W9970CF中文資料華邦電子數(shù)據(jù)手冊PDF規(guī)格書

OVERVIEW

The W9970CF Integrated Video Graphics Accelerator is a highly integrated product offered by Winbond to provide high-performance graphical user interface (GUI) acceleration and TV-quality full-screen motion video acceleration for PCI Bus-based IBM PCs or their compatibles. An on-chip RAMDAC and dual programmable clock synthesizers with up to 135 MHz pixel data rate are also integrated to simplify system design and reduce cost.

FEATURES

? Integrated Video Graphics Controller

? 64-bit graphics engine

? Integrated video accelerator

? On-chip 24-bit true color RAMDAC with up to 135 MHz pixel clock rate

? On-chip clock synthesizers generating up to 135 MHz VCLK and 80 MHz MCLK

? Graphics Engine

? 64-bit graphics acceleration

? 8/16/24 bit-per-pixel true color acceleration

? Deep command queue to improve GE performance

? Bit block transfer between system memory and display memory

□ HostBLT

□ Pattern BLT

□ Color/font expanding BLT

□ Transparent BLT

□ Color/font expansion

□ Rectangle fill

□ 256 three-operand (source, pattern and destination) ROPs

? Bresenham line drawing

? Short stroke vector drawing

? Rectangle and line clipping

? 64 x 64 x 2 or 32 ′ 32 x 2 hardware cursor

? Video Acceleration

? Video (YUV) and graphics (RGB) shared frame buffer architecture

? Two-dimensional bilinear interpolation scaling with 1-pixel resolution from 1x to 8x

? On-chip standard CCIR 601 YUV to RGB color space conversion

? Cropping window and filtering supports

? Hardware support for Microsoft DirectDraw feature set

□ Double buffering and page flipping to prevent from tearing in image

□ Transparent BitBLTs of sprites for game acceleration

□ Color keying, chroma keying and window keying to overlay video and graphics streams

□ On-the-fly blending of video and graphics streams

? Supports 2x scaling to allow 320′200 game image to be displayed at 640 x 480 full-screen resolution

? High-quality video playback requiring only 1 MByte DRAM in 1024 x 768 256-color mode

? Dual hardware-accelerated video windows for video conference applications

? Multimedia Video Interface

? Glueless MPEG-1 video decoder (W9920DF) support for YUV 4:2:2 video input

? Glueless TV decoder support for YUV 4:2:2, NTSC or PAL live-video input

? Support for RGB 5:5:5, 5:6:5 or YUV 4:2:2 software CODEC video input

? Glueless support for 16-bit baseline VESA Advanced Feature Connector (VAFC)

? Glueless support for 8-bit bidirectional pass-through VGA feature connector

? Compatibility

? 100 hardware compatible with IBM VGA standard

? VESA BIOS extension support and VESA monitor timing compliant

? Driver support for all major operating systems, such as Windows 3.1, Windows 95, Windows NT, and OS/2 Warp 3.0

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