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AMD 8 manual Processor Warm Reset Requirements, Preliminary Information, Clock Multiplier

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Clock Multiplier

Preliminary Information

AMD Athlon™ XP Processor Model 8 Data Sheet

25175H— March 2003

Clock Multiplier	The chipset samples the FID[3:0] signals in a chipset-specific
Selection (FID[3:0])	manner from the processor and uses this information to
	determine the correct serial initialization packet (SIP). The
	chipset then sends the SIP information to the processor for
	configuration of the AMD Athlon system bus for the clock
	multiplier that determines the processor frequency indicated
	by the FID[3:0] code. The SIP is sent to the processor using the
	SIP protocol. This protocol uses the PROCRDY, CONNECT, and
	CLKFWDRST signals, that are synchronous to SYSCLK.
	For more information about FID[3:0], see “FID[3:0] Pins” on
	page 75.
	Serial Initialization Packet (SIP) Protocol. Refer to A M D A t h l o n ™
	System Bus Specification, order# 21902 for details of the SIP
	protocol.

9.2Processor Warm Reset Requirements

Northbridge Reset RESET# cannot be asserted to the processor without also being

Pinsasserted to the Northbridge. RESET# to the Northbridge is the same as PCI RESET#. The minimum assertion for PCI RESET# is one millisecond. Southbridges enforce a minimum assertion of RESET# for the processor, Northbridge, and PCI of 1.5 to 2.0 milliseconds.

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Signal and Power-Up Requirements

Chapter 9

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AMD manual Processor Warm Reset Requirements, Preliminary Information, AMD Athlon XP Processor Model 8 Data Sheet

