AMD 8 manual Interface Signals, Overview, Signaling Technology

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Preliminary Information

25175H —March 2003

AMD Athlon™ XP Processor Model 8 Data Sheet

2 Interface Signals

This section describes the interface signals utilized by the

AMD Athlon™ XP processor model 8.

2.1Overview

The AMD Athlon™ system bus architecture is designed to deliver excellent data movement bandwidth for next- generation x86 platforms as well as the high-performance required by enterprise-class application software. The system bus architecture consists of three high-speed channels (a unidirectional processor request channel, a unidirectional probe channel, and a 64-bit bidirectional data channel), source-synchronous clocking, and a packet-based protocol. In addition, the system bus supports several control, clock, and legacy signals. The interface signals use an impedance controlled push-pull, low-voltage, swing-signaling technology contained within the Socket A socket.

For more information, see “AMD Athlon™ System Bus Signals” on page 6, Chapter 11, “Pin Descriptions” on page 55, and the AMD Athlon™ System Bus Specification, order# 21902.

2.2Signaling Technology

The AMD Athlon system bus uses a low-voltage, swing-signaling technology, that has been enhanced to provide larger noise margins, reduced ringing, and variable voltage levels. The signals are push-pull and impedance compensated. The signal inputs use differential receivers that require a reference voltage (VREF). The reference signal is used by the receivers to determine if a signal is asserted or deasserted by the source. Termination resistors are not needed because the driver is impedance-matched to the motherboard and a high impedance reflection is used at the receiver to bring the signal past the input threshold.

For more information about pins and signals, see Chapter 11, “Pin Descriptions” on page 55.

Chapter 2

Interface Signals

5

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Contents AMD AthlonTM XP Processor Model Data Sheet Advanced Micro Devices, Inc. All rights reserved Contents Electrical Data Ordering Information Preliminary Information List of Figures Typical AMD Athlon XP Processor Model 8 System Block DiagramList of Figures List of Tables List of Tables Revision History Apic Pin AC and DC Characteristics, on Bus AC Characteristics, on, revised , Interface Signal Groupings, on , revised wording in OverviewOverview QuantiSpeed Architecture Summary Typical AMD Athlon XP Processor Model 8 System Block Diagram Preliminary Information Overview Interface SignalsSignaling Technology Push-Pull PP Drivers AMD Athlon System Bus SignalsDiode Logic Symbol DiagramFrequency Control Front-Side Bus Autodetect Legacy Preliminary Information Power Management States Power ManagementHalt State Working StatePreliminary Information Connect Protocol Connect and Disconnect ProtocolProbe State Preliminary Information Procrdy Exiting the Stop Grant State and Bus Connect Sequence Connect State DiagramDisconnect request Connect Pending Disconnect Disconnect4/CReturn internal clocks to full speed and assert NorthbridgeClock Control Cpuid Support Preliminary Information Chapter Maximum Model Number49.4 W 51.0 W68.3 W 48.5 W62.8 W Duty Cycle Parameter Description Minimum MaximumClock Frequency AMD Athlon System Bus AC Characteristics Advanced 266 FSB AMD Athlon System Bus AC CharacteristicsPreliminary Information Thermal Power5 Electrical and Thermal SpecificationsMaximum Typical 2083 2600+ 2167 2700+166 Different clock edge Forward Advanced 333 FSB AMD Athlon System Bus AC CharacteristicsPreliminary Information Interface Signal Groupings Interface Signal GroupingsElectrical Data ConventionsPower Signals See Voltage IdentificationTest Pins on 73, Ferr Pin onFrequency Identification FID30 Vcca AC and DC CharacteristicsVoltage Identification VID40 Decoupling Vcccore CharacteristicsVcccore AC and DC Characteristics Vcccore Voltage Waveform Absolute Ratings Absolute RatingsSysclk and SYSCLK# DC Characteristics Sysclk and SYSCLK# DC CharacteristicsAMD Athlon System Bus DC Characteristics AMD Athlon System Bus DC CharacteristicsGeneral AC and DC Characteristics General AC and DC CharacteristicsSignal Fall Time Signal Rise TimeInput Time to Acquire Input Time to Reacquire50 Ω ±3% Open-Drain Pin IOL = Output Current2 Open-Drain Test CircuitThermal Diode Electrical Characteristics Thermal Diode CharacteristicsThermal Diode Electrical Characteristics Preliminary Information Guidelines for Platform Thermal Protection of the Processor Apic Pins AC and DC CharacteristicsApic Pin AC and DC Characteristics Power-Up Requirements Signal and Power-Up RequirementsPwrok Preliminary Information Selection FID30 Processor Warm Reset RequirementsClock Multiplier Die Loading Mechanical DataMechanical Loading Location Dynamic MAX Static MAX Units Die Surface 100453 Letter or Minimum Maximum11.33 REF 435 375 Preliminary Information Dimension 49.27 49.78 D1/E1 45.72 BSC 917 REF 47 REF 977 Preliminary Information Pin Descriptions Pin Diagram and Pin Name AbbreviationsAMD Athlon XP Processor Bottomside View Pin Name Abbreviations AA31 Abbreviation Full Name Pin Q31 S31 U31 U37 W31 Y31 Y33AC31 AD30AJ35 AE33AG37 AL33J35 W33E27 E15F28 F24F32 F34AK36 AK34AM10 AM14V32 V30V34 V36Pin List Pin Name Cross-Reference by Pin LocationNo Pin A35 SDATA40# A37 SDATA30#E29 SDATA33# E31 SDATA32# Pin Name SDATA52# E11 SDATA50# E13 SDATA49# E15E33 NC Pin E35 SDATA31# E37 SDATA22# NC Pin F10H28 NC Pin H30 H32 H34 NC Pin H10 H12NC Pin VID4 J31 J33 SDATA19# J35 J37 SDATA29#S31 NC Pin S33 Key Pin Q31 NC Pin Q33 SDATA24# Q35 SDATA17# Q37 SDATA16#S35 SDATA15# S37 U31 NC Pin U33NC Pin W31 W33 FID0 FID1FID2 FID3 NC Pin Key Pin Y31 Y33 Y35 Y37 SDATA12#AE31 NC Pin AE33 NC Pin AD30 AD32NC Pin AF10 AF12 AF20NC Pin AJ11 AJ13 Analog AJ15 AJ17 AJ19 AJ21 AH30 FSBSense1 AH32AJ27 NC Pin AJ29 NC Pin AK10NC Pin AM10 AL25 NC Pin AL27 AL29NC Pin Name AN11 NC Pin AN13Detailed Pin Descriptions Pins COREFB# PinsFID30 Pins Connect PinFID30 FID30 Clock Multiplier EncodingsFLUSH# Pin Jtag PinsIGNNE# Pin INIT# PinKey Pins K7CLKOUT# PinsNC Pins PGA Orientation PinsScan Pins SADDOUT10# PinsThermdc Pins VID40 PinsVID40 Code to Voltage Definition ZN and ZP PinsVrefsys Pin VID40Standard AMD Athlon XP Processor Model 8 Products Ordering InformationPreliminary Information Constants and Variables for the Ideal Diode Equation Ideal Diode EquationTemperature Offset Correction --- I-- high------  Preliminary Information Appendix B Signals and BitsData Terminology Abbreviation Meaning Abbreviations and AcronymsAbbreviations API AcronymsNMI VGA Related Publications Preliminary Information

