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AMD 8 manual Thermal Diode Characteristics, Preliminary Information, Electrical Data

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8.13Thermal Diode Characteristics

Preliminary Information

AMD Athlon™ XP Processor Model 8 Data Sheet

25175H— March 2003

8.13Thermal Diode Characteristics

Thermal Diode

Electrical

Characteristics

The AMD Athlon XP processor model 8 provides a diode that can be used in conjunction with an external temperature sensor to determine the die temperature of the processor. The diode anode (THERMDA) and cathode (THERMDC) are available as pins on the processor, as described in “THERMDA and THERMDC Pins” on page 78.

For information about thermal design for the AMD Athlon XP processor model 8, including layout and airflow considerations, see the AMD Processor Thermal, Mechanical, and Chassis Cooling Design Guide, order# 23794, and the cooling guidelines on http://www.amd.com.

Table 17 shows the AMD Athlon XP processor model 8 characteristics of the on-die thermal diode. For information about calculations for the ideal diode equation and temperature offset correction, see Appendix A, "Thermal Diode Calculations," on page 77.

Table 17. Thermal Diode Electrical Characteristics

	Symbol		Parameter	Min	Nom	Max	Units	Notes
	Symbol		Description	Min	Nom	Max	Units	Notes
			Description

		I	Sourcing current	5		300	µA	1

	n	f, lumped	Lumped ideality	1.00000	1.00374	1.00900		2, 3, 4
	n		factor	1.00000	1.00374	1.00900		2, 3, 4
			factor

	nf, actual		Actual ideality factor		1.00261			3, 4
		RT	Series Resistance		0.93		Ω	3, 4

Notes:

1. The sourcing current should always be used in forward bias only.

2. Characterized at 95°C with a forward bias current pair of 10 ∝A and 100 ∝A. AMD recommends using a minimum of two sourcing currents to accurately measure the temperature of the thermal diode.

3. Not 100% tested. Specified by design and limited characterization.

4. The lumped ideality factor adds the effect of the series resistance term to the actual ideality factor. The series resistance term indicates the resistance from the pins of the processor to the on-die thermal diode. The value of the lumped ideality factor depends on the sourcing current pair used.

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Electrical Data

Chapter 8

Image 54

AMD Thermal Diode Characteristics, Preliminary Information, AMD Athlon XP Processor Model 8 Data Sheet, Electrical Data

