MX86250 Datasheet

IC型號：
MX86250
PDF描述：
THE ADVANCED 64-BIT WINDOWS-95 AND DIRECTDRAW ACCELERATOR
文件大?。?/label>
134.62KB
PDF頁數(shù)：
25頁
芯片廠家：
ETC

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INDEX

MX86250

THE ADVANCED 64-BIT WINDOWS-95

AND DIRECTDRAW ACCELERATOR

1. INTRODUCTION

The MX86250 is a new generation of fully integrated

graphics and video accelerator. On a single chip, it inte-

grates a 64-bit graphics CoProcessor, a true-color video

processor, 135 MHz RAMDAC and dual programmable

clock synthesizer. The MX86250 not only delivers extreme

high performance in conventional GUI acceleration, it also

provides very rich functionality for motion video applica-

tions. The MX86250 true color video processor allows

full screen full motion playback of AVI and MPEG video

from software based Codec's such as MPEG, Cinepak

and Indeo. For even higher quality MPEG video playback,

the MX86250 Media port supports the VMI connector link-

ing to an external MPEG-1 decoder chip. The Media port

also provides for playback and capture of live video input

from TV tuner or video camera.

One key design goal of the MX86250 is to achieve the

highest possible memory bandwidth in the display

memory subsystem using main stream and cost effec-

tive EDO DRAM chips. By applying the RISC design tech-

nique of super pipelining, the MX86250 graphics

CoProcessor can execute one bitblt operation in every

clock cycle. When running at 50 Mhz and above, using -

50 or faster EDO DRAM ( 20ns page mode cycle time),

the bandwidth can reach 400 MB/sec and above. This

extremely high bandwidth gives top-notch Windows GUI

performance and fast frame rate in motion video play-

back.

For mainstream software Codec delivered video play-

back, the MX86250 provides video acceleration by a

second generation鈥?video processor consisting of YUV

to RGB converter, scaler, and two dimensional bilinear

filter. The scaler can zoom the video windows at arbi-

trary ratios. The bilinear filter provides both horizontal and

vertical interpolation which is absent from 1st genera-

tion video chips.

For Windows 95 Games, the MX86250 supports

DirectDraw with a rich set of features such as fast trans-

parent Blts, double buffering and page flipping so that

Windows 95 based games can achieve high speed sprite

animation.

1.1 FEATURES

High Performance 64 bit Graphics CoProcessor

鈥?Uniformly accelerated graphics operations in all pixel

formats : 256 color, High color and True color

鈥?Optimized graphics engine for BitBLTs, rectangle fill,

pattern fill, line draw, color expansion, text transfer,

and clipping

鈥?Raster Operations (ROPs) with 3 operand BitBLT ALU

鈥?One chip 8x8x24 pattern memory achieves highest

thrughput in the most common BitBLT in Windows鈥?/div>

the Pattern BLT

鈥?Deep on-chip Source and Destination FIFOs for sus

tained burst cycles in BitBLTs

鈥?Double buffered CoProcessor registers allows concur

rent processing with CPU

鈥?Built in Hardware cursor

Extremely high bandwidth

鈥?Achieves single clock cycle DRAM access in

Graphics Processor, Video Processor and Display

Processor

P/N:PM0387

鈥?Provides 400 MB/sec memory bandwidth using -50

EDO DRAM chips

鈥?Even higher performance can be achieved by using -

35 EDO DRAM for 533 MB/sec bandwidth which is

comparable to synchronous DRAM

Fully Integrated for Lower system cost

鈥?Integrated 24 bit True Color RAMDAC supports 135

Mhz pixel rate and 256x18 look-up table with High

Color and True color bypass mode support

鈥?Integrated dual clock synthesizers

鈥?Glueless PCI local bus interface

鈥?Two wire interface to EEPROM, VESA DDC inter

face or I

C channel

Flexible Display Memory configuration

鈥?1,2, or 4 MB display memory.

鈥?256K x 4, 256K x 8, and 256K x 16 dual CAS or dual

WE DRAM.

鈥?Fast-page and Hyper-page EDO

REV. 1.1, JUL 26, 1996

型號

版本

描述

廠商

下載
MX86200

英文版

Peripheral IC

ETC

MX86200
MX86200

英文版

HIGH PERFORMANCE 64-BIT GUI/VIDEO ACCELERATOR

MX86200
MX86250

英文版

THE ADVANCED 64-BIT WINDOWS-95 AND DIRECTDRAW ACCELERATOR

ETC

MX86250
MX86250

英文版

THE ADVANCED 64-BIT WINDOWS-95 AND DIRECTDRAW ACCELERATOR

ETC [ETC]

MX86250
MX86251

英文版

3D graphic chipset

MCNIX

MX86251
MX86251

英文版

3D graphic chipset

MCNIX [Mac...

MX86251

MX86250 Datasheet

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