March
Design Guide
Intel 440GX AGPset
Intel440GX AGPset Design Guide
Contents
Validation
82371EB PIIX4E
4.3.1 IntelPentiumII Processor LAI Issue
Figures
Tables
Intel440GX AGPset Design Guide
Revision History
Date
Revision
Intel440GX AGPset Design Guide
Introduction
Page
Introduction
Introduction
1.1 About This Design Guide
Intel 440GX AGPset Datasheet WWW order number
1.2 References
Introduction
AP-589 EMI WWW order number
Introduction
1.3 Intel Pentium II Processor / Intel 440GX AGPset Overview
1.3.1 Intel Pentium II Processor
Introduction
1.3.2 Intel 440GX AGPset
1.3.2.2 DRAM Interface
1.3.2.1 System Bus Interface
1.3.2.3 Accelerated Graphics Port Interface
Introduction
1.3.3 PCI-to-ISA/IDE Xcelerator PIIX4E
1.3.4 Wired for Management Initiative
1.3.2.4 PCI Interface
1.3.2.5 System Clocking
Introduction
1.3.3.2 Remote Service Boot
1.3.3.1 Instrumentation
1.4 Design Recommendations
1.3.3.4 Power Management
1.4.1 Voltage Definitions
1.3.3.3 Remote Wake-Up
1.4.3 Transitioning from Intel 440BX AGPset to Intel 440GX
1.4.2 General Design Recommendations
AGPset Design
Introduction
Intel440GX AGPset Design Guide
Introduction
Motherboard Design
Page
Motherboard Layout and Routing
Figure 2-1. Major Signal Sections 82443GX Top View
Guidelines
2.1 BGA Quadrant Assignment
ATX Form Factor
Motherboard Layout and Routing Guidelines
NLX Form Factor
2.2 Board Description
Motherboard Layout and Routing Guidelines
Motherboard Layout and Routing Guidelines
Figure 2-4. Four Layer Board Stack-up
Motherboard Layout and Routing Guidelines
2.3 Routing Guidelines
2.3.2 GTL+ Layout Recommendations
2.3.1 GTL+ Description
2.3.3 Single Processor Design
2.3.3.1 Single Processor Network Topology and Conditions
Motherboard Layout and Routing Guidelines
2.3.3.2 Single Processor Recommended Trace Lengths
Table 2-1. Recommended Trace Lengths for Single Processor Design
2.3.5 Single Processor Systems-Single-End Termination SET
2.3.4 Dual Processor Systems
2.3.4.1 Dual Processor Network Topology and Conditions
2.3.4.2 Dual Processor Recommended Trace Lengths
Motherboard Layout and Routing Guidelines
2.3.5.2 SET Trace Length Requirements
Table 2-3. SET Trace Length Requirements
2.3.6.1 Minimizing Crosstalk
2.3.6 Additional Guidelines
2.3.6.2 Practical Considerations
Motherboard Layout and Routing Guidelines
Motherboard Layout and Routing Guidelines
2.3.7 Design Methodology
Motherboard Layout and Routing Guidelines
2.3.8 Performance Requirements
Figure 2-12. GTL+ Design Process
2.3.10 Pre-Layout Simulation Sensitivity Analysis
2.3.9 Topology Definition
2.3.11 Simulation Methodology
Table 2-4. Recommended 100 MHz System Flight Time Specs
2.5 Post-Layout Simulation
2.4 Placement & Layout
Figure 2-13. Pre-layout simulation process
Motherboard Layout and Routing Guidelines
2.6 Validation
2.5.1 Crosstalk and the Multi-Bit Adjustment Factor
2.6.1 Flight Time Measurement
Motherboard Layout and Routing Guidelines
Motherboard Layout and Routing Guidelines
2.6.2 Signal Quality Measurement
Edge
Guideline @ Processor Edge
The terms used in the equations are described in Table
2.7 Timing Analysis
Motherboard Layout and Routing Guidelines
Table 2-11. Recommended 100 MHz System Flight Time Specs
Table 2-10. Recommended 100 MHz System Timing Parameters
Motherboard Layout and Routing Guidelines
Tflight,min
Figure 2-14. AGP Connector Layout Guidelines
2.8.1 AGP Connector “Up Option Layout Guidelines
2.8 AGP Layout and Routing Guidelines
Table 2-12. Data and Associated Strobe
2.8.2 On-board AGP Compliant Device “Down” Option Layout Guidelines
Table 2-14. Control Signal Line Length Recommendations
Table 2-13. Source Synchronous Motherboard Recommendations
Motherboard Layout and Routing Guidelines
Figure 2-15. On-board AGP Compliant Device Layout Guidelines
Table 2-16. Control Signal Line Length Recommendations