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 3 Logic Symbol Diagram 4 Power Management Contents2 Interface Signals Processor Model 8 Specifications8 Electrical Data AMD Athlon XP Processor Model 8 Data Sheet9 Signal and Power-Up Requirements 10 Mechanical DataTable of Contents 12 Ordering InformationAppendix B Conventions and Abbreviations Preliminary InformationAMD Athlon XP Processor Model 8 Data Sheet Preliminary Information25175H- March List of Figures List of FiguresPreliminary Information List of Figures AMD Athlon XP Processor Model 8 Data SheetPreliminary Information 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 Overview 1 OverviewChapter Preliminary InformationPreliminary Information 1.1 QuantiSpeed Architecture SummaryAMD Athlon XP Processor Model 8 Data Sheet OverviewPreliminary Information ChapterOverview Overview AMD Athlon XP Processor Model 8 Data SheetPreliminary Information ChapterInterface Signals 2 Interface Signals2.2 Signaling Technology 2.1 OverviewAMD Athlon XP Processor Model 8 Data Sheet 2.4 AMD Athlon System Bus Signals2.3 Push-Pull PP Drivers Interface SignalsFigure 2. Logic Symbol Diagram 3 Logic Symbol DiagramData Probe/SysCMD Request Power Management and Initialization Logic Symbol DiagramPreliminary Information AMD Athlon XP Processor Model 8 Data SheetLogic Symbol Diagram ChapterPower Management 4 Power Management4.1 Power Management States Preliminary Informationpowered, the system must not stop the system clock AMD Athlon System Bus Specification, order#Note In all power management states that the processor is SYSCLK/SYSCLK# to the processorThere are two mechanisms for asserting STPCLK#-hardware and software Power ManagementPreliminary Information ChapterPower Management Connect and Disconnect ProtocolAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPreliminary Information 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 ChapterPreliminary Information AMD Athlon XP Processor Model 8 Data SheetPower Management 4. The processor responds to the Northbridge by deasserting PROCRDY3. The Northbridge asserts CONNECT Power ManagementPreliminary Information ChapterAMD Athlon XP Processor Model 8 Data Sheet Figure 6. Northbridge Connect State Diagram7/D,C Power Management2/B Connect Pending Figure 7. Processor Connect State DiagramConnect 6/B DisconnectPower Management 4.3 Clock ControlAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationAMD Athlon Processor Recognition Application Note Addendum, order# 5 CPUID SupportAMD Processor Recognition Application Note, order# CPUID SupportCPUID Support AMD Athlon XP Processor Model 8 Data SheetPreliminary Information ChapterPreliminary Information ChapterMaximum Die AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Working State C0Preliminary Information ChapterFigure 8. SYSCLK Waveform SYSCLK and SYSCLK# AC Characteristics6.2 Advanced 266 FSB AMD Athlon XP Processor Model AMD Athlon XP Processor Model 8 Data SheetPreliminary Information 6.3 Advanced 266 FSB AMD Athlon System Bus AC CharacteristicsAMD Athlon System Bus AC Characteristics ChapterChapter AMD Athlon XP Processor Model 8 Data SheetPreliminary Information 25175H- MarchChapter Table 5. Electrical and Thermal SpecificationsPreliminary Information 62.0 WFigure 9 shows a sample waveform of the SYSCLK signal Figure 9. SYSCLK WaveformAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPreliminary Information 7.3 Advanced 333 FSB AMD Athlon System Bus AC CharacteristicsAMD Athlon System Bus AC Characteristics ChapterChapter AMD Athlon XP Processor Model 8 Data SheetPreliminary Information 25175H- March8.1 Conventions 8.2 Interface Signal Groupings8 Electrical Data Electrical DataRESET#, INTR, NMI, SMI#, INIT#, A20M#, FERR, IGNNE# Interface Signal Groupings continuedAMD Athlon XP Processor Model 8 Data Sheet Preliminary Information8.4 Frequency Identification FID30 8.5 VCCA AC and DC Characteristics8.3 Voltage Identification VID40 Preliminary Information8.6 Decoupling 8.7 VCCCORE CharacteristicsTable 12. VCCCORE AC and DC Characteristics AMD Athlon XP Processor Model 8 Data SheetChapter Figure 10. VCCCORE Voltage WaveformPreliminary Information Electrical DataAMD Athlon XP Processor Model 8 Data Sheet 8.8 Absolute RatingsTable 13. Absolute Ratings Preliminary InformationChapter 8.9 SYSCLK and SYSCLK# DC CharacteristicsPreliminary Information Electrical DataAMD Athlon XP Processor Model 8 Data Sheet 8.10 AMD Athlon System Bus DC CharacteristicsTable 15. AMD Athlon System Bus DC Characteristics Preliminary InformationPreliminary Information 8.11 General AC and DC CharacteristicsTable 16. General AC and DC Characteristics ChapterPreliminary Information Table 16. General AC and DC Characteristics continuedAMD Athlon XP Processor Model 8 Data Sheet Electrical DataFigure 12. General ATE Open-Drain Test Circuit 8.12 Open-Drain Test Circuit50 Ω ±3% Open-Drain Pin IOL = Output Current2 Preliminary InformationThermal Diode Electrical Characteristics 8.13 Thermal Diode CharacteristicsAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPreliminary Information AMD Athlon Processor-Based Motherboard Design Guide, order#AMD Thermal, Mechanical, and Chassis Cooling Design Guide, order# ChapterTable 18. Guidelines for Platform Thermal Protection of the Processor 8.14 APIC Pins AC and DC CharacteristicsTable 19. APIC Pin AC and DC Characteristics AMD Athlon