AMD 8 manual Connect and Disconnect Protocol, Probe State, Connect Protocol

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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.

 

The Southbridge deasserts STPCLK# and brings the processor

 

out of the S1 Stop Grant state when any enabled resume event

 

occurs.

Probe State

The Probe state is entered when the Northbridge connects the

 

AMD Athlon system bus to probe the processor (for example, to

 

snoop the processor caches) when the processor is in the Halt or

 

Stop Grant state. When in the Probe state, the processor

 

responds to a probe cycle in the same manner as when it is in

 

the Working state. When the probe has been serviced, the

 

processor returns to the same state as when it entered the

 

Probe state (Halt or Stop Grant state). When probe activity is

 

completed the processor only returns to a low-power state after

 

the Northbridge disconnects the AMD Athlon system bus again.

4.2

Connect and Disconnect Protocol

 

 

Significant power savings of the processor only occur if the

 

 

processor is disconnected from the system bus by the

 

 

Northbridge while in the Halt or Stop Grant state. The

 

 

Northbridge can optionally initiate a bus disconnect upon the

 

 

receipt of a Halt or Stop Grant special cycle. The option of

 

 

disconnecting is controlled by an enable bit in the Northbridge.

 

 

If the Northbridge requires the processor to service a probe

 

 

after the system bus has been disconnected, it must first

 

 

initiate a system bus connect.

Connect Protocol

In addition to the legacy STPCLK# signal and the Halt and Stop

 

 

Grant special cycles, the AMD Athlon system bus connect

 

 

protocol includes the CONNECT, PROCRDY, and CLKFWDRST

 

 

signals and a Connect special cycle.

AMD Athlon system bus disconnects are initiated by the Northbridge in response to the receipt of a Halt or Stop Grant. Reconnect is initiated by the processor in response to an interrupt for Halt or STPCLK# deassertion. Reconnect is initiated by the Northbridge to probe the processor.

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Power Management

Chapter 4

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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 Typical AMD Athlon XP Processor Model 8 System Block Diagram List of FiguresList of Figures List of Tables List of Tables Revision History Bus AC Characteristics, on Apic Pin AC and DC 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 Interface Signals Signaling TechnologyOverview AMD Athlon System Bus Signals Push-Pull PP DriversLogic Symbol Diagram Frequency Control Front-Side Bus Autodetect LegacyDiode Preliminary Information Power Management Power Management StatesWorking State Halt StatePreliminary Information Connect and Disconnect Protocol Probe StateConnect Protocol Preliminary Information Procrdy Exiting the Stop Grant State and Bus Connect Sequence Diagram Connect StateConnect Pending Disconnect Disconnect4/C Disconnect requestReturn internal clocks to full speed and assert NorthbridgeClock Control Cpuid Support Preliminary Information Chapter Model Number Maximum49.4 W 51.0 W48.5 W 62.8 W68.3 W Parameter Description Minimum Maximum Clock FrequencyDuty Cycle Advanced 266 FSB AMD Athlon System Bus AC Characteristics AMD Athlon System Bus AC CharacteristicsPreliminary Information Electrical and Thermal Specifications Thermal Power5Maximum Typical 2083 2600+ 2167 2700+166 Advanced 333 FSB AMD Athlon System Bus AC Characteristics Different clock edge ForwardPreliminary Information Interface Signal Groupings Interface Signal GroupingsElectrical Data ConventionsSignals See Voltage Identification PowerTest Pins on 73, Ferr Pin onVcca AC and DC Characteristics Voltage Identification VID40Frequency Identification FID30 Vcccore Characteristics Vcccore AC and DC CharacteristicsDecoupling 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 Rise Time Signal Fall TimeInput Time to Acquire Input Time to ReacquireOpen-Drain Test Circuit 50 Ω ±3% Open-Drain Pin IOL = Output Current2Thermal Diode Characteristics Thermal Diode Electrical CharacteristicsThermal Diode Electrical Characteristics Preliminary Information Apic Pins AC and DC Characteristics Apic Pin AC and DC CharacteristicsGuidelines for Platform Thermal Protection of the Processor Signal and Power-Up Requirements Power-Up RequirementsPwrok Preliminary Information Processor Warm Reset Requirements Clock MultiplierSelection FID30 Mechanical Data Die LoadingMechanical Loading Location Dynamic MAX Static MAX Units Die Surface 100Letter or Minimum Maximum 45311.33 REF 435 375 Preliminary Information Dimension 49.27 49.78 D1/E1 45.72 BSC 917 REF 47 REF 977 Preliminary Information Pin Diagram and Pin Name Abbreviations Pin DescriptionsAMD Athlon XP Processor Bottomside View Pin Name Abbreviations Abbreviation Full Name Pin Q31 S31 U31 U37 W31 Y31 Y33 AA31AC31 AD30AE33 AJ35AG37 AL33W33 J35E27 E15F24 F28F32 F34AK34 AK36AM10 AM14V30 V32V34 V36Pin List Cross-Reference by Pin Location Pin NameNo Pin A35 SDATA40# A37 SDATA30#SDATA52# E11 SDATA50# E13 SDATA49# E15 E29 SDATA33# E31 SDATA32# Pin NameE33 NC Pin E35 SDATA31# E37 SDATA22# NC Pin F10NC Pin H10 H12 H28 NC Pin H30 H32 H34NC Pin VID4 J31 J33 SDATA19# J35 J37 SDATA29#Key Pin Q31 NC Pin Q33 SDATA24# Q35 SDATA17# Q37 SDATA16# S31 NC Pin S33S35 SDATA15# S37 U31 NC Pin U33FID0 FID1 NC Pin W31 W33FID2 FID3 NC Pin Key Pin Y31 Y33 Y35 Y37 SDATA12#NC Pin AD30 AD32 AE31 NC Pin AE33NC Pin AF10 AF12 AF20AH30 FSBSense1 AH32 NC Pin AJ11 AJ13 Analog AJ15 AJ17 AJ19 AJ21AJ27 NC Pin AJ29 NC Pin AK10AL25 NC Pin AL27 AL29 NC Pin AM10NC Pin Name AN11 NC Pin AN13Detailed Pin Descriptions COREFB# Pins PinsFID30 Pins Connect PinFID30 Clock Multiplier Encodings FID30Jtag Pins FLUSH# PinIGNNE# Pin INIT# PinK7CLKOUT# Pins Key PinsNC Pins PGA Orientation PinsSADDOUT10# Pins Scan PinsThermdc Pins VID40 PinsZN and ZP Pins VID40 Code to Voltage DefinitionVrefsys Pin VID40Ordering Information Standard AMD Athlon XP Processor Model 8 ProductsPreliminary Information Ideal Diode Equation Constants and Variables for the Ideal Diode EquationTemperature Offset Correction --- I-- high------  Preliminary Information Signals and Bits Appendix BData Terminology Abbreviations and Acronyms AbbreviationsAbbreviation Meaning Acronyms APINMI 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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