Transcript
TECHWELL DISPLAY
LCD Display Processors
TW8811
Target Applications Navigation system In dash DVD Rear-seat/head-mount display Automotive TV
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 Three 10-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 Up to 1 YPbPr High quality motion adaptive 3D comb filter for both NTSC and PAL with concurrent 3D noise reduction PAL delay line for color phase error correction Image enhancement with 2D dynamic peaking and CTI Digital sub-carrier PLL for accurate color decoding Digital horizontal PLL and Advanced synchronication processing for VCR playback and weak signal performance Programmable hue, brightness, saturation, contrast, sharpness Detection of level of copy protection according to Macrovision standard Support YPbPr input up to 1080i with sub-sampled resolution Support automatic standard detection for YPbPr unput
In-Car LCD Display Processor
TW8811 is a high performance integrated LCD display processor designed for in-car display applications including navigation systems, in dash DVD players, rear-seat/head-mount displays, and automotive TVs. The chip uses a single 27Mhz crystal, comes in a 208-pin LQFP package and is qualified for automotive applications including -40C to +85C temperatures and 1,000 hours of reliability testing. TW8811 requires an external 64mbit SDRAM to support PIP and other advanced functions. Inputs include composite video, s-video, YPbPr, analog RGB, 24-bit digital RGB and 8/16/24 bit YCbCr. For composite video streams, a high quality 3D comb filter for NTSC and PAL with concurrent 3D noise reduction is integrated to reduce artifacts typically found in analog video signals. In addition to a 3D comb filter, a number of proprietary image processing algorithms are implemented in TW8811 to improve picture quality including a built in 2D-deinterlacing engine with low angle compensation, black/white stretch and color enhancement. TW8811 has a sophisticated PIP function that includes Picture in Picture (PIP) with variable sub-window size, picture over picture (POP), and multiple PIP. The TW8811 on-screen display can select 256 colors from 24-bit colors (16.7 million colors) and is a graphic style OSD with a variety of functions including blinking, transparency, blending, and multi-window support. The TW8811 also supports external 18-bit OSDs with external alpha blending control. TW8811 System Diagram
64Mbit SDRAM
CVBS/S-Video T-CON
YPbPr Analog RGB (Up to 1080i)
TW8811
Analog RGB
24-bit Digital RGB
8051 MCU
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Digital RGB
LCD Panel
LCD Display Processors
TW8811
SOG0 SOG1
MemBA [1:0]
MemWEN
MemRAS, MemCAS
MemDQM[1:0]
Triple DAC
FPB [7:0]
Output MUX
Output Formatter
RGBMIX / CSC
Image Control
PIP MUX
FPG [7:0]
FPVS FPHS FPDE FPCLK
TCON
BIN0 BIN1
analog RGB
FPR [7:0]
Gamma / Dither
GIN1
Image Enhancement
GIN0
Scaler / Deinterlacer
RIN1
PLL & RGB ADCs
RIN0
MUX MUX MUX MUX
VREFP
Line Buffers
VREFN
PIP Engine
IN MUX
VCOM
Bitmapped OSG
YUV Processing
YOUT
MEMORY CONTROLLER
Color Matrix
YIN2 YIN3
Chroma Demodulation
YIN1
MUX
YIN0
Analog Front End
CIN
Component Processor
Sync Processor
3D Adaptive Comb FIlter
TW8811 Block Diagram
Mem_ADR [11:0]
Mem_Data [15:0]
In-Car LCD Display Processor
FPPWC FPBIAS
Panel Timing Generator
HS MC SDA
VS
DTVVS DTVHS DTVDE DTVD [23:0]
DTV I/F
DTVCLK
Color Matrix
Input Format Measurement
Registers
2 Wire Serial Bus
MC SCLK MC SIAD
HAD [7:0]
8-bit Parallel Bus
HCS, HALE HRDN, HWEN
LCD Display Processors
TW8811 In-Car LCD Display Processor
Analog RGB Inputs Triple 80 MHz 9-bit ADCs with clampling and programmable gain amplifier Up to three independent RGB / YPbPr channels with corresponding SOG Built-in line locked PLL with sync separator Allows high resolution components inputs like DTV 480p, 720p, 1080i
24-bit Digital RGB and 8/16/24-bit YCbCr Inputs Allows connection with alternative Video and PC Graphics inputs Supports both 656 and 601 video formats Allows connection to HDMI | DVI receiver
On Screen Display Selectable 256 colors from 24-bit color (16.7 million colors) Supports window bitmapped OSD Built-in OSD controller with BitBlit Engine Support variety functions including blinking, transparency, blending, and multi-windows Supports External 16-bit OSD with external alpha blending control Supports OSD compression
TFT Panel Support Supports panel with resolution up to WXGA (1366x768) Supports 3, 4, 6, or 8 bits per pixel up to 16.8 million colors with built-in dithering engine Supports single channel TTL panel Supports analog panel with analog RGB output Built-in programmable timing controller
Image Processing Built-in 2D de-interlacing engine with proprietary low angle compensation circuit for smooth video rendering Built-in high quality scaler with nonlinear scaling support Programmable hue, brightness, saturation, contrast Sharpness control Supports programmable cropping of input video and graphics Independent RGB gain and offset controls Panorama / Water-glass scaling DTV hue adjustment Programmable Gamma correction for each color Operated in Frame Sync mode Black / White Stretch Programmable favorite color enhancement
LCD Display Processor
TW8811
In-Car LCD Display Processor
Clock Generation
PIP Function
Frequency synthesizer with spread spectrum generate memory and display clocks Modulation frequency and spread width can be selectable
PIP with variable sub window size POP Multiple PIP support Built-in high quality up/down scaling engine for PIP
Host Interface Supports 2-wire serial bus interface Supports 8-bits Parallel Host Interface Supports DMA transfer
Miscellaneous Power-down mode Single 27 MHz crystal 208-pin LQFPpackage -40C to +85C temperature guarantee 1,000 hours reliability tested
SDRAM Supports 16-bits Bus width SDRAM 64Mbit SDRAM recommended
Power Management Supports panel power sequencing Supports DPMS for monitor power management 1.8 / 3.3 V operation
About Intersil Techwell, Inc. Techwell, now part of Intersil, designs, markets and sells mixed signal integrated circuits for multiple video applications in the security surveillance and automotive infotainment markets. Intersil Techwell designs application specific products that enable the conversion of analog video signals to digital form and perform advanced digital video processing to facilitate the display, storage and transport of video content.
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