W9970CF Datasheet, PDF(1/6 Page) Winbond – VIDEO GRAPHICS CONTROLLER

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

W9970CF Datasheet, PDF (1/6 Pages) Winbond – VIDEO GRAPHICS CONTROLLER

W9970CF

Video Graphics Controller

FEATURES

u Integrated Video Graphics Controller

â¢ 64-bit graphics engine

â¢ Integrated video accelerator

â¢ On-chip 24-bit true color RAMDAC with up to 135

MHz pixel clock rate

â¢ On-chip clock synthesizers generating up to 135 MHz

VCLK and 80 MHz MCLK

u Graphics Engine

â¢ 64-bit graphics acceleration

â¢ 8/16/24 bit-per-pixel true color acceleration

â¢ Deep command queue to improve GE performance

â¢ Bit block transfer between system memory and

display memory

Ãº HostBLT

Ãº Pattern BLT

Ãº Color/font expanding BLT

Ãº Transparent BLT

Ãº Color/font expansion

Ãº Rectangle fill

Ãº 256 three-operand (source, pattern and

destination) ROPs

â¢ Bresenham line drawing

â¢ Short stroke vector drawing

â¢ Rectangle and line clipping

â¢ 64 Ã 64 Ã 2 or 32 Ã 32 Ã 2 hardware cursor

u Video Acceleration

â¢ Video (YUV) and graphics (RGB) shared frame

buffer architecture

â¢ Two-dimensional bilinear interpolation scaling with

1-pixel resolution from 1Ã to 8Ã

â¢ On-chip standard CCIR 601 YUV to RGB color space

conversion

â¢ Cropping window and filtering supports

â¢ Hardware support for Microsoft DirectDraw feature

set

Ãº Double buffering and page flipping to prevent from

tearing in image

Ãº Transparent BitBLTs of sprites for game

acceleration

Ãº Color keying, chroma keying and window keying

to overlay video and graphics streams

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

â¢ Supports 2Ã scaling to allow 320Ã200 game image to

be displayed at 640 Ã 480 full-screen resolution

â¢ High-quality video playback requiring only 1 MByte

DRAM in 1024 Ã 768 256-color mode

â¢ Dual hardware-accelerated video windows for video

conference applications

u Multimedia Video Interface

â¢ Glueless MPEG-1 video decoder (W9920DF) support

for YUV 4:2:2 video input

â¢ Glueless TV decoder support for YUV 4:2:2, NTSC

or PAL live-video input

â¢ Support for RGB 5:5:5, 5:6:5 or YUV 4:2:2 software

CODEC video input

â¢ Glueless support for 16-bit baseline VESA Advanced

Feature Connector (VAFC)

â¢ Glueless support for 8-bit bidirectional pass-through

VGA feature connector

u Compatibility

â¢ 100% hardware compatible with IBM VGA standard

â¢ VESA BIOS extension support and VESA monitor

timing compliant

â¢ Driver support for all major operating systems, such

as Windows 3.1, Windows 95, Windows NT, and

OS/2 Warp 3.0

u System Bus Interface

â¢ Glueless support for 32-bit PCI Local Bus Revision

2.1 specification

â¢ Zero-wait-state PCI burst mode support

â¢ Linear addressing

â¢ Memory-mapped I/O

u Display Memory Interface

â¢ 64 or 32-bit DRAM interface in a 1, 2, or 4 MByte

configuration

â¢ Flexible interface support for 128K Ã 8, 128K Ã 16,

256K Ã 4, 256K Ã 8, or 256K Ã 16 DRAMs

Preliminary

-1-

March 1996

▷