Intel 440GX AGPset, Vcr | Intel instruction

Introduction

Intel introduced the Intel® Pentium® II processor as 350/100 and 400/100 speeds with 512 KB L2 cache versions.

1.3.2Intel® 440GX AGPset

•The Intel® 440GX AGPset is the fourth generation chipset based on the Intel® Pentium® Pro processor architecture. It has been designed to interface with the Intel® Pentium® II processor’s system bus at 100 MHz. Along with its Host-to-PCI bridge interface, the 82443GX host bridge controller has been optimized with a 100 MHz SDRAM memory controller and data path. The 82443GX also features the Accelerated Graphics Port (AGP) interface. The 82443GX component includes the following functions and capabilities:

•Support for single and dual Intel® Pentium® II processor configurations

•64-bit GTL+ based system data bus Interface

•32-bit system address bus support

•64/72-bit main memory interface with optimized support for SDRAM

•32-bit PCI bus interface with integrated PCI arbiter

•AGP interface with up to 133 MHz data transfer rate

•Extensive data buffering between all interfaces for high throughput and concurrent operations

Figure 1-1. Intel® Pentium® II Processor / Intel® 440GX AGPset System Block Diagram

Pentium®II

Pentium®II

Processor

Processor

Host Bus

Video

- DVD

- VMI

- Camera

- Video Capture

- VCR

82443GX

72 Bit

Graphics

2X AGP Bus

w/ECO

Host Bridge

Main

Device

100 MHz

Memory

Display

SDRAM Support

Graphics

Local Memory

PCI Slots

Encoder

TV

Primary PCI Bus

Video BIOS

(PCI Bus #0)

2 IDE Ports
(Ultra DMA/33)
2 USB	USB
Ports	USB
	USB

			System Mgnt (SM) Bus
82371EB
82371EB						IO
(PIIX4E)						IO
(PCI-to-ISA						APIC
Bridge)
						ISA Slots


		ISA Bus
		ISA Bus

System BIOS

sys_blk.vsd

Intel®440GX AGPset Design Guide

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Intel manual Intel 440GX AGPset, Vcr

440GX specifications

The Intel 440GX chipset was launched in 1997 as part of Intel's series of chipsets known as the 440 family, and it served as a critical component for various Pentium II and Pentium III-based motherboard architectures. Specifically designed for the second generation of Intel’s processors, the 440GX delivered enhanced performance and supported a range of important technologies that defined PC architectures of its time.

One of the main features of the Intel 440GX was its support for a 100 MHz front-side bus (FSB), which significantly improved data transfer rates between the CPU and the memory subsystem. This advancement allowed the 440GX to accommodate both the original Pentium II processors as well as the later Pentium III chips, providing compatibility and flexibility for system builders and consumers alike.

The 440GX chipset included an integrated AGP (Accelerated Graphics Port) controller, which supported AGP 2x speeds. This enabled high-performance graphics cards to be utilized effectively, delivering many enhanced graphics capabilities for gaming and multimedia applications. The AGP interface was crucial at the time as it offered a dedicated pathway for graphics data, increasing bandwidth compared to traditional PCI slots.

In terms of memory support, the 440GX could address up to 512 MB of SDRAM, allowing systems built with this chipset to run comfortably with sufficient memory for the era’s demanding applications. The memory controller was capable of supporting both single and double-sided DIMMs, which provided versatility in memory configuration for system builders.

Another notable feature of the Intel 440GX was its support for multi-processor configurations through its Dual Processors support feature. This allowed enterprise and workstation computers to leverage the performance advantages of multiple CPUs, making the chipset suitable for business and professional environments where multitasking and high-performance computing were essential.

On the connectivity front, the chipset supported up to six PCI slots, enhancing peripheral device integration and expansion capabilities. It also included integrated IDE controllers, facilitating connections for hard drives and CD-ROM devices.

Overall, the Intel 440GX chipset represented a balanced combination of performance, flexibility, and technology advancements for its time. Its introduction helped establish a foundation for subsequent advancements in PC technology and set the stage for more powerful computing systems in the years to come.

