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Preliminary Information

AMD Athlon XP

Processor Model 8

Data Sheet

Publication # 25175 Rev. H

Issue Date: March 2003

Summary of content (106 pages)

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Preliminary Information AMD Athlon XP Processor Model 8 Data Sheet TM Publication # 25175 Rev.
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Preliminary Information © 2001–2003 Advanced Micro Devices, Inc. All rights reserved. The contents of this document are provided in connection with Advanced Micro Devices, Inc. (“AMD”) products. AMD makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication and reserves the right to make changes to specifications and product descriptions at any time without notice.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Contents Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 2 Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 2.2 2.3 2.4 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 8 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 8.10 8.11 8.12 8.13 8.14 9 9.2 10.3 10.4 Die Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Part Number 27291 OPGA Package Dimensions for AMD Athlon XP Processors Model 8 with a CPUID of 680 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 CLKIN, RSTCLK (SYSCLK) Pins. . . . . . . . . . . . . . . . . . . . 74 CONNECT Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 COREFB and COREFB# Pins . . . . . . . . . . . . . . . . . . . . . . . 75 CPU_PRESENCE# Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 DBRDY and DBREQ# Pins . . . . . . . . . . . . . . . . . . . . . . . . . 75 FERR Pin . . . . . . . . . . . . . . . . . .
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 6 Table of Contents
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 List of Figures Figure 1. Typical AMD Athlon™ XP Processor Model 8 System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Figure 2. Logic Symbol Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 3. AMD Athlon XP Processor Model 8 Power Management States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 8 25175H—March 2003 List of Figures
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 List of Tables List of Tables Table 1. Electrical and Thermal Specifications for Processors with a CPUID of 680. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Table 2. Electrical and Thermal Specifications for Processors with a CPUID of 681. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Table 3. SYSCLK and SYSCLK# AC Characteristics . . . . . . . . . . . . . . .
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 10 25175H—March 2003 Table 28. VID[4:0] Code to Voltage Definition . . . . . . . . . . . . . . . . . . . . . 80 Table 29. Constants and Variables for the Ideal Diode Equation . . . . . . 83 Table 30. Constants and Variables Used in Temperature Offset Equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Table 31. Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Revision History Date Rev Description Public revision H of the AMD Athlon™ XP Processor Model 8 Data Sheet includes the following changes: March 2003 H ■ ■ In Chapter 6, revised Table 2, “Electrical and Thermal Specifications for Processors with a CPUID of 681,” on page 23. In Chapter 12, revised Figure 18, “OPN Example for the AMD Athlon™ XP Processor Model 8,” on page 81.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet Date Rev 25175H—March 2003 Description Public revision D of the AMD Athlon™ XP Processor Model 8 Data Sheet includes the following changes: ■ ■ ■ October 2002 D ■ ■ ■ In Chapter 1, revised wording in Overview.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 1 Overview The AMD Athlon™ XP processor model 8 with QuantiSpeed™ architecture powers the next generation in computing platforms, delivering extreme performance for Windows® XP. The AMD Athlon™ XP processor model 8, based on leadingedge 0.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 The features of the AMD Athlon XP processor model 8 are QuantiSpeed™ architecture, a high-performance full-speed cache, an advanced 333 front-side Bus (FSB) with a 2.7-Gigabyte per second system bus, or an advanced 266 FSB with a 2.1-Gigabyte per second system bus, and 3DNow!™ Professional technology.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 The AMD Athlon XP processor model 8 delivers excellent system performance in a cost-effective, industry-standard form factor. The AMD Athlon XP processor model 8 is compatible with motherboards based on Socket A. Figure 1 shows a typical AMD Athlon XP processor model 8 system block diagram.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 4 25175H—March 2003 Overview Chapter 1
