HP D315 User Manual
Page 8
Technical Reference Guide
CHAPTER 3 PROCESSOR/MEMORY SUBSYSTEM.............................................................................
3.1
INTRODUCTION....................................................................................................................... 3-1
3.2
ATHLON
XP
PROCESSOR ....................................................................................................... 3-2
3.2.1
PROCESSOR OVERVIEW ................................................................................................ 3-2
3.2.2
PROCESSOR UPGRADING.............................................................................................. 3-4
3.3
MEMORY
SUBSYSTEM........................................................................................................... 3-5
CHAPTER 4 SYSTEM SUPPORT ..............................................................................................................
4.1
INTRODUCTION....................................................................................................................... 4-1
4.2
PCI
BUS
OVERVIEW ................................................................................................................ 4-2
4.2.1
PCI BUS TRANSACTIONS............................................................................................... 4-3
4.2.2
PCI BUS MASTER ARBITRATION ................................................................................. 4-6
4.2.3
OPTION ROM MAPPING ................................................................................................. 4-7
4.2.4
PCI INTERRUPTS.............................................................................................................. 4-7
4.2.5
PCI POWER MANAGEMENT SUPPORT........................................................................ 4-7
4.2.6
PCI SUB-BUSSES .............................................................................................................. 4-7
4.2.7
PCI CONNECTOR ............................................................................................................. 4-8
4.3
AGP
BUS
OVERVIEW .............................................................................................................. 4-9
4.3.1
BUS TRANSACTIONS...................................................................................................... 4-9
4.3.2
AGP CONNECTOR.......................................................................................................... 4-13
4.4
SYSTEM
RESOURCES ........................................................................................................... 4-14
4.4.1
INTERRUPTS................................................................................................................... 4-14
4.4.2
DIRECT MEMORY ACCESS.......................................................................................... 4-18
4.5
SYSTEM
CLOCK
DISTRIBUTION ........................................................................................ 4-21
4.6
REAL-TIME
CLOCK
AND
CONFIGURATION
MEMORY.................................................. 4-22
4.6.1
CLEARING CMOS........................................................................................................... 4-22
4.6.2
CMOS ARCHIVE AND RESTORE................................................................................. 4-23
4.6.3
STANDARD CMOS LOCATIONS ................................................................................. 4-23
4.7
SYSTEM
MANAGEMENT...................................................................................................... 4-24
4.7.1
SECURITY FUNCTIONS ................................................................................................ 4-24
4.7.2
POWER MANAGEMENT ............................................................................................... 4-26
4.7.3
SYSTEM STATUS ........................................................................................................... 4-26
4.7.4
THERMAL SENSING AND COOLING ......................................................................... 4-27
4.8
REGISTER
MAP
AND
MISCELLANEOUS
FUNCTIONS .................................................... 4-30
4.8.1
SYSTEM I/O MAP ........................................................................................................... 4-30
4.8.2
LPC47B367 I/O CONTROLLER FUNCTIONS .............................................................. 4-31
Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor
Second Edition –- April 2003
iv