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AMD 8 manual Circuits” chapter of the AMD Athlon Processor-Based, Motherboard Design Guide, order#

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Page 87

Circuits” chapter of the AMD Athlon™ Processor-Based

Preliminary Information

25175H —March 2003

AMD Athlon™ XP Processor Model 8 Data Sheet

CONNECT Pin	CONNECT is an input from the system used for power
	management and clock-forward initialization at reset.
COREFB and	COREFB and COREFB# are outputs to the system that provide
COREFB# Pins	processor core voltage feedback to the system.
CPU_PRESENCE# Pin	CPU_PRESENCE# is connected to VSS on the processor
	package. If pulled-up on the motherboard, CPU_PRESENCE#
	may be used to detect the presence or absence of a processor in
	the Socket A-style socket.
DBRDY and DBREQ#	DBRDY and DBREQ# are routed to the debug connector.
Pins	DBREQ# is tied to VCC_CORE with a pullup resistor.
FERR Pin	FERR is an output to the system that is asserted for any
	unmasked numerical exception independent of the NE bit in
	CR0. FERR is a push-pull active High signal that must be
	inverted and level shifted to an active Low signal. For more
	information about FERR and FERR#, see the “Required
	Circuits” chapter of the AMD Athlon™ Processor-Based
	Motherboard Design Guide, order# 24363.
FID[3:0] Pins	FID[3] (Y3), FID[2] (Y1), FID[1] (W3), and FID[0] (W1) are the
	4-bit processor clock-to-SYSCLK ratio.
	Table 26 on page 76 shows the encodings of the clock
	multipliers on FID[3:0].

Chapter 11

Pin Descriptions

75

Image 87

AMD 8 manual Circuits” chapter of the AMD Athlon Processor-Based, Motherboard Design Guide, order#, Preliminary Information