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 2 Interface Signals This section describes the interface signals utilized by the AMD Athlon™ XP processor model 8. 2.1 Overview The AMD Athlon™ system bus architecture is designed to deliver excellent data movement bandwidth for nextgeneration x86 platforms as well as the high-performance required by enterprise-class application software.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 2.3 25175H—March 2003 Push-Pull (PP) Drivers The AMD Athlon XP processor model 8 supports push-pull (PP) drivers. The system logic configures the processor with the configuration parameter called SysPushPull (1=PP). The impedance of the PP drivers is set to match the impedance of the motherboard by two external resistors connected to the ZN and ZP pins. See “ZN and ZP Pins” on page 80 for more information. 2.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 3 Logic Symbol Diagram Figure 2 is the logic symbol diagram of the processor. This diagram shows the logical grouping of the input and output signals.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 8 Logic Symbol Diagram 25175H—March 2003 Chapter 3
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 4 Power Management This chapter describes the power management control system of the AMD Athlon™ XP processor model 8. The power management features of the processor are compliant with the ACPI 1.0b and ACPI 2.0 specifications. 4.1 Power Management States The AMD Athlon XP processor model 8 supports low-power Halt and Stop Grant states.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 The following sections provide an overview of the power m a n a g e m e n t s t a t e s . Fo r m o re d e t a i l s , re f e r t o t h e AMD Athlon™ System Bus Specification, order# 21902. Note: In all power management states that the processor is powered, the system must not stop the system clock (SYSCLK/SYSCLK#) to the processor.
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Preliminary Information 25175H—March 2003 AMD Athlon™ XP Processor Model 8 Data Sheet places the processor into the higher power probe state. After the Northbridge has completed all probes of the processor, the Northbridge must disconnect the AMD Athlon system bus again so that the processor can return to the low-power state. During the Stop Grant states, the processor latches INIT#, INTR, NMI, SMI#, or a local APIC interrupt message, if they are asserted.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 The Stop Grant state is also entered for the S1, Powered On Suspend, system sleep state based on a write to the SLP_TYP and SLP_EN fields in the ACPI-defined Power Management 1 control register in the Southbridge. During the S1 Sleep state, system software ensures no bus master or probe activity occurs.
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Preliminary Information 25175H—March 2003 AMD Athlon™ XP Processor Model 8 Data Sheet 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.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Figure 4 shows STPCLK# assertion resulting in the processor in the Stop Grant state and the AMD Athlon system bus disconnected. STPCLK# AMD Athlon™ System Bus Stop Grant CONNECT PROCRDY CLKFWDRST Stop Grant PCI Bus Figure 4. AMD Athlon™ System Bus Disconnect Sequence in the Stop Grant State An example of the AMD Athlon system bus disconnect sequence is as follows: 1.
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Preliminary Information 25175H—March 2003 AMD Athlon™ XP Processor Model 8 Data Sheet Figure 5 shows the signal sequence of events that takes the processor out of the Stop Grant state, connects the processor to the AMD Athlon system bus, and puts the processor into the Working state. STPCLK# PROCRDY CONNECT CLKFWDRST Figure 5. Exiting the Stop Grant State and Bus Connect Sequence The following sequence of events removes the processor from the Stop Grant state and connects it to the system bus: 1.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet Connect State Diagram 25175H—March 2003 Figure 6 below and Figure 7 on page 17 show the Northbridge and processor connect state diagrams, respectively. 4/A 1 2/A Disconnect Pending Disconnect Requested Connect 3 3/C 5/B 8 8 Reconnect Pending Disconnect Probe Pending 2 7/D,C 6/C 7/D Probe Pending 1 Condition Action 1 A disconnect is requested and probes are still pending.