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Technical Reference Guide
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Technical Reference Guide
For the
Compaq iPAQ Series of Desktop Personal Computers
Second Edition February 2001
Document Number 127M-0300B-WWEN
Compaq iPAQ Series of Desktop Personal Computers i
Second Edition - February 2001
Technical Reference Guide
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Technical Reference Guide
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION...................................................................................................................
1.1 ABOUT THIS GUIDE ................................................................................................................ 1-1
1.1.1 USING THIS GUIDE.......................................................................................................... 1-1
1.2 ADDITIONAL INFORMATION SOURCES............................................................................. 1-2
1.3 MODEL NUMBERING CONVENTION................................................................................... 1-2
1.4 SERIAL NUMBER ..................................................................................................................... 1-2
1.5 NOTATIONAL CONVENTIONS .............................................................................................. 1-3
1.5.1 VALUES ............................................................................................................................. 1-3
1.5.2 RANGES ............................................................................................................................. 1-3
1.5.3 REGISTER NOTATION AND USAGE............................................................................. 1-3
1.5.4 BIT NOTATION AND BYTE VALUES............................................................................ 1-3
1.6 COMMON ACRONYMS AND ABBREVIATIONS ................................................................. 1-4
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 LAYOUTS ......................................................................................................... 2-6
2.3.3 SYSTEM BOARD LAYOUTS ........................................................................................... 2-8
2.4 SYSTEM ARCHITECTURE .................................................................................................... 2-10
2.4.1 IPAQ 1.0/1.2 ARCHITECTURE....................................................................................... 2-10
2.4.2 IPAQ 2.0 ARCHITECTURE............................................................................................. 2-12
2.4.3 PROCESSORS .................................................................................................................. 2-14
2.4.4 CHIPSET ........................................................................................................................... 2-16
2.4.5 SUPPORT COMPONENTS.............................................................................................. 2-17
2.4.6 SYSTEM MEMORY......................................................................................................... 2-17
2.4.7 MASS STORAGE ............................................................................................................. 2-18
2.4.8 SERIAL AND PARALLEL INTERFACES...................................................................... 2-18
2.4.9 UNIVERSAL SERIAL BUS INTERFACE ...................................................................... 2-18
2.4.10 GRAPHICS SUBSYSTEM ............................................................................................... 2-18
2.4.11 AUDIO SUBSYSTEM...................................................................................................... 2-19
2.5 SPECIFICATIONS ................................................................................................................... 2-19
CHAPTER 3 PROCESSOR/MEMORY SUBSYSTEM .............................................................................
3.1 INTRODUCTION ....................................................................................................................... 3-1
3.2 PROCESSOR .............................................................................................................................. 3-2
3.2.1 CELERON PROCESSOR ................................................................................................... 3-2
3.2.2 PENTIUM III PROCESSOR............................................................................................... 3-3
3.2.3 PROCESSOR UPGRADING .............................................................................................. 3-4
3.3 MEMORY SUBSYSTEM........................................................................................................... 3-5
3.4 SUBSYSTEM CONFIGURATION ............................................................................................ 3-8
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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 SUB-BUSSES .............................................................................................................. 4-5
4.2.3 PCI CONFIGURATION ..................................................................................................... 4-6
4.3 SYSTEM RESOURCES ............................................................................................................. 4-7
4.3.1 INTERRUPTS ..................................................................................................................... 4-7
4.3.2 DIRECT MEMORY ACCESS .......................................................................................... 4-10
4.4 SYSTEM CLOCK DISTRIBUTION ........................................................................................ 4-11
4.5 REAL-TIME CLOCK AND CONFIGURATION MEMORY ................................................. 4-11
4.5.1 CLEARING CMOS........................................................................................................... 4-12
4.5.2 CMOS ARCHIVE AND RESTORE ................................................................................. 4-12
4.5.3 STANDARD CMOS LOCATIONS .................................................................................. 4-13
4.6 SYSTEM MANAGEMENT...................................................................................................... 4-22
4.6.1 SECURITY FUNCTIONS ................................................................................................ 4-22
4.6.2 POWER MANAGEMENT................................................................................................ 4-23
4.6.3 SYSTEM STATUS ........................................................................................................... 4-24
4.6.4 TEMPERATURE SENSING AND COOLING ................................................................ 4-25
4.7 REGISTER MAP AND MISCELLANEOUS FUNCTIONS.................................................... 4-26
4.7.1 SYSTEM I/O MAP ........................................................................................................... 4-26
4.7.2 82801 ICH GENERAL PURPOSE FUNCTIONS ............................................................ 4-27
4.7.3 I/O CONTROLLER FUNCTIONS .................................................................................. 4-28
4.7.4 820802 FWH FUNCTIONS .............................................................................................. 4-30
CHAPTER 5 INPUT/OUTPUT INTERFACES ..........................................................................................
