb filter Y/C separation - PAL delay line for color phase error correction - Image enhancement with 2D peaking and CTI. - Digital sub-carrier PLL for accurate color decoding - Digital Horizontal PLL and advanced processing for non-standard video signals synchronization Features The TW8800 incorporates all the features required to create multi-purpose LCD TV systems in a single package. It contains all the circuits required to adapt standard NTSC/PAL/SECAM analog TV input signals for display on various TFT LCD panel types. With one external IC it becomes both an LCD PC monitor controller and an HDTV controller. Analog YPbPr and S-Video inputs allow direct connection to analog component sources found on DVD and HDTV decoders. Digital TTL YCbCr, and RGB inputs allow digital TV, HDTV, or digital VGA monitor signals to be input for display on the same LCD display panel. Techwell's TW8800 is an enhanced version of the TW88 flat panel LCD TV/PC monitor controller. Primary enhancements include: 4H Comb Filter, downscaling to QVGA output resolution, digital progressive scan YCbCr input including 422 and 444 input, one GAMMA lookup table per color, and a new 48-bit YCbCr/RGB port. To further facilitate the move to wide screen displays, the TW8800 has the ability to show 4:3 images correctly proportioned and centered in a 16:9 displays. - Programmable hue, brightness, saturation, contrast, sharpness, Gamma control, and noise suppression - Automatic color control and color killer - High quality horizontal and vertical filtered scaling with arbitrary scale down ratio - Detection of level of copy protection according to Macrovision standard 24 and 48-bit Digital RGB and YCbCr Inputs - For connection to digital PC graphics cards (with the addition of a PanelLinkTM DVI interface receiver) - For connection to analog PC Graphics cards (with the addition of a 3 channel A/D converter) - YCbCr digital component input for SDTV 480p or 480i TECHWELL, INC. 4 03/18/2002 REV. 0.91 PRELIMINARY TW8800 LCD FLAT PANEL TV / PC MONITOR CONTROLLER TFT Panel Support - DTV hue adjustment PRELIMINARY - Supports a wide variety of active matrix TFT panels either one or two pixels per clock - Supports panel with resolution up to SXGA (1280 x 1024) - Supports 3, 4, 6 or 8 bits per pixel up to 16.8 million colors - Programmable Gamma correction for each color - Operated in Frame Sync mode only with no external memory required. - Built-in YCbCr to RGB color space converter.. On Screen Display Power Management - Built-in OSD controller with integrated character ROM. - Supports Panel power sequencing. - Supports DPMS for monitor power management. - 3.3V operation - Supports dedicated port for an optional external OSD controller. Image Control - Programmable hue, brightness, saturation, contrast - Automatic color control and color killer - Sharpness control with vertical peaking up to +12db - Programmable color transient improvement control - Supports programmable cropping of input video and graphics. - High quality expansion for low-resolution graphics. - Built-in video de-interlacing engine for correctly positioning of odd and even field. - Independent RGB gain and offset controls Miscellaneous - 5V tolerant I/O - Supports 2-wire serial bus interface - Two wire MPU serial bus interface - Power-down mode - Typical power consumption 1W - Single 27MHz crystal - 208-pin PQFP package OSDPID (3:0) OSDPOE OSDVSYN PLLCK O PLLCKI OSDPOD VREFN VREFP OSDPIE OSDCLK VQVD VCOM LPF Clam 8-bit ADC Filter Adaptive Chroma Demodulation Pr IN YCbCr to RGB Cr Luma/Chroma proc De-interlace Crop & Scale OSD MUX Clam 8-bit ADC C_PbIN (0) C_PbIN (1) YIN (0) YIN (1) YIN (2) YIN (3) MXOUT YMIN DTVDE DTVHS DTVVS DTVCLK DTVD (0:7) DTVD (8:15) DTVD (16:23) DDC_SDA DDC_SCL PLL CL MP PLL PDEN DIGDE DIGHS DIGVS DIGCLK DIGD (0:23) DIGD FPR0(7:0) Filter MUX OSD Alpha Blending FPG0(7:0) FPB0(7:0) Cb Dither/Output Formatter MUX AGC/Clamp 8-bit ADC Filter FPR1(7:0) FPG1(7:0) FPB1(7:0) FPCLK FPVS FPHS FPDE FPPWC FPBIAS Y 4H adaptive comb filter or Notch/ bandpass Y/C separation Picture Adjustment Sync Processor CRTC Gamma Correction MUX FIFO 2 Wire Serial Bus MC_SIAD MC_SDA MC_SCLK Figure 1 TW8800 Flat Panel TV/Monitor controller functional block diagram TECHWELL, INC. 5 03/18/2002 REV. 0.91 PRELIMINARY Flat Panel |
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