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Connect 6/B 1 2/B Connect Pending 2 Disconnect Pending 5 Connect Pending 1 3/A Disconnect 4/C Condition 1 Action CONNECT is deasserted by the Northbridge (for a previously sent Halt or Stop Grant special cycle). Processor receives a wake-up event and must cancel 2 the disconnect request. 3 Deassert PROCRDY and slow down internal clocks. 4 Processor wake-up event or CONNECT asserted by Northbridge.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 4.3 25175H—March 2003 Clock Control The processor implements a Clock Control (CLK_Ctl) MSR (address C001_001Bh) that determines the internal clock divisor when the AMD Athlon system bus is disconnected. Refer to the AMD Athlon™ and AMD Duron™ Processors BIOS, Software, and Debug Developers Guide, order# 21656, for more details on the CLK_Ctl register.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 5 CPUID Support AMD Athlon™ XP processor model 8 version and feature set recognition can be performed through the use of the CPUID instruction, that provides complete information about the processor—vendor, type, name, etc., and its capabilities. Software can make use of this information to accurately tune the system for maximum performance and benefit to users.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 20 CPUID Support 25175H—March 2003 Chapter 5
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Preliminary Information 25175H—March 2003 6 AMD Athlon™ XP Processor Model 8 Data Sheet Advanced 266 Front-Side Bus AMD Athlon™ XP Processor Model 8 Specifications This chapter describes the electrical specifications that are unique to the advanced 266 front-side bus (FSB) AMD Athlon™ XP processor model 8. 6.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 1 shows the part-specific electrical and thermal specifications in the C0 working state and the S1 Stop Grant state for processors with a CPUID = 680. Table 1. Electrical and Thermal Specifications for Processors with a CPUID of 680 V Frequency in MHz CC_CORE (Core (Model Number) Voltage) ICC (Processor Current) Working State C0 Maximum Typical Stop Grant S11, 2, 3, 4 Maximum 29.9 A 34.0 A 30.9 A 35.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 2 shows the part-specific electrical and thermal specifications in the C0 working state and the S1 Stop Grant state for processors with a CPUID = 681 Table 2.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 6.2 25175H—March 2003 Advanced 266 FSB AMD Athlon™ XP Processor Model 8 SYSCLK and SYSCLK# AC Characteristics . Table 3. Table 3 shows the SYSCLK/SYSCLK# differential clock AC characteristics of this processor. SYSCLK and SYSCLK# AC Characteristics Symbol Parameter Description Minimum Maximum Units Notes 50 133 MHz 1 30% 70% 2, 3 Clock Frequency Duty Cycle t1 Period 7.5 ns t2 High Time 1.05 ns t3 Low Time 1.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 6.3 Advanced 266 FSB AMD Athlon™ System Bus AC Characteristics The AC characteristics for the AMD Athlon system bus of this processor are shown in Table 4. The parameters are grouped based on the source or destination of the signals involved. Table 4.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 26 25175H—March 2003 Advanced 266 Front-Side Bus AMD Athlon™ XP Processor Model 8 Specifications Chapter 6
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 7 Advanced 333 Front-Side Bus AMD Athlon™ XP Processor Model 8 Specifications This chapter describes the electrical specifications that are unique to the advanced 333 front-side bus (FSB) AMD Athlon™ XP processor model 8. 7.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 7.2 25175H—March 2003 Advanced 333 FSB AMD Athlon™ XP Processor Model 8 SYSCLK and SYSCLK# AC Characteristics Table 6 shows the SYSCLK/SYSCLK# differential clock AC characteristics of this processor. Table 6. SYSCLK and SYSCLK# AC Characteristics Symbol Parameter Description Minimum Maximum Units Notes 50 166 MHz 1 30% 70% 6 ns 2, 3 Clock Frequency Duty Cycle t1 Period t2 High Time 1.0 ns t3 Low Time 1.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 7.3 Advanced 333 FSB AMD Athlon™ System Bus AC Characteristics The AC characteristics of the AMD Athlon system bus of this processor are shown in Table 7. The parameters are grouped based on the source or destination of the signals involved. Table 7.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 30 25175H—March 2003 Advanced 333 Front-Side Bus AMD Athlon™ XP Processor Model 8 Specifications Chapter 7
