Intel 440GX AGPset
Design Guide
 Intel440GX AGPset Design Guide
 Contents
 Dimm Solution With FET Switches
System Bus Clock Layout 6.3
6.4
6.5
 PIIX4E Power And Ground Pins
ISA and X-Bus Signals
Thermals / Cooling Solutions 20.1
82371EB PIIX4E
 IntelPentiumII Processor LAI Issue
FET Switches4 DIMM/FET Design
Voltage 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 processor
Solution 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 AGPset
Intel 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 Interface
Accelerated Graphics Port Interface
 Wired for Management Initiative
PCI-to-ISA/IDE Xcelerator PIIX4E
PCI Interface
System Clocking
 Remote Service Boot
Instrumentation
 Power Management
Design Recommendations
Voltage 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 Recommendations
Single Processor Design
Single Processor Network Topology and Conditions
 Recommended Trace Lengths for Single Processor Design
Single Processor Recommended Trace Lengths
Trace Minimum Length Maximum Length
 Dual Processor Systems
Single Processor Systems-Single-End Termination SET
Dual Processor Network Topology and Conditions
Dual Processor Recommended Trace Lengths
 SET Trace Length Requirements
SET Trace Length Requirements
 Minimizing Crosstalk
Additional Guidelines
Practical Considerations
 Design Methodology
 Performance Requirements
12. GTL+ Design Process
 Topology Definition
Pre-Layout Simulation Sensitivity Analysis
Simulation Methodology
Recommended 100 MHz System Flight Time Specs
 Placement & Layout
Post-Layout Simulation
 Validation
Crosstalk and the Multi-Bit Adjustment Factor
Flight 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 Specs
Timing Term Intel Pentium II Processor Intel 440GX AGPset
Timing Term Value
 AGP Connector Up Option Layout Guidelines
Connector
AGP Layout and Routing Guidelines
12. Data and Associated Strobe
 14. Control Signal Line Length Recommendations
On-board AGP Compliant Device Down Option Layout Guidelines
13. Source Synchronous Motherboard Recommendations
WidthSpace Trace Line Length Line Length Matching
 Compliant 82443GX Graphics Data Routing Device
16. Control Signal Line Length Recommendations
15. Source Synchronous Motherboard Recommendations
 1 100 MHz 82443GX Memory Array Considerations
82443GX Memory Subsystem Layout and Routing Guidelines
To 82443GX MDs & MECCs To DIMM10 DQs To DIMM32 DQs
 Matching the Reference Planes
Adding Additional Decoupling Capacitor
Register
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 DIMMs
21. Motherboard Model SCASB#, 4 DIMMs
 23. Motherboard Model WEB#, 4 DIMMs
22. Motherboard Model WEA#, 4 DIMMs
24. Motherboard Model MAA140, 4 DIMMs
 3 4 Dimm Routing Guidelines no FET
PCI Bus Routing Guidelines
25. 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 Spacing
System Bus Clock Layout
014 018 Clock
 PCI Clock Layout
Sdram Clock Layout
Net 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 Checklist
Processor Pin Pin Connection
 Slot Connectivity Sheet 2
 Slot Connectivity Sheet 3
GND & Power Pin Definition
Vtt 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 Checklist
Slot 1 Decoupling Capacitors
Voltage Regulator Module, VRM
 Intel 440GX AGPset Clocks
1 CK100 100 MHz Clock Synthesizer
Processor Frequency Select
SEL100/66#
 Ckbf Sdram 1 to 18 Clock Buffer
Gcke and Dclkwr Connection
 1 82443GX Interface
82443GX Host Bridge
GX Connectivity Sheet 1
 GX Connectivity Sheet 2
 2 82443GX GTL+ Bus Interface
3 82443GX PCI Interface
GX 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 Interface
Sdram Connections
Sdram Connectivity
 Dimm Solution With FET Switches
Registered Sdram
 Signal Names Connection
82371EB PIIX4E
PIIX4E Connections
PIIX4E Connectivity Sheet 1
 PIIX4E Connectivity Sheet 2
 PIIX4E Connectivity Sheet 3
 PIIX4E Connectivity Sheet 4
 Signal Resistor
IDE Routing Guidelines
Cabling
Motherboard
 Reset#
PDD150 PDA20
Pin32,34
IDE
 PIIX4E Power And Ground Pins
PCI Bus Signals
PIIX4E PWR & GND
 ISA Signals
ISA and X-Bus Signals
10. Non-PIIX4E PCI Signals
11. Non-PIIX4E ISA Signals
 IDE Interface
USB Interface
12. Non-PIIX4E IDE
 Flash Design
Dual-Footprint Flash Design
Flash 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 Sensor
18.2 LM79 Microprocessor System Hardware Monitor
 Pin Number Pin Name Resistor Value Comment
18.3 82558B LOM Checklist
Required in both a and B stepping designs
 USB and Multi-processor Bios
Software/BIOS
Wake On LAN WOL Header
 Mechanicals
Thermals / Cooling Solutions
Design Considerations
 Electricals
 Layout Checklist
Applications and Add-in Hardware
Routing and Board Fabrication
Design Consideration
 Debug Recommendations
Page
 Slot 1 Test Tools
Debug/Simulation Tools
Logic Analyzer Interface LAI
In-Target Probe ITP
 Debug Features
Intel Pentium II Processor LAI Issue
Bus Functional Model BFM
4 I/O Buffer Models
 150 330 ohm
Kohm
430 ohm
150 ohm
 A20M# 150 330 ohm
Debug Logic Recommendations
PICD0# 150 ohm PICD1#
 Debug Procedures
Debug Layout
Debug Considerations
Design Considerations
 Debug Recommendations
 Third Party Vendors
Page
 Slot 1 Connector
Processors
GTL+ Bus Slot 1 Terminator Cards
Supplier Contact Phone
 Voltage Regulator Modules
Voltage Regulator Control Silicon
Voltage Regulator Modules
Voltage Regulator Control Silicon Vendors
 Power Management Components
FET Switches4 DIMM/FET Design
Intel 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