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Technical Reference Guide
Compaq Deskpro EXS and Workstation 300 Personal Computers
Featuring the Intel Pentium 4 Processor
First Edition - December 2000
iii
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION..................................................................................................................
1.1 ABOUT THIS GUIDE ................................................................................................................ 1-1
1.1.1 USING THIS GUIDE.......................................................................................................... 1-1
1.1.2 ADDITIONAL INFORMATION SOURCES..................................................................... 1-1
1.2 MODEL NUMBERING CONVENTION................................................................................... 1-1
1.3 NOTATIONAL CONVENTIONS..............................................................................................1-2
1.3.1 VALUES ............................................................................................................................. 1-2
1.3.2 RANGES ............................................................................................................................. 1-2
1.3.3 SIGNAL LABELS............................................................................................................... 1-2
1.3.4 REGISTER NOTATION AND USAGE............................................................................. 1-2
1.3.5 BIT NOTATION................................................................................................................. 1-2
1.4 COMMON ACRONYMS AND ABBREVIATIONS................................................................. 1-3
CHAPTER 2 SYSTEM OVERVIEW..........................................................................................................
2.1 INTRODUCTION....................................................................................................................... 2-1
2.2 FEATURES AND OPTIONS...................................................................................................... 2-2
2.2.1 STANDARD FEATURES................................................................................................... 2-2
2.2.2 OPTIONS ............................................................................................................................ 2-3
2.3 MECHANICAL DESIGN ........................................................................................................... 2-4
2.3.1 CABINET LAYOUTS ........................................................................................................ 2-4
2.3.2 CHASSIS LAYOUT............................................................................................................ 2-6
2.3.3 BOARD LAYOUT.............................................................................................................. 2-7
2.4 SYSTEM ARCHITECTURE...................................................................................................... 2-8
2.4.1 PENTIUM 4 PROCESSOR............................................................................................... 2-10
2.4.2 CHIPSET........................................................................................................................... 2-11
2.4.3 SUPPORT COMPONENTS.............................................................................................. 2-11
2.4.4 SYSTEM MEMORY......................................................................................................... 2-12
2.4.5 MASS STORAGE............................................................................................................. 2-12
2.4.6 SERIAL, PARALLEL INTERFACES .............................................................................. 2-12
2.4.7 UNIVERSAL SERIAL BUS INTERFACE ...................................................................... 2-12
2.4.8 GRAPHICS SUBSYSTEM ............................................................................................... 2-13
2.4.9 AUDIO SUBSYSTEM...................................................................................................... 2-14
2.5 SPECIFICATIONS ................................................................................................................... 2-14
CHAPTER 3 PROCESSOR/MEMORY SUBSYSTEM ............................................................................
3.1 INTRODUCTION....................................................................................................................... 3-1
3.2 PENTIUM 4 PROCESSOR......................................................................................................... 3-2
3.2.1 PROCESSOR OVERVIEW ................................................................................................ 3-2
3.2.2 PROCESSOR UPGRADING.............................................................................................. 3-4
3.3 MEMORY SUBSYSTEM........................................................................................................... 3-5
3.3.1 RAMBUS ATTRIBUTES...................................................................................................3-6
3.3.2 RAMBUS CHANNEL TRANSACTIONS .........................................................................3-7
3.3.3 RDRAM POWER MANAGEMENT.................................................................................. 3-8
3.3.4 RDRAM CONFIGURATION/CONTROL ......................................................................... 3-8
3.4 SUBSYSTEM CONFIGURATION..........................................................................................3-10