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 8 Electrical Data This chapter describes the electrical characteristics that apply to all desktop AMD Athlon™ XP processors model 8. 8.1 Conventions The conventions used in this chapter are as follows: ■ ■ 8.2 Current specified as being sourced by the processor is negative. Current specified as being sunk by the processor is positive.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet Table 8. Interface Signal Groupings (continued) Signal Group Power Southbridge System Clocks Test Thermal Signals Notes VID[4:0], VCCA, VCC_CORE, COREFB, COREFB# See “Voltage Identification (VID[4:0])” on page 33, “VID[4:0] Pins” on page 78,“VCCA AC and DC Characteristics” on page 33, “VCC_CORE Characteristics” on page 34,“VCCA Pin” on page 78, and “COREFB and COREFB# Pins” on page 74.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 8.3 Voltage Identification (VID[4:0]) Table 9 shows the VID[4:0] DC Characteristics. For more information on VID[4:0] DC Characteristics, see “VID[4:0] Pins” on page 78. Table 9. VID[4:0] DC Characteristics Parameter Description Min IOL Output Current Low 6 mA VOH Output High Voltage – Max 5.25 V * Note: * 8.4 The VID pins are either open circuit or pulled to ground.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 8.6 25175H—March 2003 Decoupling See the AMD Athlon™ Processor-Based Motherboard Design Guide, order# 24363, or contact your local AMD office for information about the decoupling required on the motherboard for use with the AMD Athlon™ XP processor model 8. 8.7 VCC_CORE Characteristics Table 12 shows the AC and DC characteristics for VCC_CORE. See Figure 10 on page 35 for a graphical representation of the VCC_CORE waveform. Table 12.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Figure 10 shows the processor core voltage (V CC_CORE ) waveform response to perturbation. The tmin_AC (negative AC transient excursion time) and t max_AC (positive AC transient excursion time) represent the maximum allowable time below or above the DC tolerance thresholds. tMAX_AC VCC_CORE_AC_MAX VCC_CORE_DC_MAX VCC_CORE_NOM VCC_CORE_DC_MIN VCC_CORE_AC_MIN tMIN_AC ICORE_MAX dI /dt ICORE_MIN Figure 10.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 8.8 25175H—March 2003 Absolute Ratings The AMD Athlon XP processor model 8 should not be subjected to conditions exceeding the absolute ratings, as such conditions can adversely affect long-term reliability or result in functional damage. Table 13 lists the maximum absolute ratings of operation for the AMD Athlon XP processor model 8. Table 13.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 8.9 SYSCLK and SYSCLK# DC Characteristics Table 14 shows the DC characteristics of the SYSCLK and SYSCLK# differential clocks. The SYSCLK signal represents CLKIN and RSTCLK tied together while the SYSCLK# signal re p re s e n t s C L K I N # a n d R S T C L K # t i e d t og e t h e r.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 8.10 25175H—March 2003 AMD Athlon™ System Bus DC Characteristics Table 15 shows the DC characteristics of the AMD Athlon system bus used by the AMD Athlon XP processor model 8. Table 15. AMD Athlon™ System Bus DC Characteristics Symbol VREF Parameter Condition Min Max (0.5 x VCC_CORE) (0.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 8.11 General AC and DC Characteristics Table 16 shows the AMD Athlon XP processor model 8 AC and DC characteristics of the Southbridge, JTAG, test, and miscellaneous pins. Table 16.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 16. General AC and DC Characteristics (continued) Symbol Parameter Description Condition Min Max Units Notes TBIT Input Time to Acquire 20.0 ns 7, 8 TRPT Input Time to Reacquire 40.0 ns 9–13 TRISE Signal Rise Time 1.0 3.0 V/ns 6 TFALL Signal Fall Time 1.0 3.0 V/ns 6 CPIN Pin Capacitance 4 12 pF TVALID Time to data valid 100 ns 14 Notes: 1.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 8.12 Open-Drain Test Circuit Figure 12 is a test circuit that may be used on automated test equipment (ATE) to test for validity on open drain pins. Refer to Table 16, “General AC and DC Characteristics,” on page 39 for timing requirements. VTermination1 50 Ω ±3% Open-Drain Pin IOL = Output Current2 Notes: 1. VTermination = 1.2 V for VID and FID pins VTermination = 1.0 V for APIC pins 2.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 8.13 25175H—March 2003 Thermal Diode 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.