5.1 INTRODUCTION ....................................................................................................................... 5-1
5.2 ENHANCED IDE INTERFACE................................................................................................. 5-1
5.2.1 IDE PROGRAMMING ....................................................................................................... 5-1
5.2.2 PRIMARY IDE INTERFACE............................................................................................. 5-3
5.2.3 SECONDARY IDE INTERFACE....................................................................................... 5-4
5.3 DISKETTE DRIVE INTERFACE .............................................................................................. 5-5
5.4 SERIAL INTERFACE ................................................................................................................ 5-6
5.4.1 RS-232 INTERFACE .......................................................................................................... 5-6
5.4.2 SERIAL TEST INTERFACE............................................................................................. 5-7
5.4.3 SERIAL INTERFACE PROGRAMMING ......................................................................... 5-7
5.5 PARALLEL INTERFACE .......................................................................................................... 5-9
5.5.1 STANDARD PARALLEL PORT MODE........................................................................... 5-9
5.5.2 ENHANCED PARALLEL PORT MODE .......................................................................... 5-9
5.5.3 EXTENDED CAPABILITIES PORT MODE .................................................................. 5-10
5.5.4 PARALLEL INTERFACE PROGRAMMING ................................................................. 5-10
5.5.5 PARALLEL INTERFACE CONNECTOR ....................................................................... 5-14
5.6 KEYBOARD/POINTING DEVICE INTERFACE................................................................... 5-15
5.6.1 KEYBOARD INTERFACE OPERATION....................................................................... 5-15
5.6.2 POINTING DEVICE INTERFACE OPERATION .......................................................... 5-17
5.6.3 KEYBOARD/POINTING DEVICE INTERFACE PROGRAMMING........................... 5-17
5.6.4 KEYBOARD/POINTING DEVICE INTERFACE CONNECTOR.................................. 5-21
5.7 UNIVERSAL SERIAL BUS INTERFACE .............................................................................. 5-22
5.7.1 USB DATA FORMATS.................................................................................................... 5-23
5.7.2 USB PROGRAMMING .................................................................................................... 5-24
5.7.3 USB CONNECTOR .......................................................................................................... 5-25
5.7.4 USB CABLE DATA ......................................................................................................... 5-25
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5.8 AUDIO SUBSYSTEM.............................................................................................................. 5-26
5.8.1 FUNCTIONAL ANALYSIS ............................................................................................. 5-26
5.8.2 AC97 AUDIO CONTROLLER......................................................................................... 5-28
5.8.3 AC97 LINK BUS .............................................................................................................. 5-28
5.8.4 AUDIO CODEC................................................................................................................ 5-29
5.8.5 AUDIO PROGRAMMING ............................................................................................... 5-30
5.8.6 AUDIO SPECIFICATIONS.............................................................................................. 5-31
5.9 NETWORK INTERFACE CONTROLLER ............................................................................. 5-32
5.9.1 WAKE ON LAN ............................................................................................................... 5-33
5.9.2 ALERT ON LAN............................................................................................................... 5-33
5.9.3 POWER MANAGEMENT SUPPORT ............................................................................. 5-34
5.9.4 NIC PROGRAMMING ..................................................................................................... 5-35
CHAPTER 6 GRAPHICS SUBSYSTEM.....................................................................................................
6.1 INTRODUCTION ....................................................................................................................... 6-1
6.1.1 FEATURE SUMMARY...................................................................................................... 6-1
6.2 FUNCTIONAL DESCRIPTION................................................................................................. 6-2
6.2.1 DISPLAY MODES ............................................................................................................. 6-4
6.3 PROGRAMMING ....................................................................................................................... 6-5
6.4 MONITOR POWER MANAGEMENT CONTROL .................................................................. 6-5
6.5 MONITOR CONNECTOR ......................................................................................................... 6-6
6.6 UPGRADING GRAPHICS ......................................................................................................... 6-6
CHAPTER 7 POWER SUPPLY AND DISTRIBUTION ...........................................................................