Contents

Intel 440GX AGPset Design Guide Intel440GX AGPset Design Guide Contents Dimm Solution With FET Switches System Bus Clock Layout 6.36.4 6.5 PIIX4E Power And Ground Pins ISA and X-Bus SignalsThermals / Cooling Solutions 20.1 82371EB PIIX4E IntelPentiumII Processor LAI Issue FET Switches4 DIMM/FET DesignVoltage Regulator Control Silicon Intel440GX AGPset Platform Reference Design Example ATX Placement for a UP Pentium II processor Example NLX Placement for a UP Intel Pentium II processorSolution Space for Single Processor Design Based on Results Solution Space for Single Processor Designs With Single-End Tables Intel Pentium II Processor and Intel 440GX AGPsetIntel Pentium II Processor and Intel 440GX AGPset 100 MHz Motherboard Model MAB12,11,90#, MAB14,13,10, 4 DIMMs Revision History Date Revision Description Intel440GX AGPset Design Guide Introduction Page Introduction About This Design Guide References Intel Pentium II Processor / Intel 440GX AGPset Overview Intel Pentium II Processor Intel 440GX AGPset VCR Dram Interface System Bus InterfaceAccelerated Graphics Port Interface Wired for Management Initiative PCI-to-ISA/IDE Xcelerator PIIX4EPCI Interface System Clocking Remote Service Boot Instrumentation Power Management Design RecommendationsVoltage Definitions Remote Wake-Up General Design Recommendations Introduction Motherboard Design Page Major Signal Sections 82443GX Top View BGA Quadrant Assignment ATX Form Factor Board Description NLX Form Factor Four Layer Board Stack-up Routing Guidelines 1 GTL+ Description 2 GTL+ Layout RecommendationsSingle Processor Design Single Processor Network Topology and Conditions Recommended Trace Lengths for Single Processor Design Single Processor Recommended Trace LengthsTrace Minimum Length Maximum Length Dual Processor Systems Single Processor Systems-Single-End Termination SETDual Processor Network Topology and Conditions Dual Processor Recommended Trace Lengths SET Trace Length Requirements SET Trace Length Requirements Minimizing Crosstalk Additional GuidelinesPractical Considerations Design Methodology Performance Requirements 12. GTL+ Design Process Topology Definition Pre-Layout Simulation Sensitivity AnalysisSimulation Methodology Recommended 100 MHz System Flight Time Specs Placement & Layout Post-Layout Simulation Validation Crosstalk and the Multi-Bit Adjustment FactorFlight Time Measurement Signal Quality Measurement Edge Guideline @ Processor Edge Spec @ Processor Core Timing Analysis Term Description 10. Recommended 100 MHz System Timing Parameters 11. Recommended 100 MHz System Flight Time SpecsTiming Term Intel Pentium II Processor Intel 440GX AGPset Timing Term Value AGP Connector Up Option Layout Guidelines ConnectorAGP Layout and Routing Guidelines 12. Data and Associated Strobe 14. Control Signal Line Length Recommendations On-board AGP Compliant Device Down Option Layout Guidelines13. Source Synchronous Motherboard Recommendations WidthSpace Trace Line Length Line Length Matching Compliant 82443GX Graphics Data Routing Device 16. Control Signal Line Length Recommendations15. Source Synchronous Motherboard Recommendations 1 100 MHz 82443GX Memory Array Considerations 82443GX Memory Subsystem Layout and Routing GuidelinesTo 82443GX MDs & MECCs To DIMM10 DQs To DIMM32 DQs Matching the Reference Planes Adding Additional Decoupling CapacitorRegister Register Data Control Clock Memory Layout & Routing Guidelines Trace Width vs. Trace Spacing 18. FET Switch DQ Route Example Switch 16212 Dimm Module 82443GX 0.6 0.4 0.6 0.4 Dimm Module 82443GX Dimm Module 24. Motherboard Model-DQMB1,5, 4 DIMMs 20. Motherboard Model SCASA#, 4 DIMMs 19. Motherboard Model SRASB#, 4 DIMMs21. Motherboard Model SCASB#, 4 DIMMs 