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Thermal Protection Characterization The following section describes parameters relating to thermal protection. The implementation of thermal control circuitry to control processor temperature is left to the manufacturer to determine how to implement. Thermal limits in motherboard design are necessary to protect the processor from thermal damage.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 18. Guidelines for Platform Thermal Protection of the Processor Symbol Parameter Description Max Units Notes TSHUTDOWN Thermal diode shutdown temperature for processor protection 125 °C 1, 2, 3 TSD_DELAY 500 ms 1, 3 Maximum allowed time from TSHUTDOWN detection to processor shutdown Notes: 1. The thermal diode is not 100% tested, it is specified by design and limited characterization. 2.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 9 Signal and Power-Up Requirements The AMD Athlon™ XP processor model 8 is designed to provide functional operation if the voltage and temperature parameters are within the limits of normal operating ranges. 9.1 Power-Up Requirements Signal Sequence and Timing Description Figure 13 shows the relationship between key signals in the system during a power-up sequence.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Power-Up Timing Requirements. The signal timing requirements are as follows: 1. RESET# must be asserted before PWROK is asserted. The AMD Athlon XP processor model 8 does not set the correct clock multiplier if PWROK is asserted prior to a RESET# assertion. It is recommended that RESET# be asserted at least 10 nanoseconds prior to the assertion of PWROK.
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Preliminary Information 25175H—March 2003 AMD Athlon™ XP Processor Model 8 Data Sheet clock must be valid at this time. The system clocks are designed to be running after 3.3 V has been within specification for three milliseconds. 4. PWROK assertion to deassertion of RESET# The duration of RESET# assertion during cold boots is intended to satisfy the time it takes for the PLL to lock with a less than 1 ns phase error.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet Clock Multiplier Selection (FID[3:0]) 25175H—March 2003 The chipset samples the FID[3:0] signals in a chipset-specific 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.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 10 Mechanical Data The AMD Athlon™ XP processor model 8 connects to the motherboard through a Pin Grid Array (PGA) socket named Socket A. This processor utilizes the organic pin grid array (OPGA) package type described in this chapter. For more information, see the AMD Athlon™ Processor-Based Motherboard Design Guide, order# 24363. 10.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 10.2 25175H—March 2003 Part Number 27291 OPGA Package Dimensions for AMD Athlon™ XP Processors Model 8 with a CPUID of 680 For AMD Athlon XP processors model 8 with a CPUID of 680, Table 21 shows the 27291 OPGA package dimensions in millimeters assigned to the letters and symbols used in the 27291 package diagram, Figure 14 on page 52. Table 21.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 10.3 Part Number 27291 OPGA Package Dimensions for AMD Athlon™ XP Processors Model 8 with a CPUID of 681 For AMD Athlon XP processors model 8 with a CPUID of 681, Table 22 shows the 27291 OPGA package dimensions in millimeters assigned to the letters and symbols used in the 27291 package diagram, Figure 14 on page 52. Table 22.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Figure 14.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 10.4 Part Number 27648 OPGA Package Dimensions for AMD Athlon™ XP Processors Model 8 with a CPUID of 681 For AMD Athlon XP processors model 8 with a CPUID of 681, Table 23 shows the part number 27648 OPGA package dimensions in millimeters assigned to the letters and symbols used in the 27648 package diagram, Figure 15 on page 54. Table 23.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Figure 15.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 11 Pin Descriptions This chapter includes pin diagrams of the organic pin grid array (OPGA) for the AMD Athlon™ XP processor model 8, a listing of pin name abbreviations, and a cross-referenced listing of pin locations to signal names. 11.1 Pin Diagram and Pin Name Abbreviations Figure 16 on page 56 shows the staggered pin grid array (PGA) for the AMD Athlon™ XP processor model 8.