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 Processor Model 8 Specifications Contents2 Interface Signals 3 Logic Symbol Diagram 4 Power Management10 Mechanical Data AMD Athlon XP Processor Model 8 Data Sheet9 Signal and Power-Up Requirements 8 Electrical DataPreliminary Information 12 Ordering InformationAppendix B Conventions and Abbreviations Table of ContentsAMD Athlon XP Processor Model 8 Data Sheet Preliminary Information25175H- March List of Figures List of FiguresPreliminary Information 25175H- March AMD Athlon XP Processor Model 8 Data SheetPreliminary Information List of FiguresList 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 Preliminary Information 1 OverviewChapter OverviewOverview 1.1 QuantiSpeed Architecture SummaryAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPreliminary Information ChapterOverview Chapter AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Overview2.1 Overview 2 Interface Signals2.2 Signaling Technology Interface SignalsInterface Signals 2.4 AMD Athlon System Bus Signals2.3 Push-Pull PP Drivers AMD Athlon XP Processor Model 8 Data SheetLogic Symbol Diagram 3 Logic Symbol DiagramData Probe/SysCMD Request Power Management and Initialization Figure 2. Logic Symbol DiagramChapter AMD Athlon XP Processor Model 8 Data SheetLogic Symbol Diagram Preliminary InformationPreliminary Information 4 Power Management4.1 Power Management States Power ManagementSYSCLK/SYSCLK# to the processor AMD Athlon System Bus Specification, order#Note In all power management states that the processor is powered, the system must not stop the system clockChapter Power ManagementPreliminary Information There are two mechanisms for asserting STPCLK#-hardware and softwarePreliminary Information Connect and Disconnect ProtocolAMD Athlon XP Processor Model 8 Data Sheet Power ManagementChapter The 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 pointPower Management Preliminary Information4. The processor responds to the Northbridge by deasserting PROCRDY AMD Athlon XP Processor Model 8 Data SheetPower Management Preliminary InformationChapter Power ManagementPreliminary Information 3. The Northbridge asserts CONNECTPower Management Figure 6. Northbridge Connect State Diagram7/D,C AMD Athlon XP Processor Model 8 Data SheetDisconnect Figure 7. Processor Connect State DiagramConnect 6/B 2/B Connect PendingPreliminary Information 4.3 Clock ControlAMD Athlon XP Processor Model 8 Data Sheet Power ManagementCPUID Support 5 CPUID SupportAMD Processor Recognition Application Note, order# AMD Athlon Processor Recognition Application Note Addendum, order#Chapter AMD Athlon XP Processor Model 8 Data SheetPreliminary Information CPUID SupportChapter Preliminary InformationWorking State C0 AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Maximum DieChapter Preliminary InformationAMD Athlon XP Processor Model 8 Data Sheet SYSCLK and SYSCLK# AC Characteristics6.2 Advanced 266 FSB AMD Athlon XP Processor Model Figure 8. SYSCLK WaveformChapter 6.3 Advanced 266 FSB AMD Athlon System Bus AC CharacteristicsAMD Athlon System Bus AC Characteristics Preliminary Information25175H- March AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Chapter62.0 W Table 5. Electrical and Thermal SpecificationsPreliminary Information ChapterPreliminary Information Figure 9. SYSCLK WaveformAMD Athlon XP Processor Model 8 Data Sheet Figure 9 shows a sample waveform of the SYSCLK signalChapter 7.3 Advanced 333 FSB AMD Athlon System Bus AC CharacteristicsAMD Athlon System Bus AC Characteristics Preliminary Information25175H- March AMD Athlon XP Processor Model 8 Data SheetPreliminary Information ChapterElectrical Data 8.2 Interface Signal Groupings8 Electrical Data 8.1 ConventionsPreliminary Information Interface Signal Groupings continuedAMD Athlon XP Processor Model 8 Data Sheet RESET#, INTR, NMI, SMI#, INIT#, A20M#, FERR, IGNNE#Preliminary Information 8.5 VCCA AC and DC Characteristics8.3 Voltage Identification VID40 8.4 Frequency Identification FID30AMD Athlon XP Processor Model 8 Data Sheet 8.7 VCCCORE CharacteristicsTable 12. VCCCORE AC and DC Characteristics 8.6 DecouplingElectrical Data Figure 10. VCCCORE Voltage WaveformPreliminary Information ChapterPreliminary Information 8.8 Absolute RatingsTable 13. Absolute Ratings AMD Athlon XP Processor Model 8 Data SheetElectrical Data 8.9 SYSCLK and SYSCLK# DC CharacteristicsPreliminary Information ChapterPreliminary Information 8.10 AMD Athlon System Bus DC CharacteristicsTable 15. AMD Athlon System Bus DC Characteristics AMD Athlon XP Processor Model 8 Data SheetChapter 8.11 General AC and DC CharacteristicsTable 16. General AC and DC Characteristics Preliminary InformationElectrical Data Table 16. General AC and DC Characteristics continuedAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPreliminary Information 8.12 Open-Drain Test Circuit50 Ω ±3% Open-Drain Pin IOL = Output Current2 Figure 12. General ATE Open-Drain Test CircuitPreliminary Information 8.13 Thermal Diode CharacteristicsAMD Athlon XP Processor Model 8 Data Sheet Thermal Diode Electrical CharacteristicsChapter AMD Athlon Processor-Based Motherboard Design Guide, order#AMD Thermal, Mechanical, and Chassis Cooling Design Guide, order# Preliminary InformationAMD Athlon XP Processor Model 8 Data Sheet 8.14 APIC Pins AC and DC CharacteristicsTable 19. APIC Pin AC and DC Characteristics Table 