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AMD ATHLON 8 User Manual
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18
Power Management
Chapter 4
AM
D Athlon™ XP Processor Model 8 Data Sheet
25
1
75H
—
March 2003
Preliminary Information
4.3
Clock Control
T
he processor implements a Cloc
k Control (CLK_Ctl) MSR
(addr
ess C001_001Bh) that det
ermines the internal cloc
k
di
visor when the AMD
Athlon system bus is disconnected.
Refer to the
AMD
Athlon™ and AMD
Duro
n™ Processors BIOS,
Software, and Debug Developers Guide
, or
der# 2165
6, for mor
e
details on the CLK_Ctl r
egister
.
29
31
Table of Contents
Default Chapter
3
Table of Contents
3
List of Tables
9
Revision History
11
1 Overview
13
Quantispeed™ Architecture Summary
14
2 Interface Signals
17
Overview
17
Signaling Technology
17
Push-Pull (PP) Drivers
18
AMD Athlon™ System Bus Signals
18
3 Logic Symbol Diagram
19
Advanced 266 FSB AMD Athlon XP Processor Model
20
Advanced 333 FSB AMD Athlon XP Processor Model
20
4 Power Management
21
Power Management States
21
Working State
22
Halt State
22
Stop Grant States
22
Probe State
24
Connect and Disconnect Protocol
24
Connect Protocol
24
Connect State Diagram
28
Clock Control
30
5 CPUID Support
31
6 Advanced 266 Front-Side Bus AMD Athlon™ XP Processor Model 8 Specifications
33
Part-Specific Electrical and Thermal Specifications for Advanced 266 FSB AMD Athlon XP Processors
33
Model 8
33
SYSCLK and SYSCLK# AC Characteristics
36
Advanced 266 FSB AMD Athlon System Bus AC Characteristics
37
7 Advanced 333 Front-Side Bus AMD Athlon™ XP Processor Model 8 Specifications
39
Electrical and Thermal Specifications for the Advanced 333 FSB AMD Athlon XP Processor Model 8
39
SYSCLK and SYSCLK# AC Characteristics
40
Advanced 333 FSB AMD Athlon System Bus AC Characteristics
41
AMD Athlon™ XP Processor Model 8 Data Sheet 25175H—March
42
8 Electrical Data
43
Conventions
43
Interface Signal Groupings
43
Voltage Identification (VID[4:0])
45
Frequency Identification (FID[3:0])
45
VCCA AC and DC Characteristics
45
Decoupling
46
VCC_CORE Characteristics
46
Absolute Ratings
48
SYSCLK and SYSCLK# DC Characteristics
49
AMD Athlon System Bus DC Characteristics
50
General AC and DC Characteristics
51
Open-Drain Test Circuit
53
Thermal Diode Characteristics
54
Thermal Diode Electrical Characteristics
54
Thermal Protection Characterization
55
APIC Pins AC and DC Characteristics
56
9 Signal and Power-Up Requirements
57
Power-Up Requirements
57
Signal Sequence and Timing Description
57
Clock Multiplier Selection (FID[3:0])
60
Processor Warm Reset Requirements
60
Northbridge Reset Pins
60
10 Mechanical Data
61
Die Loading
61
Part Number 27291 OPGA Package Dimensions for
62
CPUID of 680
62
Part Number 27291 OPGA Package Dimensions for
63
CPUID of 681
63
Part Number 27648 OPGA Package Dimensions for
65
CPUID of 681
65
11 Pin Descriptions
67
Pin Diagram and Pin Name Abbreviations
67
Pin List
77
Detailed Pin Descriptions
86
A20M# Pin
86
AMD Pin
86
AMD Athlon System Bus Pins
86
Analog Pin
86
APIC Pins, PICCLK, PICD[1:0]
86
CLKFWDRST Pin
86
CLKIN, RSTCLK (SYSCLK) Pins
86
CONNECT Pin
87
COREFB and COREFB# Pins
87
CPU_PRESENCE# Pin
87
DBRDY and DBREQ# Pins
87
FERR Pin
87
FID[3:0] Pins
87
Fsb_Sense[1:0] Pins
89
FLUSH# Pin
89
IGNNE# Pin
89
INIT# Pin
89
INTR Pin
89
JTAG Pins
89
K7CLKOUT and K7CLKOUT# Pins
90
Key Pins
90
NC Pins
90
NMI Pin
90
PGA Orientation Pins
90
PLL Bypass and Test Pins
90
PWROK Pin
90
SADDIN[1:0]# and SADDOUT[1:0]# Pins
91
Scan Pins
91
SMI# Pin
91
STPCLK# Pin
91
SYSCLK and SYSCLK
91
THERMDA and THERMDC Pins
91
VCCA Pin
91
VID[4:0] Pins
91
VREFSYS Pin
92
ZN and ZP Pins
92
12 Ordering Information
93
Standard AMD Athlon XP Processor Model 8 Products
93
Appendix A
95
Ideal Diode Equation
95
Temperature Offset Correction
96
Appendix A Thermal Diode Calculations
95
Appendix B Conventions and Abbreviations
99
Signals and Bits
99
Data Terminology
100
Abbreviations and Acronyms
101
Related Publications
105
4
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AMD ATHLON 8 Specifications
General
Brand
AMD
Model
ATHLON 8
Category
Computer Hardware
Language
English
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