Contents

Preliminary Information AMD AthlonTM XP Processor Model Data SheetPublication # 25175 Rev. H Issue Date March Preliminary Information 2001-2003 Advanced Micro Devices, Inc. All rights reservedTrademarks Contents 2 Interface Signals3 Logic Symbol Diagram 4 Power Management Processor Model 8 SpecificationsAMD Athlon XP Processor Model 8 Data Sheet 9 Signal and Power-Up Requirements8 Electrical Data 10 Mechanical Data12 Ordering Information Appendix B Conventions and AbbreviationsTable of Contents Preliminary InformationAMD Athlon XP Processor Model 8 Data Sheet Preliminary Information25175H- March List of Figures List of FiguresPreliminary Information AMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationList of Figures 25175H- MarchList of Tables List of TablesPreliminary Information AMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationList of Tables Revision History Revision HistoryPreliminary Information AMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationRevision History 1 Overview ChapterOverview Preliminary Information1.1 QuantiSpeed Architecture Summary AMD Athlon XP Processor Model 8 Data SheetPreliminary Information OverviewPreliminary Information ChapterOverview AMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationOverview Chapter2 Interface Signals 2.2 Signaling TechnologyInterface Signals 2.1 Overview2.4 AMD Athlon System Bus Signals 2.3 Push-Pull PP DriversAMD Athlon XP Processor Model 8 Data Sheet Interface Signals3 Logic Symbol Diagram Data Probe/SysCMD Request Power Management and InitializationFigure 2. Logic Symbol Diagram Logic Symbol DiagramAMD Athlon XP Processor Model 8 Data Sheet Logic Symbol DiagramPreliminary Information Chapter4 Power Management 4.1 Power Management StatesPower Management Preliminary InformationAMD Athlon System Bus Specification, order# Note In all power management states that the processor ispowered, the system must not stop the system clock SYSCLK/SYSCLK# to the processorPower Management Preliminary InformationThere are two mechanisms for asserting STPCLK#-hardware and software ChapterConnect and Disconnect Protocol AMD Athlon XP Processor Model 8 Data SheetPower Management Preliminary InformationThe Northbridge contains BIOS programmable registers to enable the system bus disconnect in response to Halt and Stop Grant special cycles. When the Northbridge receives the Halt or Stop Grant special cycle from the processor and, if there are no outstanding probes or data movements, the Northbridge deasserts CONNECT a minimum of eight SYSCLK periods after the last command sent to the processor. The processor detects the deassertion of CONNECT on a rising edge of SYSCLK and deasserts PROCRDY to the Northbridge. In return, the Northbridge asserts CLKFWDRST in anticipation of reestablishing a connection at some later point Power ManagementPreliminary Information ChapterAMD Athlon XP Processor Model 8 Data Sheet Power ManagementPreliminary Information 4. The processor responds to the Northbridge by deasserting PROCRDYPower Management Preliminary Information3. The Northbridge asserts CONNECT ChapterFigure 6. Northbridge Connect State Diagram 7/D,CAMD Athlon XP Processor Model 8 Data Sheet Power ManagementFigure 7. Processor Connect State Diagram Connect 6/B2/B Connect Pending Disconnect4.3 Clock Control AMD Athlon XP Processor Model 8 Data SheetPower Management Preliminary Information5 CPUID Support AMD Processor Recognition Application Note, order#AMD Athlon Processor Recognition Application Note Addendum, order# CPUID SupportAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationCPUID Support ChapterPreliminary Information ChapterAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationMaximum Die Working State C0Preliminary Information ChapterSYSCLK and SYSCLK# AC Characteristics 6.2 Advanced 266 FSB AMD Athlon XP Processor ModelFigure 8. SYSCLK Waveform AMD Athlon XP Processor Model 8 Data Sheet6.3 Advanced 266 FSB AMD Athlon System Bus AC Characteristics AMD Athlon System Bus AC CharacteristicsPreliminary Information ChapterAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationChapter 25175H- MarchTable 5. Electrical and Thermal Specifications Preliminary InformationChapter 62.0 WFigure 9. SYSCLK Waveform AMD Athlon XP Processor Model 8 Data SheetFigure 9 shows a sample waveform of the SYSCLK signal Preliminary Information7.3 Advanced 333 FSB AMD Athlon System Bus AC Characteristics AMD Athlon System Bus AC CharacteristicsPreliminary Information ChapterAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationChapter 25175H- March8.2 Interface Signal Groupings 8 Electrical Data8.1 Conventions Electrical DataInterface Signal Groupings continued AMD Athlon XP Processor Model 8 Data SheetRESET#, INTR, NMI, SMI#, INIT#, A20M#, FERR, IGNNE# Preliminary Information8.5 VCCA AC and DC Characteristics 8.3 Voltage Identification VID408.4 Frequency Identification FID30 Preliminary Information8.7 VCCCORE Characteristics Table 12. VCCCORE AC and DC Characteristics8.6 Decoupling AMD Athlon XP Processor Model 8 Data SheetFigure 10. VCCCORE Voltage Waveform Preliminary InformationChapter Electrical Data8.8 Absolute Ratings Table 13. Absolute RatingsAMD Athlon XP Processor Model 8 Data Sheet Preliminary Information8.9 SYSCLK and SYSCLK# DC Characteristics Preliminary InformationChapter Electrical Data8.10 AMD Athlon System Bus DC Characteristics Table 15. AMD Athlon System Bus DC CharacteristicsAMD Athlon XP Processor Model 8 Data Sheet Preliminary Information8.11 General AC and DC Characteristics Table 16. General AC and DC CharacteristicsPreliminary Information ChapterTable 16. General AC and DC Characteristics continued AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Electrical Data8.12 Open-Drain Test Circuit 50 Ω ±3% Open-Drain Pin IOL = Output Current2Figure 12. General ATE Open-Drain Test Circuit