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56 Pin Descriptions Z X V T R P AN AM AL 1 INTR IGNNE# FERR A20M# STPC# DBRDY FID[2] FID[0] TDI SCNCK1 TCK PICCLK VID[0] SAO#0 SAO#10 SAO#11 SAO#7 1 2 VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS 2 3 3 NMI FLUSH# INIT# RESET# PWROK PLTST# DBREQ# FID[3] FID[1] TRST# SCNINV TMS PICD#0 VID[1] SAO#1 SAO#14 SAOC# SAO#9 SAO#12 4 VSS VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VCC
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Chapter 11 8 6 4 2 10 Pin Descriptions 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 C C A SD#41 SD#42 SD#43 SD#45 SD#38 SD#47 SD#37 SD#56 SD#59 SD#60 SD#51 NC SDOC#3 SD#54 SAO#2 SAO#8 SAO#9 SAO#7 SDOC#1 B VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS VCC VSS B SD#30 SD#40 SDOC#2 NC SD#44 SD#34 SD#35 SD#39 SD#57 NC SD#62 SD#63 SD#53 SD#61 SD#55 SAO#3 SAO#5 SAO#12 A D VSS VSS VCC VSS VCC VSS VCC VSS V
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet Table 24. Pin Name Abbreviations Abbreviation 25175H—March 2003 Table 24.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 24. Pin Name Abbreviations (continued) Abbreviation Chapter 11 NC Full Name Pin Q31 NC Table 24.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 24. Pin Name Abbreviations (continued) Table 24.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 24. Pin Name Abbreviations (continued) Table 24.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet Table 24. Pin Name Abbreviations (continued) Abbreviation VCC Full Name VCC_CORE Pin F24 VCC VCC_CORE VCC 25175H—March 2003 Table 24.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 24. Pin Name Abbreviations (continued) Abbreviation VCC Full Name VCC_CORE Pin AK34 VCC VCC_CORE VCC Table 24.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet Table 24. Pin Name Abbreviations (continued) Abbreviation 64 Full Name Pin 25175H—March 2003 Table 24.
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Preliminary Information 25175H—March 2003 11.2 AMD Athlon™ XP Processor Model 8 Data Sheet Pin List Table 25 on page 66 cross-references Socket A pin location to signal name. The “L” (Level) column shows the electrical specification for this pin. “P” indicates a push-pull mode driven by a single source. “O” indicates open-drain mode that allows devices to share the pin. Note: The AMD Athlon processor supports push-pull drivers. For more information, see “Push-Pull (PP) Drivers” on page 6.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 25. Cross-Reference by Pin Location Pin Name Table 25.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 25. Cross-Reference by Pin Location (continued)Table 25.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 25. Cross-Reference by Pin Location (continued)Table 25.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 25. Cross-Reference by Pin Location (continued)Table 25.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 25. Cross-Reference by Pin Location (continued)Table 25.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 25. Cross-Reference by Pin Location (continued)Table 25.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 25. Cross-Reference by Pin Location (continued) Table 25.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 25. Cross-Reference by Pin Location Pin Name Table 25.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 11.3 25175H—March 2003 Detailed Pin Descriptions The information in this section pertains to Table 25 on page 66. A20M# Pin A20M# is an input from the system used to simulate address wrap-around in the 20-bit 8086. AMD Pin AMD Socket A processors do not implement a pin at location AH6. All Socket A designs must have a top plate or cover that blocks this pin location. When the cover plate blocks this location, a non-AMD part (e.g.
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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# Pins COREFB and COREFB# are outputs to the system that provide processor core voltage feedback to the system. CPU_PRESENCE# Pin CPU_PRESENCE# is connected to VSS on the processor package.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 26. FID[3:0] Clock Multiplier Encodings FID[3:0]2 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 Processor Clock to SYSCLK Frequency Ratio 11 11.5 12 ≥ 12.51 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 Notes: 1. All ratios greater than or equal to 12.5x have the same FID[3:0] code of 0011b, which causes the SIP configuration for all ratios of 12.5x or greater to be the same. 2.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 See “Frequency Identification (FID[3:0])” on page 33 for the DC characteristics for FID[3:0]. FSB_Sense[1:0] Pins FSB_Sense[1:0] pins are either open circuit (logic level of 1) or are pulled to ground (logic level of 0) on the processor package with a 1 kΩ resistor. In conjunction with a circuit on the motherboard, these pins may be used to automatically detect the front-side bus (FSB) setting of this processor.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 K7CLKOUT and K7CLKOUT# Pins K7CLKOUT and K7CLKOUT# are each run for two to three inches and then terminated with a resistor pair: 100 ohms to V CC_CORE and 100 ohms to VSS. The effective termination resistance and voltage are 50 ohms and VCC_CORE /2.
