Figures

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Intel® Pentium® II Processor / Intel®440GX AGPset

 

 

System Block Diagram

1-4

2-1

Major Signal Sections (82443GX Top View)

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Example ATX Placement for a UP Pentium®II processor/

 

 

Intel® 440GX AGPset Design

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Example NLX Placement for a UP Intel®Pentium®II processor /

 

 

Intel® 440GX Design

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Four Layer Board Stack-up

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Six Layer Board Stack-up With 4 Signal Planes and 2 Power Planes

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Six Layer Board Stack-up With 3 Signal Planes and 3 Power Planes

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Recommended Topology for Single Processor Design

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2-8

Solution Space for Single Processor Design (Based on Results

 

 

of Parametric Sweeps)

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Recommended Topology for Dual Processor Design

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Topology for Single Processor Designs With Single-End

 

 

Termination (SET)

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Solution Space for Single Processor Designs With Single-End

 

 

Termination (SET)

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GTL+ Design Process

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Pre-layout simulation process

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AGP Connector Layout Guidelines

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On-board AGP Compliant Device Layout Guidelines

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FET Switch Example

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Registered SDRAM DIMM Example

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Matching the Reference Planes and Adding Decoupling Capacitor

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4 DIMMs (Single or Double-Sided)

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Motherboard Model—Data (MDxx), 4 DIMMs

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Motherboard Model—DQMA[0,2:4,6:7], 4 DIMMs

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Motherboard Model—DQM_A[1,5], 4 DIMMs

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Motherboard Model—DQM_A[1,5], 4 DIMMs

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Motherboard Model—DQM_B[1,5], 4 DIMMs

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Motherboard Model—CS_A#/CS_B#, 4 DIMMs

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Motherboard Model—SRAS_A#, 4 DIMMs

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Motherboard Model—Data (MDxx) Lines, 4 DIMMs (No FET)

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PCI Bus Layout Example

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82443GX Decoupling

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Clock Trace Spacing Guidelines

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AGP Clock Layout

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Pull-up Resistor Example

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3-2

GCKE & DCLKWR Connections

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3-3

Current Solution With Existing FET Switches

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3-4

Series Resistor Placement for Primary IDE Connectors

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Dual Footprint Flash Layouts

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nterfacing Intel’s Flash with PIIX4E in Desktop

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Interfacing Intel’s Flash with PIIX4E in Desktop

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PWRGOOD & PWROK Logic

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LAI Probe Input Circuit

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Intel®440GX AGPset Design Guide

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Intel manual Intel Pentium II Processor / Intel 440GX AGPset, Example ATX Placement for a UP Pentium II processor
Page 6 Page 8

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.
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