Preliminary Information8.13 Thermal Diode Characteristics AMD Athlon XP Processor Model 8 Data SheetThermal Diode Electrical Characteristics Preliminary InformationAMD Athlon Processor-Based Motherboard Design Guide, order# AMD Thermal, Mechanical, and Chassis Cooling Design Guide, order#Preliminary Information Chapter8.14 APIC Pins AC and DC Characteristics Table 19. APIC Pin AC and DC CharacteristicsTable 18. Guidelines for Platform Thermal Protection of the Processor AMD Athlon XP Processor Model 8 Data Sheet9 Signal and Power-Up Requirements 9.1 Power-Up RequirementsSignal and Power-Up Requirements Preliminary InformationAMD Athlon XP Processor Model 8 Data Sheet 1. RESET# must be asserted before PWROK is assertedSignal and Power-Up Requirements Preliminary InformationAMD Athlon XP Processor Model 8 Data Sheet 4. PWROK assertion to deassertion of RESET#Signal and Power-Up Requirements Preliminary Information9.2 Processor Warm Reset Requirements AMD Athlon XP Processor Model 8 Data SheetSignal and Power-Up Requirements Preliminary Information10 Mechanical Data 10.1 Die LoadingMechanical Data Preliminary Information10.2 Part Number 27291 OPGA Package Dimensions for Table 21. Part Number 27291 OPGA Package Dimensions for AMD AthlonAMD Athlon XP Processors Model 8 with a CPUID of XP Processors Model 8 with a CPUID of10.3 Part Number 27291 OPGA Package Dimensions for Table 22. Part Number 27291 OPGA Package Dimensions forAMD Athlon XP Processors Model 8 with a CPUID of 1. Dimensions are given in millimetersAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationMechanical Data Chapter10.4 Part Number 27648 OPGA Package Dimensions for Table 23. Part Number 27648 OPGA Package Dimensions for1. Dimensions are given in millimeters AMD Athlon XP Processors Model 8 with a CPUID ofAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationMechanical Data Chapter11.1 Pin Diagram and Pin Name Abbreviations 11 Pin DescriptionsPin Descriptions Preliminary InformationFigure 16. AMD Athlon XP Processor Model 8 Pin Diagram-Topside View AMD Athlon XP ProcessorModel Topside ViewBottomside View Chapter Pin DescriptionsAMD Athlon XP Processor Model 8 Data Sheet ModelTable 24. Pin Name Abbreviations AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Pin DescriptionsTable 24. Pin Name Abbreviations continued Preliminary InformationChapter Pin DescriptionsAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationTable 24. Pin Name Abbreviations continued Pin DescriptionsPreliminary Information Table 24. Pin Name Abbreviations continuedChapter Pin DescriptionsAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationTable 24. Pin Name Abbreviations continued Pin DescriptionsPreliminary Information Table 24. Pin Name Abbreviations continuedChapter Pin DescriptionsAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationTable 24. Pin Name Abbreviations continued Pin Descriptions11.2 Pin List Preliminary InformationChapter Pin DescriptionsTable 25. Cross-Reference by Pin Location AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Pin DescriptionsPreliminary Information ChapterPin Descriptions SDATAINCLK3#AMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPin Descriptions SDATAINCLK1#Preliminary Information ChapterPin Descriptions AMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPin Descriptions SDATAINCLK0#Preliminary Information ChapterPin Descriptions AMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPin Descriptions Preliminary Information Table 25. Cross-Reference by Pin LocationChapter Pin DescriptionsSee the AMD Athlon System Bus Specification, order# 11.3 Detailed Pin DescriptionsAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationCircuits” chapter of the AMD Athlon Processor-Based Motherboard Design Guide, order#Preliminary Information ChapterTable 26. FID30 Clock Multiplier Encodings AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Pin DescriptionsJTAG Pins Preliminary InformationFLUSH# Pin IGNNE# PinAMD Athlon XP Processor Model 8 Data Sheet K7CLKOUT# PinsKey Pins NC Pinssee the AMD Athlon System Bus Specification, order# page 35 and the AMD Athlon Processor-Based MotherboardPreliminary Information Chapterthe AMD Athlon Processor-Based Motherboard Design Guide AMD Athlon XP Processor Model 8 Data SheetPreliminary Information AMD Athlon Processor-Based Motherboard Design Guide, order#12 Ordering Information Standard AMD Athlon XP Processor Model 8 ProductsFigure 18. OPN Example for the AMD Athlon XP Processor Model Ordering InformationAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationOrdering Information ChapterAppendix A Thermal Diode CalculationsIdeal Diode Equation Appendix A - Thermal Diode CalculationsTemperature Offset Correction AMD Athlon XP Processor Model 8 Data SheetPreliminary Information cancellation --- I-- high------ T die , spec + 273.15 ⋅ ln = T die , spec + 273.15 ⋅AMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationAppendix A - Thermal Diode Calculations 25175H- MarchSignals and Bits Appendix BConventions and Abbreviations Appendix B - Conventions and AbbreviationsData Terminology AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Abbreviations and Acronyms Table 31. AbbreviationsPreliminary Information Appendix B - Conventions and AbbreviationsTable 31. Abbreviations continued Table 32. AcronymsAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationTable 32. Acronyms continued Preliminary InformationAppendix B - Conventions and Abbreviations AMD Athlon XP Processor Model 8 Data Sheet Zero Delay BufferPreliminary Information Table 32. Acronyms continuedRelated Publications AMD Athlon Processor x86 Code Optimization Guide, order#Builders Guide for Desktop/Tower Systems, order# Preliminary InformationAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationAppendix B - Conventions and Abbreviations 25175H- March