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Preliminary Information 25175H—March 2003 AMD Athlon™ XP Processor Model 8 Data Sheet SADDIN[1:0]# and SADDOUT[1:0]# Pins The AMD Athlon XP processor model 8 does not support SADDIN[1:0]# or SADDOUT[1:0]#. SADDIN[1]# is tied to VCC with pullup resistors, if this bit is not supported by the Northbridge (future models can support SADDIN[1]#). SADDOUT[1:0]# are tied to VCC with pullup resistors if these pins are supported by the Northbridge.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 28. VID[4:0] Code to Voltage Definition VID[4:0] VCC_CORE (V) VID[4:0] VCC_CORE (V) 00000 1.850 10000 1.450 00001 1.825 10001 1.425 00010 1.800 10010 1.400 00011 1.775 10011 1.375 00100 1.750 10100 1.350 00101 1.725 10101 1.325 00111 1.675 10111 1.275 01000 1.650 11000 1.250 01001 1.625 11001 1.225 01010 1.600 11010 1.200 01011 1.575 11011 1.175 01100 1.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 12 Ordering Information This section provides the ordering information for the AMD Athlon™ XP processor model 8. Standard AMD Athlon™ XP Processor Model 8 Products AMD standard products are available in several operating ranges. The ordering part numbers (OPN) are formed by a combination of the elements, as shown in Figure 18.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 82 Ordering Information 25175H—March 2003 Chapter 12
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Appendix A Thermal Diode Calculations This section contains information about the calculations for the on-die thermal diode of the AMD Athlon™ XP processor model 8. For electrical information about this thermal diode, see Table 17, “Thermal Diode Electrical Characteristics,” on page 42. Ideal Diode Equation The ideal diode equation uses the variables and constants defined in Table 29. Table 29.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Equation (1) shows the ideal diode calculation. k I V BE = n f, lumped ⋅ --- ⋅ T ⋅ ln  ---C-  q I S (1) Sourcing two currents and using Equation (1) derives the difference in the base-to-emitter voltage that leads to finding the diode temperature as shown in Equation (2).
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 The formulas in Equation (3) and Equation (4) can be used to calculate the temperature offset for temperature sensors that do not employ series resistance cancellation. The result is added to the value measured by the temperature sensor. Contact the vendor of the temperature sensor being used for the value of nf,TS. Refer to the document, On-Die Thermal Diode Characterization, order# 25443, for further details.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 86 25175H—March 2003 Appendix A - Thermal Diode Calculations
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Appendix B Conventions and Abbreviations This section contains information about the conventions and abbreviations used in this document. Signals and Bits ■ ■ ■ ■ Active-Low Signals—Signal names containing a pound sign, such as SFILL#, indicate active-Low signals. They are asserted in their Low-voltage state and negated in their High-voltage state.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet ■ 25175H—March 2003 Invalid and Don’t-Care—In timing diagrams, signal ranges that are invalid or don't-care are filled with a screen pattern.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Abbreviations and Acronyms Table 31 contains the definitions of abbreviations used in this document. Table 31.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 31. Abbreviations (continued) Abbreviation Meaning p pico- pA picoampere pF picofarad pH picohenry ps picosecond s Second V Volt W Watt Table 32 contains the definitions of acronyms used in this document. Table 32.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 32.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Table 32.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March 2003 Related Publications These documents provide helpful information about the AMD Athlon™ XP processor model 8, and can be found with o t h e r re l a t e d d o c u m e n t s a t t h e A M D We b s i t e , http://www.amd.com.
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Preliminary Information AMD Athlon™ XP Processor Model 8 Data Sheet 94 25175H—March 2003 Appendix B - Conventions and Abbreviations