23. Motherboard Model WEB#, 4 DIMMs 22. Motherboard Model WEA#, 4 DIMMs24. Motherboard Model MAA140, 4 DIMMs 3 4 Dimm Routing Guidelines no FET PCI Bus Routing Guidelines25. Motherboard Model MAB12,11,90#, MAB14,13,10, 4 DIMMs VCC3 Decoupling Guidelines Intel 440GX AGPset Platform Host Bridge Controller 492 BGA Intel 440GX AGPset Clock Layout Recommendations Clock Routing SpacingSystem Bus Clock Layout 014 018 Clock PCI Clock Layout Sdram Clock LayoutNet Trace Length Min Max Cap 440GX Ckbf Dlko AGP Clock Layout Net Trace Length Min Max Card Trace Design Checklist Page Overview Pull-up and Pull-down Resistor Values Slot Connectivity Sheet 1 Intel Pentium II Processor ChecklistProcessor Pin Pin Connection Slot Connectivity Sheet 2 Slot Connectivity Sheet 3 GND & Power Pin DefinitionVtt VCC3 Reserved NC Vcc Intel Pentium II Processor Signals Intel Pentium II Processor Clocks Design Checklist Uni-Processor UP Slot 1 Checklist Dual-Processor DP Slot 1 ChecklistSlot 1 Decoupling Capacitors Voltage Regulator Module, VRM Intel 440GX AGPset Clocks 1 CK100 100 MHz Clock SynthesizerProcessor Frequency Select SEL100/66# Ckbf Sdram 1 to 18 Clock Buffer Gcke and Dclkwr Connection 1 82443GX Interface 82443GX Host BridgeGX Connectivity Sheet 1 GX Connectivity Sheet 2 2 82443GX GTL+ Bus Interface 3 82443GX PCI InterfaceGX Connectivity Sheet 3 VTTA, Vttb 4 82443GX AGP Interface Signal Description Register Pulled to ‘0’ Pulled to ‘1’Strapping Options 82443GX Pins/Connection Dimm Pins Pin Function Intel 440GX AGPset Memory InterfaceSdram Connections Sdram Connectivity Dimm Solution With FET Switches Registered Sdram Signal Names Connection 82371EB PIIX4EPIIX4E Connections PIIX4E Connectivity Sheet 1 PIIX4E Connectivity Sheet 2 PIIX4E Connectivity Sheet 3 PIIX4E Connectivity Sheet 4 Signal Resistor IDE Routing GuidelinesCabling Motherboard Reset# PDD150 PDA20Pin32,34 IDE PIIX4E Power And Ground Pins PCI Bus SignalsPIIX4E PWR & GND ISA Signals ISA and X-Bus Signals10. Non-PIIX4E PCI Signals 11. Non-PIIX4E ISA Signals IDE Interface USB Interface12. Non-PIIX4E IDE Flash Design Dual-Footprint Flash DesignFlash Design Considerations PLCC32 to TSOP40 PLCC32 to PSOP44 PDIP32 to TDIP40 XD70 13. Flash Vpp Recommendations Write Protection System and Test Signals Power Management Signals VCC3 Power Button Implementation Miscellaneous 17 82093AA Ioapic Manageability Devices 18.1 Max1617 Temperature Sensor18.2 LM79 Microprocessor System Hardware Monitor Pin Number Pin Name Resistor Value Comment 18.3 82558B LOM ChecklistRequired in both a and B stepping designs USB and Multi-processor Bios Software/BIOSWake On LAN WOL Header Mechanicals Thermals / Cooling SolutionsDesign Considerations Electricals Layout Checklist Applications and Add-in HardwareRouting and Board Fabrication Design Consideration Debug Recommendations Page Slot 1 Test Tools Debug/Simulation ToolsLogic Analyzer Interface LAI In-Target Probe ITP Debug Features Intel Pentium II Processor LAI IssueBus Functional Model BFM 4 I/O Buffer Models 150 330 ohm Kohm430 ohm 150 ohm A20M# 150 330 ohm Debug Logic RecommendationsPICD0# 150 ohm PICD1# Debug Procedures Debug LayoutDebug Considerations Design Considerations Debug Recommendations Third Party Vendors Page Slot 1 Connector ProcessorsGTL+ Bus Slot 1 Terminator Cards Supplier Contact Phone Voltage Regulator Modules Voltage Regulator Control SiliconVoltage Regulator Modules Voltage Regulator Control Silicon Vendors Power Management Components FET Switches4 DIMM/FET DesignIntel 440GX AGPset Clock Drivers Other Processor Components Reference Design Schematics Page Intel 440GX AGPset Platform Reference Design 82443GX Component System bus and Dram Interfaces VRM Power Connectors Front Panel Jumpers