7.1 INTRODUCTION ....................................................................................................................... 7-1
7.2 POWER SUPPLY ASSEMBLY/CONTROL ............................................................................. 7-1
7.2.1 POWER SUPPLY ASSEMBLY ......................................................................................... 7-2
7.2.2 POWER CONTROL ........................................................................................................... 7-3
7.3 POWER DISTRIBUTION .......................................................................................................... 7-4
7.3.1 3.3/5/12 VDC DISTRIBUTION.......................................................................................... 7-4
7.3.2 LOW VOLTAGE DISTRIBUTION ................................................................................... 7-6
7.4 SIGNAL DISTRIBUTION.......................................................................................................... 7-7
CHAPTER 8 BIOS ROM ..............................................................................................................................
8.1 INTRODUCTION ....................................................................................................................... 8-1
8.2 IPAQ 2.0 FEATURES................................................................................................................. 8-2
8.3 DESKTOP MANAGEMENT SUPPORT ................................................................................... 8-3
8.3.1 SYSTEM ID ........................................................................................................................ 8-4
8.3.2 EDID RETRIEVE ............................................................................................................... 8-5
8.3.3 DRIVE FAULT PREDICTION........................................................................................... 8-5
8.3.4 SYSTEM MAP RETRIEVAL............................................................................................. 8-6
8.3.5 FLASH ROM FUNCTIONS ............................................................................................... 8-7
8.3.6 POWER BUTTON FUNCTIONS....................................................................................... 8-7
8.3.7 ACCESSING CMOS........................................................................................................... 8-8
8.3.8 ACCESSING CMOS FEATURE BITS .............................................................................. 8-8
8.3.9 SECURITY FUNCTIONS ................................................................................................ 8-10
8.4 MEMORY DETECTION AND CONFIGURATION............................................................... 8-11
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8.5 PNP SUPPORT ......................................................................................................................... 8-12
8.5.1 SMBIOS ............................................................................................................................ 8-13
8.6 POWER MANAGEMENT FUNCTIONS ................................................................................ 8-14
8.6.1 INDEPENDENT PM SUPPORT ...................................................................................... 8-14
8.6.2 ACPI SUPPORT................................................................................................................ 8-15
8.6.3 APM 1.2 SUPPORT .......................................................................................................... 8-15
8.7 USB LEGACY SUPPORT........................................................................................................ 8-17
8.8 BIOS UPGRADING.................................................................................................................. 8-18
APPENDIX A ERROR MESSAGES AND CODES....................................................................................
A.1 INTRODUCTION .......................................................................................................................A-1
A.2 BEEP/KEYBOARD LED CODES..............................................................................................A-1
A.3 POWER-ON SELF TEST (POST) MESSAGES ........................................................................A-2
A.4 SYSTEM ERROR MESSAGES (1XX-XX) .................................................................................A-3
A.5. MEMORY ERROR MESSAGES (2XX-XX) ...............................................................................A-4
A.6 KEYBOARD ERROR MESSAGES (30X-XX) ...........................................................................A-4
A.7 PRINTER ERROR MESSAGES (4XX-XX).................................................................................A-5
A.8 VIDEO (GRAPHICS) ERROR MESSAGES (5XX-XX)..............................................................A-5
A.9 DISKETTE DRIVE ERROR MESSAGES (6XX-XX) .................................................................A-6
A.10 SERIAL INTERFACE ERROR MESSAGES (11XX-XX)...........................................................A-6
A.11 MODEM COMMUNICATIONS ERROR MESSAGES (12XX-XX) ..........................................A-7
A.12 SYSTEM STATUS ERROR MESSAGES (16XX-XX) ...............................................................A-8
A.13 HARD DRIVE ERROR MESSAGES (17XX-XX).......................................................................A-8
A.14 HARD DRIVE ERROR MESSAGES (19XX-XX).......................................................................A-9
A.15 VIDEO (GRAPHICS) ERROR MESSAGES (24XX-XX)............................................................A-9
A.16 AUDIO ERROR MESSAGES (3206-XX) .................................................................................A-10
A.17 DVD/CD-ROM ERROR MESSAGES (33XX-XX)....................................................................A-10
A.18 NETWORK INTERFACE ERROR MESSAGES (60XX-XX) ..................................................A-10
A.19 SCSI INTERFACE ERROR MESSAGES (65XX-XX, 66XX-XX, 67XX-XX) .............................A-11
A.20 POINTING DEVICE INTERFACE ERROR MESSAGES (8601-XX).....................................A-11
APPENDIX B ASCII CHARACTER SET...................................................................................................