8 specifications

AMD's Ryzen 8000 series, commonly referred to as AMD 8, represents a significant leap in performance and efficiency, leveraging advanced technologies that cater to gamers, content creators, and enterprise users alike. With a continued focus on the Zen architecture, the Ryzen 8000 processors enhance performance per watt, delivering increased efficiency without compromising on power.

One of the standout features of AMD 8 is its adoption of the 5nm process technology. This innovation allows for a higher density of transistors, resulting in improved performance metrics and reduced power consumption. The smaller node size not only enhances clock speeds but also ensures that the chips generate less heat, making thermal management easier for system builders.

AMD has introduced a new architecture with the Ryzen 8000 series known as Zen 5. This architecture brings improved instructions per cycle (IPC) over its predecessors, leading to faster performance in both single-threaded and multi-threaded workloads. Gamers will benefit from higher frame rates, while professionals in fields such as video editing and 3D rendering can expect noticeable improvements in rendering times.

Another key technology in the AMD 8 lineup is the integration of AMD's next-generation RDNA graphics architecture. This allows for enhanced graphics performance in systems without dedicated GPU hardware. The combination of advanced graphics and CPU capabilities provides a more versatile platform for casual gamers and users with less demanding graphical needs.

Support for PCIe 5.0 is a game changer for the AMD 8000 series, offering double the bandwidth of its predecessor, PCIe 4.0. This feature allows for faster data transfer rates with compatible SSDs and graphics cards, ensuring that users can take full advantage of the latest storage technologies.

Additionally, AMD's Infinity Cache has made its way into the Ryzen 8000 series, further enhancing memory bandwidth. This technology reduces latency and increases efficiency by caching frequently accessed data closer to the processor.

In terms of connectivity, the Ryzen 8000 models come equipped with Wi-Fi 7 and Bluetooth 5.2, providing ultra-fast wireless connections that are essential for modern gaming and streaming experiences.

In summary, AMD's Ryzen 8000 series, or AMD 8, is designed for maximum performance and efficiency. With its advanced 5nm technology, enhanced Zen 5 architecture, integrated RDNA graphics, PCIe 5.0 support, Infinity Cache, and state-of-the-art connectivity features, it sets a new standard for processors in its class, making it a top choice for both gamers and professionals.
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