18. Guidelines for Platform Thermal Protection of the ProcessorPreliminary Information 9 Signal and Power-Up Requirements9.1 Power-Up Requirements Signal and Power-Up RequirementsPreliminary Information AMD Athlon XP Processor Model 8 Data Sheet1. RESET# must be asserted before PWROK is asserted Signal and Power-Up RequirementsPreliminary Information AMD Athlon XP Processor Model 8 Data Sheet4. PWROK assertion to deassertion of RESET# Signal and Power-Up RequirementsPreliminary Information 9.2 Processor Warm Reset RequirementsAMD Athlon XP Processor Model 8 Data Sheet Signal and Power-Up RequirementsPreliminary Information 10 Mechanical Data10.1 Die Loading Mechanical DataXP Processors Model 8 with a CPUID of 10.2 Part Number 27291 OPGA Package Dimensions forTable 21. Part Number 27291 OPGA Package Dimensions for AMD Athlon AMD Athlon XP Processors Model 8 with a CPUID of1. Dimensions are given in millimeters 10.3 Part Number 27291 OPGA Package Dimensions forTable 22. Part Number 27291 OPGA Package Dimensions for AMD Athlon XP Processors Model 8 with a CPUID ofChapter AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Mechanical DataAMD Athlon XP Processors Model 8 with a CPUID of 10.4 Part Number 27648 OPGA Package Dimensions forTable 23. Part Number 27648 OPGA Package Dimensions for 1. Dimensions are given in millimetersChapter AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Mechanical DataPreliminary Information 11.1 Pin Diagram and Pin Name Abbreviations11 Pin Descriptions Pin DescriptionsTopside View Figure 16. AMD Athlon XP Processor Model 8 Pin Diagram-Topside ViewAMD Athlon XP Processor ModelModel Bottomside ViewChapter Pin Descriptions AMD Athlon XP Processor Model 8 Data SheetPin Descriptions Table 24. Pin Name AbbreviationsAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPin Descriptions Table 24. Pin Name Abbreviations continuedPreliminary Information ChapterPin Descriptions AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Table 24. Pin Name Abbreviations continuedPin Descriptions Preliminary InformationTable 24. Pin Name Abbreviations continued ChapterPin Descriptions AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Table 24. Pin Name Abbreviations continuedPin Descriptions Preliminary InformationTable 24. Pin Name Abbreviations continued ChapterPin Descriptions AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Table 24. Pin Name Abbreviations continuedPin Descriptions 11.2 Pin ListPreliminary Information ChapterPin Descriptions Table 25. Cross-Reference by Pin LocationAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationSDATAINCLK3# Preliminary InformationChapter Pin DescriptionsSDATAINCLK1# AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Pin DescriptionsPreliminary Information ChapterPin Descriptions SDATAINCLK0# AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Pin DescriptionsPreliminary Information ChapterPin Descriptions AMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPin Descriptions Pin Descriptions Preliminary InformationTable 25. Cross-Reference by Pin Location ChapterPreliminary Information See the AMD Athlon System Bus Specification, order#11.3 Detailed Pin Descriptions AMD Athlon XP Processor Model 8 Data SheetChapter Circuits” chapter of the AMD Athlon Processor-BasedMotherboard Design Guide, order# Preliminary InformationPin Descriptions Table 26. FID30 Clock Multiplier EncodingsAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationIGNNE# Pin JTAG PinsPreliminary Information FLUSH# PinNC Pins AMD Athlon XP Processor Model 8 Data SheetK7CLKOUT# Pins Key PinsChapter see the AMD Athlon System Bus Specification, order#page 35 and the AMD Athlon Processor-Based Motherboard Preliminary InformationAMD Athlon Processor-Based Motherboard Design Guide, order# the AMD Athlon Processor-Based Motherboard Design GuideAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationOrdering Information 12 Ordering InformationStandard AMD Athlon XP Processor Model 8 Products Figure 18. OPN Example for the AMD Athlon XP Processor ModelChapter AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Ordering InformationAppendix A - Thermal Diode Calculations Appendix AThermal Diode Calculations Ideal Diode EquationTemperature Offset Correction AMD Athlon XP Processor Model 8 Data SheetPreliminary Information = T die , spec + 273.15 ⋅ cancellation--- I-- high------  T die , spec + 273.15 ⋅ ln25175H- March AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Appendix A - Thermal Diode CalculationsAppendix B - Conventions and Abbreviations Signals and BitsAppendix B Conventions and AbbreviationsData Terminology AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Appendix B - Conventions and Abbreviations Abbreviations and AcronymsTable 31. Abbreviations Preliminary InformationPreliminary Information Table 31. Abbreviations continuedTable 32. Acronyms AMD Athlon XP Processor Model 8 Data SheetTable 32. Acronyms continued Preliminary InformationAppendix B - Conventions and Abbreviations Table 32. Acronyms continued AMD Athlon XP Processor Model 8 Data SheetZero Delay Buffer Preliminary InformationPreliminary Information Related PublicationsAMD Athlon Processor x86 Code Optimization Guide, order# Builders Guide for Desktop/Tower Systems, order#25175H- March AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Appendix B - Conventions and Abbreviations