Table 2-15. Source Synchronous Motherboard Recommendations
Motherboard Layout and Routing Guidelines
2.9 82443GX Memory Subsystem Layout and Routing Guidelines
Figure 2-16. FET Switch Example
2.9.1 100 MHz 82443GX Memory Array Considerations
Motherboard Layout and Routing Guidelines
2.9.1.2 Adding Additional Decoupling Capacitor
2.9.1.1 Matching the Reference Planes
Figure 2-17. Registered SDRAM DIMM Example
Table 2-17. MDx lines Reference Planes Routing
2.9.1.3 Trace Width vs. Trace Spacing
2.9.2 Memory Layout & Routing Guidelines
Figure 2-19. 4 DIMMs Single or Double-Sided
Motherboard Layout and Routing Guidelines
Figure 2-20. Motherboard Model-Data MDxx, 4 DIMMs
Table 2-18. FET Switch DQ Route Example
82443GX
Motherboard Layout and Routing Guidelines
Figure 2-22. Motherboard Model-DQMA1,5, 4 DIMMs
Figure 2-21. Motherboard Model-DQMA0,24,67, 4 DIMMs
Figure 2-23. Motherboard Model-DQMA1,5, 4 DIMMs
Motherboard Layout and Routing Guidelines
Figure 2-25. Motherboard Model-CSA#/CSB#, 4 DIMMs
Figure 2-24. Motherboard Model-DQMB1,5, 4 DIMMs
Figure 2-26. Motherboard Model-SRASA#, 4 DIMMs
Motherboard Layout and Routing Guidelines
Table 2-20. Motherboard Model SCASA#, 4 DIMMs
Table 2-19. Motherboard Model SRASB#, 4 DIMMs
Table 2-21. Motherboard Model SCASB#, 4 DIMMs
Motherboard Layout and Routing Guidelines
Table 2-23. Motherboard Model WEB#, 4 DIMMs
Table 2-22. Motherboard Model WEA#, 4 DIMMs
Table 2-24. Motherboard Model MAA140, 4 DIMMs
Motherboard Layout and Routing Guidelines
2.9.4 PCI Bus Routing Guidelines
2.9.3 4 DIMM Routing Guidelines NO FET
Table 2-25. Motherboard Model MAB12,11,90#, MAB14,13,10, 4 DIMMs
Figure 2-27. Motherboard Model-Data MDxx Lines, 4 DIMMs No FET
Host Bridge Controller 492 BGA
2.9.5 Decoupling Guidelines Intel 440GX AGPset Platform
Figure 2-28. PCI Bus Layout Example
Figure 2-29. 82443GX Decoupling
2.9.6.1 Clock Routing Spacing
2.9.6 Intel 440GX AGPset Clock Layout Recommendations
2.9.6.2 System Bus Clock Layout
Figure 2-30. Clock Trace Spacing Guidelines
Motherboard Layout and Routing Guidelines
2.9.6.3 PCI Clock Layout
2.9.6.4 SDRAM Clock Layout
Motherboard Layout and Routing Guidelines
2.9.6.5 AGP Clock Layout
Figure 2-31. AGP Clock Layout
Design Checklist
Page
Design Checklist
Design Checklist
3.1 Overview
3.2 Pull-up and Pull-down Resistor Values
3.3.1 Intel Pentium II Processor
3.3 Intel Pentium II Processor Checklist
Figure 3-1. Pull-up Resistor Example
Table 3-1. Slot Connectivity Sheet 1 of
Intel440GX AGPset Design Guide
Table 3-1. Slot Connectivity Sheet 2 of
Design Checklist
Table 3-1. Slot Connectivity Sheet 3 of
Table 3-2. GND & Power Pin Definition
Design Checklist
Intel440GX AGPset Design Guide
Design Checklist
3.3.3 Intel Pentium II Processor Signals
3.3.2 Intel Pentium II Processor Clocks
DBRESET ITP Reset signal requires a 240 ohm pull-up to VCC3
Design Checklist
3.3.5 Dual-Processor DP Slot 1 Checklist
3.3.4 Uni-Processor UP Slot 1 Checklist
3.3.6 Slot 1 Decoupling Capacitors
3.3.7 Voltage Regulator Module, VRM
3.4.1 CK100 - 100 MHz Clock Synthesizer
3.4 Intel 440GX AGPset Clocks
Table 3-3. Processor Frequency Select
Design Checklist
3.4.3 GCKE and DCLKWR Connection
3.4.2 CKBF - SDRAM 1 to 18 Clock Buffer
Figure 3-2. GCKE & DCLKWR Connections
Design Checklist
3.5.1 82443GX Interface
3.5 82443GX Host Bridge
Table 3-4. 82443GX Connectivity Sheet 1 of
Design Checklist
Design Checklist
Table 3-4. 82443GX Connectivity Sheet 2 of
Intel440GX AGPset Design Guide
3-11
3.5.3 82443GX PCI Interface
3.5.2 82443GX GTL+ Bus Interface
Table 3-4. 82443GX Connectivity Sheet 3 of
Design Checklist
Design Checklist
3.5.4 82443GX AGP Interface
Table 3-5. Strapping Options
3.6.1 SDRAM Connections
3.6 Intel 440GX AGPset Memory Interface
Table 3-6. SDRAM Connectivity
Design Checklist
Figure 3-3. Current Solution With Existing FET Switches
