RTD2020 查看數據表（PDF） - Unspecified

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RTD2020

FLAT PANEL DISPLAY CONTROLLER

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RTD2020

2. General Description

The 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.

2002/11/12

3

Rev.1.20

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