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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
v
5.6 KEYBOARD/POINTING DEVICE INTERFACE................................................................... 5-16
5.6.1 KEYBOARD INTERFACE OPERATION....................................................................... 5-16
5.6.2 POINTING DEVICE INTERFACE OPERATION .......................................................... 5-18
5.6.3 KEYBOARD/POINTING DEVICE INTERFACE PROGRAMMING........................... 5-18
5.6.4 KEYBOARD/POINTING DEVICE INTERFACE CONNECTOR.................................. 5-21
5.7 UNIVERSAL SERIAL BUS INTERFACE .............................................................................. 5-22
5.7.1 USB DATA FORMATS.................................................................................................... 5-22
5.7.2 USB PROGRAMMING.................................................................................................... 5-24
5.7.3 USB CONNECTOR.......................................................................................................... 5-25
5.7.4 USB CABLE DATA ......................................................................................................... 5-25
5.8 AUDIO SUBSYSTEM..............................................................................................................5-26
5.8.1 FUNCTIONAL ANALYSIS ............................................................................................. 5-26
5.8.2 AUDIO CONTROLLER................................................................................................... 5-28
5.8.3 AC97 LINK BUS ..............................................................................................................5-29
5.8.4 AUDIO CODEC................................................................................................................5-30
5.8.5 AUDIO PROGRAMMING ............................................................................................... 5-31
5.8.6 AUDIO SPECIFICATIONS.............................................................................................. 5-32
5.9 NETWORK SUPPORT............................................................................................................. 5-33
5.9.1 PCI VER. 2.2 SUPPORT .................................................................................................. 5-33
5.9.2 ALERT-ON-LAN SUPPORT ........................................................................................... 5-33
5.9.3 REMOTE SYSTEM ALERT SUPPORT.......................................................................... 5-35
CHAPTER 6 POWER SUPPLY AND DISTRIBUTION ..........................................................................
6.1 INTRODUCTION....................................................................................................................... 6-1
6.2 POWER SUPPLY ASSEMBLY/CONTROL .............................................................................6-1
6.2.1 POWER SUPPLY ASSEMBLY ......................................................................................... 6-2
6.2.2 POWER CONTROL ........................................................................................................... 6-3
6.3 POWER DISTRIBUTION .......................................................................................................... 6-5
6.3.1 3.3/5/12 VDC DISTRIBUTION.......................................................................................... 6-5
6.3.2 LOW VOLTAGE PRODUCTION/DISTRIBUTION......................................................... 6-6
6.4 SIGNAL DISTRIBUTION..........................................................................................................6-7
CHAPTER 7 BIOS ROM .............................................................................................................................
7.1 INTRODUCTION....................................................................................................................... 7-1
7.2 ROM FLASHING .......................................................................................................................7-2
7.2.1 UPGRADING...................................................................................................................... 7-2
7.2.2 CHANGEABLE SPLASH SCREEN .................................................................................. 7-3
7.3 BOOT FUNCTIONS................................................................................................................... 7-4
7.3.1 BOOT DEVICE ORDER .................................................................................................... 7-4
7.3.2 NETWORK BOOT (F12) SUPPORT................................................................................. 7-4
7.3.3 MEMORY DETECTION AND CONFIGURATION......................................................... 7-5
7.3.4 BOOT ERROR CODES...................................................................................................... 7-5
7.4 SETUP UTILITY........................................................................................................................7-6
7.5 CLIENT MANAGEMENT FUNCTIONS................................................................................ 7-12
7.5.1 SYSTEM ID AND ROM TYPE........................................................................................ 7-14
7.5.2 EDID RETRIEVE ............................................................................................................. 7-14
7.5.3 TEMPERATURE STATUS .............................................................................................. 7-14
7.5.4 DRIVE FAULT PREDICTION......................................................................................... 7-15
7.6 PNP SUPPORT ......................................................................................................................... 7-15
7.6.1 SMBIOS ............................................................................................................................ 7-16