XP Processor Model 8 Data SheetSignal and Power-Up Requirements 9 Signal and Power-Up Requirements9.1 Power-Up Requirements Preliminary InformationSignal and Power-Up Requirements AMD Athlon XP Processor Model 8 Data Sheet1. RESET# must be asserted before PWROK is asserted Preliminary InformationSignal and Power-Up Requirements AMD Athlon XP Processor Model 8 Data Sheet4. PWROK assertion to deassertion of RESET# Preliminary InformationSignal and Power-Up Requirements 9.2 Processor Warm Reset RequirementsAMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationMechanical Data 10 Mechanical Data10.1 Die Loading Preliminary InformationAMD Athlon XP 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 XP Processors Model 8 with a CPUID ofAMD Athlon XP Processors Model 8 with a CPUID of 10.3 Part Number 27291 OPGA Package Dimensions forTable 22. Part Number 27291 OPGA Package Dimensions for 1. Dimensions are given in millimetersMechanical Data AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Chapter1. Dimensions are given in millimeters 10.4 Part Number 27648 OPGA Package Dimensions forTable 23. Part Number 27648 OPGA Package Dimensions for AMD Athlon XP Processors Model 8 with a CPUID ofMechanical Data AMD Athlon XP Processor Model 8 Data SheetPreliminary Information ChapterPin Descriptions 11.1 Pin Diagram and Pin Name Abbreviations11 Pin Descriptions Preliminary InformationModel Figure 16. AMD Athlon XP Processor Model 8 Pin Diagram-Topside ViewAMD Athlon XP Processor Topside ViewAMD Athlon XP Processor Model 8 Data Sheet Bottomside ViewChapter Pin Descriptions ModelPreliminary Information Table 24. Pin Name AbbreviationsAMD Athlon XP Processor Model 8 Data Sheet Pin DescriptionsChapter Table 24. Pin Name Abbreviations continuedPreliminary Information Pin DescriptionsTable 24. Pin Name Abbreviations continued AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Pin DescriptionsChapter Preliminary InformationTable 24. Pin Name Abbreviations continued Pin DescriptionsTable 24. Pin Name Abbreviations continued AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Pin DescriptionsChapter Preliminary InformationTable 24. Pin Name Abbreviations continued Pin DescriptionsTable 24. Pin Name Abbreviations continued AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Pin DescriptionsChapter 11.2 Pin ListPreliminary Information Pin DescriptionsPreliminary Information Table 25. Cross-Reference by Pin LocationAMD Athlon XP Processor Model 8 Data Sheet Pin DescriptionsPin Descriptions Preliminary InformationChapter SDATAINCLK3#Pin Descriptions AMD Athlon XP Processor Model 8 Data SheetPreliminary Information SDATAINCLK1#Preliminary Information ChapterPin Descriptions Pin Descriptions AMD Athlon XP Processor Model 8 Data SheetPreliminary Information SDATAINCLK0#Preliminary Information ChapterPin Descriptions AMD Athlon XP Processor Model 8 Data Sheet Preliminary InformationPin Descriptions Chapter Preliminary InformationTable 25. Cross-Reference by Pin Location Pin DescriptionsAMD Athlon XP Processor Model 8 Data Sheet See the AMD Athlon System Bus Specification, order#11.3 Detailed Pin Descriptions Preliminary InformationPreliminary Information Circuits” chapter of the AMD Athlon Processor-BasedMotherboard Design Guide, order# ChapterPreliminary Information Table 26. FID30 Clock Multiplier EncodingsAMD Athlon XP Processor Model 8 Data Sheet Pin DescriptionsFLUSH# Pin JTAG PinsPreliminary Information IGNNE# PinKey Pins AMD Athlon XP Processor Model 8 Data SheetK7CLKOUT# Pins NC PinsPreliminary Information see the AMD Athlon System Bus Specification, order#page 35 and the AMD Athlon Processor-Based Motherboard ChapterPreliminary Information the AMD Athlon Processor-Based Motherboard Design GuideAMD Athlon XP Processor Model 8 Data Sheet AMD Athlon Processor-Based Motherboard Design Guide, order#Figure 18. OPN Example for the AMD Athlon XP Processor Model 12 Ordering InformationStandard AMD Athlon XP Processor Model 8 Products Ordering InformationOrdering Information AMD Athlon XP Processor Model 8 Data SheetPreliminary Information ChapterIdeal Diode Equation Appendix AThermal Diode Calculations Appendix A - Thermal Diode CalculationsTemperature Offset Correction AMD Athlon XP Processor Model 8 Data SheetPreliminary Information T die , spec + 273.15 ⋅ ln cancellation--- I-- high------  = T die , spec + 273.15 ⋅Appendix A - Thermal Diode Calculations AMD Athlon XP Processor Model 8 Data SheetPreliminary Information 25175H- MarchConventions and Abbreviations Signals and BitsAppendix B Appendix B - Conventions and AbbreviationsData Terminology AMD Athlon XP Processor Model 8 Data SheetPreliminary Information Preliminary Information Abbreviations and AcronymsTable 31. Abbreviations Appendix B - Conventions and AbbreviationsAMD Athlon XP Processor Model 8 Data Sheet Table 31. Abbreviations continuedTable 32. Acronyms Preliminary InformationTable 32. Acronyms continued Preliminary InformationAppendix B - Conventions and Abbreviations Preliminary Information AMD Athlon XP Processor Model 8 Data SheetZero Delay Buffer Table 32. Acronyms continuedBuilders Guide for Desktop/Tower Systems, order# Related PublicationsAMD Athlon Processor x86 Code Optimization Guide, order# Preliminary InformationAppendix B - Conventions and Abbreviations AMD Athlon XP Processor Model 8 Data SheetPreliminary Information 25175H- March