3.6.2 DIMM Solution With FET Switches
3.6.3 Registered SDRAM
Design Checklist
3.7.1 PIIX4E Connections
3.7 82371EB PIIX4E
Table 3-7. PIIX4E Connectivity Sheet 1 of
Design Checklist
Design Checklist
Table 3-7. PIIX4E Connectivity Sheet 2 of
Intel440GX AGPset Design Guide
3-17
Design Checklist
Table 3-7. PIIX4E Connectivity Sheet 3 of
Intel440GX AGPset Design Guide
3-18
Design Checklist
Table 3-7. PIIX4E Connectivity Sheet 4 of
Intel440GX AGPset Design Guide
3-19
3.7.2.1 Cabling
3.7.2 IDE Routing Guidelines
3.7.2.2 Motherboard
Table 3-8. IDE Series Termination
Design Checklist
Figure 3-4. Series Resistor Placement for Primary IDE Connectors
PIIX4E
3.7.3 PIIX4E Power And Ground Pins
3.8 PCI Bus Signals
Table 3-9. PIIX4E PWR & GND
Design Checklist
3.10 ISA and X-Bus Signals
ISA Signals
Table 3-10. Non-PIIX4E PCI Signals
Table 3-11. Non-PIIX4E ISA Signals
3.12 IDE Interface
3.11 USB Interface
Table 3-12. Non-PIIX4E IDE
Design Checklist
3.13.1 Dual-Footprint Flash Design
3.13 Flash Design
3.13.2 Flash Design Considerations
Figure 3-5. Dual Footprint Flash Layouts
1Mbit/2Mbit
XD70
Flash
Figure 3-6. nterfacing Intel’s Flash with PIIX4E in Desktop
Write Protection
Table 3-13. Flash Vpp Recommendations
Design Checklist
3.15 Power Management Signals
3.14 System and Test Signals
Figure 3-7. Interfacing Intel’s Flash with PIIX4E in Desktop
Design Checklist
A S L O T O C C B S L O T O C C4.7K V R M 1 P W R G D
Simplified P W R G O O D a n d P W R O K generation logic VCC3
V R M 2 P W R G D I T P R E S E T A T X P S P O K
Note The polarities have been altered to simplify drawing
Design Checklist
3.15.1 Power Button Implementation
Design Checklist
3.16 Miscellaneous
Design Checklist
3.17 82093AA IOAPIC
3.18 Manageability Devices
3.18.1 Max1617 Temperature Sensor
3.18.2 LM79 Microprocessor System Hardware Monitor
Design Checklist
Design Checklist
3.18.3 82558B LOM Checklist
3.19.1 USB and Multi-processor BIOS
3.19 Software/BIOS
3.18.4 Wake On LAN WOL Header
Design Checklist
3.21 Mechanicals
3.20 Thermals / Cooling Solutions
3.19.2 Design Considerations
3.20.1 Design Considerations
3.21.1 Design Considerations
3.22 Electricals
3.22.1 Design Considerations
Design Checklist
3.24 Applications and Add-in Hardware
3.23 Layout Checklist
3.23.1 Routing and Board Fabrication
3.23.2 Design Consideration
Debug Recommendations
Page
4.1 Slot 1 Test Tools
Debug Recommendations
4.2 Debug/Simulation Tools
4.2.1 Logic Analyzer Interface LAI
4.3.1 Intel Pentium II Processor LAI Issue
4.3 Debug Features
4.2.3 Bus Functional Model BFM
4.2.4 I/O Buffer Models
Debug Recommendations
Figure 4-1. LAI Probe Input Circuit
Debug Recommendations
4.3.2 Debug Logic Recommendations
4.3.3 Debug Layout
4.3.4 Debug Procedures
4.3.2.1 Debug Considerations
4.3.3.1 Design Considerations
DM = 0, D3-D0 = 1111 all including self shorthand
Debug Recommendations
Third Party Vendors
Page
Third-Party Vendor Information
Table 5-1. Slot 1 Connector
Processors
Third-Party Vendor Information
5.1.2 Voltage Regulator Control Silicon
5.1.1 Voltage Regulator Modules
Table 5-4. Voltage Regulator Modules
Table 5-5. Voltage Regulator Control Silicon Vendors
5.2.3 FET Switches4 DIMM/FET Design
5.2.2 Power Management Components
Table 5-7. Power Management Component Vendors
Table 5-8. FET Switch Vendors
5.3 Other Processor Components
5.3.1 Slot 1 Connector
5.3.2 Mechanical Support
5.3.3 Heat sinks
Reference Design Schematics
Page
Design
Intel 440GX AGPset Platform Reference
Intel440GX AGPset Platform Reference Design
4 and
The GCKE shift register circuit is also shown
Intel440GX AGPset Platform Reference Design
Ultra I/O Component
Intel440GX AGPset Platform Reference Design
Intel440GX AGPset Platform Reference Design
Power Connectors Front Panel Jumpers
Pull-up and Pull-down Resistors
34-35
