Features: General
`Integrated Spread-Spectrum DCLK PLL
`Integrated 8-bit triple-channel 140MHz ADC/PLL
`Integrated programmable timing controller
`Integrated microcontroller compatible with the
standard 8032
`24 General-purpose input/outputs (GPIOs)
`Embedded fully functional multi-language OSD
support
`Embedded DDC supports DDC1, DDC2B, and
DDC/CI
`Supports ISP functionality on DDC channel
`3 Embedded programmable PWM
`Zoom scaling up and down
`Embedded Pattern Generator
`No external memory required
`Requires only one crystal to generate all timing
Analog RGB Input Interface
`Supports up to 140MHz (SXGA @ 75Hz)
`Supports Sync On Green (SOG) and de-composite
sync modes
`On-chip high-performance PLLs
Digital Input Interface
`Supports 24-bit pixel digital input up to 160MHz
`Supports 12-bit DVO input
`Supports 16/24-bit YUV422/444 video format
input
`Supports 8-bit video format input
`Built-in YUV to RGB color space converter &
de-interlace
`Capture window auto position & auto phase
tracking capability
Auto Detection /Auto Calibration
`Input format detection
`Compatibility with standard VESA mode and
support for user-defined mode
`Smart engine for Phase and Image position
calibration
Scaling
`Fully programmable zoom ratios
`Independent horizontal/vertical scaling
`Advanced zoom algorithm provides high image
quality
`Sharpness/Smooth filter enhancement
Color Processor
`Digital brightness and contrast adjustments
`Gamma correction
`Dithering logic for 18-bit panel color depth
enhancement
Output Interface
`Fully programmable, built-in display timing
generator
`1 and 2-pixel/clock panel support, up to 140MHz
`Pin swap, odd/even swap and red/blue group swap
`Programmable TCON function support
`Reduced EMI and Power saving features
Host Interface
`Supports 3/4 pins MCU serial bus interface
`Support parallel bus interface while using internal
MCU
Embedded OSD
`12*18 dot font per character
`Embedded 256 characters and symbols including
16 multi-color symbols
`User font RAM, which allows programming of 128
special symbols
`7 background colors and 8 character colors
`Programmable width and height control
`4 background windows
`Selectable shadow color for windows and
characters
`Intensity, blinking effects
`Fade-in/out effect
`Frame shadowing and independent row shadowing
`Frame bordering and independent row bordering
`4 channel 8-bits PWM output, and selectable PWM
clock frequency
`Row-to-Row spacing to maintain constant display
height
`Window alpha-blending effect
Power & Technology
`2.5V/3.3V power supply
`0.25m CMOS process; 208-pin PQFP packagePinout
DescriptionThe Realtek RTD2020 is a highly-integrated single chip IC controller solution for producing real time, top quality digital video and computer graphic images on LCD monitor/flat panel displays, such as XGA LCD monitors. LCD monitors and flat panel displays provide a sharp, flicker free display while saving space and energy for desktop PC applications. The RTD2020 provides an ideal interface between industry standard digital graphics controllers and a wide variety of LCD panel devices. Flat panel devices using the RTD2020 can support all incoming VESA modes and interface to any TFT LCD device, up to SXGA (1280x1024) resolution.
For increased flexibility, the RTD2020 supports both analog and digital interface inputs. The embedded 8-bit triple-channel 140MHz high-quality Analog to Digital Converter (ADC) and PLL support up to a 1280x1024 75Hz RGB analog input signal. The digital interface can support Transmission Minimized Differential Signaling (TMDS) receiver or Video-Decoder or DVO digital output signals up to 160MHz.
The RTD2020 features an embedded On-Screen Display (OSD) engine. This OSD enables either character based or bit map based menu display. Through this menu, display parameters, such as brightness and contrast, can be controlled, and information on resolution and frequency, can be displayed. The embedded display pattern generator is a function for panel testing. Processing 24-bit RGB or 16-bit YUV input data streams, and conversion of input VGA signals to high resolution output, the RTD2020 implements a sophisticated scaling algorithm.
This feature allows the RTD2020 to perform horizontal and vertical interpolation or replication and up & down image scaling, based on programmable parameters, to create images of the highest quality. The built-in advanced filtering engine enables independent vertical and horizontal zoom/shrink, and, through enhancement of individual pixels, enhances image sharpness, and provides superb visual quality. This allows appropriate sized display of crisp, sharp text and smooth, clear graphics, taking full advantage of LCD flat panel technology.
Also featured are enhanced color processing functions, including gamma correction and dithering logic. Brightness, contrast and gamma correction can be programmed through the internal gamma correction lookup tables. Full control of output panel data is obtained by color mapping input RGB data. The 8-bit/color pixel path offers up to 16.7 million color support for 24-bit TFT LCD panels. 18-bit LCD panels are also supported through spatial and temporal dither algorithms.
Increased integration in the RTD2020 includes components such as an 8032 compatible micro controller, and DDC RAM to provide monitor information the PC through the DDC1/DDC2B protocol. Internal System Programming (ISP) is accomplished through the DDC serial bus, supporting enhanced DDC-communication from PC to monitor, such as DDC/CI is also supported.
Finally, the Timing-Controller (TCON) generates the control signals for LCD-panel rather than LCD-monitor, and the embedded spread-spectrum technology reduces EMI effects.
All these features make the RTD2020 is the optimum solution for superior-quality image display.
RTD2020 Data Sheet
