HP Deskpro EX Technical Reference Manual page 11

5.5 PARALLEL INTERFACE.........................................................................................................5-10
5.5.1 STANDARD PARALLEL PORT MODE .........................................................................5-10
5.5.2 ENHANCED PARALLEL PORT MODE.........................................................................5-11
5.5.3 EXTENDED CAPABILITIES PORT MODE...................................................................5-11
5.5.4 PARALLEL INTERFACE PROGRAMMING .................................................................5-11
5.5.5 PARALLEL INTERFACE CONNECTOR .......................................................................5-13
5.6 KEYBOARD/POINTING DEVICE INTERFACE ...................................................................5-14
5.6.1 KEYBOARD INTERFACE OPERATION .......................................................................5-14
5.6.2 POINTING DEVICE INTERFACE OPERATION...........................................................5-16
5.6.3 KEYBOARD/POINTING DEVICE INTERFACE PROGRAMMING ...........................5-16
5.6.4 KEYBOARD/POINTING DEVICE INTERFACE CONNECTOR ..................................5-19
5.7 UNIVERSAL SERIAL BUS INTERFACE...............................................................................5-20
5.7.1 USB DATA FORMATS ....................................................................................................5-20
5.7.2 USB PROGRAMMING.....................................................................................................5-22
5.7.3 USB CONNECTOR ..........................................................................................................5-23
5.7.4 USB CABLE DATA..........................................................................................................5-23
5.8 AUDIO SUBSYSTEM ..............................................................................................................5-24
5.8.1 FUNCTIONAL ANALYSIS..............................................................................................5-24
5.8.2 AC97 AUDIO CONTROLLER .........................................................................................5-26
5.8.3 AC97 LINK BUS...............................................................................................................5-26
5.8.4 AUDIO CODEC ................................................................................................................5-27
5.8.5 AUDIO PROGRAMMING................................................................................................5-28
5.8.6 AUDIO SPECIFICATIONS ..............................................................................................5-29
5.9 NETWORK SUPPORT .............................................................................................................5-30
5.9.1 PCI VER. 2.2 SUPPORT...................................................................................................5-30
5.9.2 ALERT-ON-LAN SUPPORT............................................................................................5-30
5.9.3 REMOTE SYSTEM ALERT SUPPORT ..........................................................................5-32
CHAPTER 6 EMBEDDED GRAPHICS SUBSYSTEM ............................................................................
6.1 INTRODUCTION .......................................................................................................................6-1
6.1.1 FEATURE SUMMARY ......................................................................................................6-1
6.2 815-BASED GRAPHICS FUNCTIONAL DESCRIPTION........................................................6-2
6.2.1 DISPLAY MODES..............................................................................................................6-4
6.3 815-BASED GRAPHICS PROGRAMMING .............................................................................6-5
6.4 MONITOR POWER MANAGEMENT CONTROL...................................................................6-5
6.5 MONITOR CONNECTOR..........................................................................................................6-6
6.6 UPGRADING 815-BASED GRAPHICS ....................................................................................6-6
CHAPTER 7 POWER SUPPLY AND DISTRIBUTION...........................................................................
7.1 INTRODUCTION .......................................................................................................................7-1
7.1 POWER SUPPLY ASSEMBLY/CONTROL..............................................................................7-1
7.1.1 POWER SUPPLY ASSEMBLY..........................................................................................7-2
7.1.2 POWER CONTROL............................................................................................................7-3
7.2 POWER DISTRIBUTION...........................................................................................................7-5
7.2.1 3.3/5/12 VDC DISTRIBUTION ..........................................................................................7-5
7.2.2 LOW VOLTAGE DISTRIBUTION....................................................................................7-7
7.3 SIGNAL DISTRIBUTION ..........................................................................................................7-8
Compaq Deskpro EX Series of Personal Computers
First Edition - August 2000
Technical Reference Guide
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