MX86250 datasheet(3/25 Pages) ETC1

Part #	MX86250

Description	THE ADVANCED 64-BIT WINDOWS-95 AND DIRECTDRAW ACCELERATOR

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MX86250

P/N:PM0387

REV. 1.1, JUL 26, 1996

2.Functional Description

This chapter describes the architecture and function blocks of te architecturtecture and function blocks of the MX86250.

2.1 Overview

The MX86250 architecture is described in Figure 2.1, MX86250 function block diagram. As shown in the diagram,

the major function blocks are as follows :

• 64 bit Graphics Co-processor

• Memory Controller

• PCI Bus Interface Unit

• Video Processor

• Media Port

• True color RAMDAC

• Dual Clock Synthesizer

• DDC/I2C/EEPROM interface ports

• VGA Controller

The function block modules are connected with 64-bit buses. Multiple FIFOs buffer data flows within the tight pipeline

structures allowing concurrent operations and maximum bandwidth.

Figure 1 : MX86250 Function Block Diagram

PCI Bus Interface Unit

PCI

BUS

DDC

12C

EEPROM

Dual Clock

Synthsizer

Peripheral Interface

Ports

Gx

Controller

Scaler &

Filters

Hardware Cursor

DCLK

MCLK

Gx/Video

FIFO

CRT

Controller

Attribute

Controller

VGA

Sequencer

Display Process

Command/Data FIFO

Scaler &

Filters

Color

Converter

Source FIFO

ROP

ALU

Memory

Controller

Destination FIFO

Pattern MAP

Video Processor

Ture Color

RAM DAC

R.G.B

DRAM

Interface

VMI

Connector

Medio

Port

Graphics Processor

INDEX

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