B .1 INTRODUCTION ....................................................................................................................... B-1
APPENDIX C KEYBOARD..........................................................................................................................
C.1 INTRODUCTION ....................................................................................................................... C-1
C.2 KEYSTROKE PROCESSING .................................................................................................... C-2
C.2.1 PS/2-TYPE KEYBOARD TRANSMISSIONS...................................................................C-3
C.2.2 USB-TYPE KEYBOARD TRANSMISSIONS...................................................................C-4
C.2.3 KEYBOARD LAYOUTS....................................................................................................C-5
C.2.4 KEYS ................................................................................................................................... C-8
C.2.5 KEYBOARD COMMANDS.............................................................................................C-11
C.2.6 SCAN CODES...................................................................................................................C-11
C.3 CONNECTORS......................................................................................................................... C-16
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LIST OF FIGURES
FIGURE 21. COMPAQ IPAQ DESKTOP PERSONAL COMPUTERS................................................................. 2-1
FIGURE 22. COMPAQ IPAQ DESKTOPS, FRONT VIEWS............................................................................. 2-4
FIGURE 23. COMPAQ IPAQ DESKTOPS, REAR VIEWS............................................................................... 2-5
FIGURE 24. COMPAQ IPAQ 1.0/1.2 DESKTOP CHASSIS LAYOUT .............................................................. 2-6
FIGURE 25. COMPAQ IPAQ 2.0 CHASSIS LAYOUT.................................................................................... 2-7
FIGURE 26. COMPAQ IPAQ 1.0/1.2 SYSTEM BOARD LAYOUTS ................................................................ 2-8
FIGURE 27. COMPAQ IPAQ 2.0 SYSTEM BOARD LAYOUT........................................................................ 2-9
FIGURE 28. COMPAQ IPAQ 1.0/1.2 ARCHITECTURE, BLOCK DIAGRAM ................................................... 2-11
FIGURE 29. COMPAQ IPAQ 2.0 ARCHITECTURE, BLOCK DIAGRAM ......................................................... 2-13
FIGURE 210. PROCESSOR ASSEMBLY AND MOUNTING ........................................................................... 2-15
FIGURE 31. PROCESSOR/MEMORY SUBSYSTEM ARCHITECTURE .............................................................. 3-1
FIGURE 32. CELERON PROCESSOR INTERNAL ARCHITECTURE ................................................................. 3-2
FIGURE 33. PENTIUM III PROCESSOR INTERNAL ARCHITECTURE ............................................................. 3-3
FIGURE 34. SYSTEM MEMORY MAP ......................................................................................................... 3-7
FIGURE 4-1. PCI BUS DEVICES AND FUNCTIONS......................................................................................... 4-2
FIGURE 4-2. CONFIGURATION CYCLE ......................................................................................................... 4-4
FIGURE 4-3. PCI CONFIGURATION SPACE MAPPING................................................................................... 4-5
FIGURE 4-4. MASKABLE INTERRUPT PROCESSING, BLOCK DIAGRAM ........................................................ 4-7
FIGURE 4-5. CONFIGURATION MEMORY MAP........................................................................................... 4-11
FIGURE 5-1. 40-PIN PRIMARY IDE CONNECTOR (ON SYSTEM BOARD). ...................................................... 5-3
FIGURE 5-2. 68-PIN MULTIBAY CONNECTOR (ON MULTIBAY BOARD). ....................................................... 5-4
FIGURE 5-3. SERIAL INTERFACE CONNECTOR (MALE DB-9 AS VIEWED FROM REAR OF CHASSIS)............... 5-6
FIGURE 5-4. SERIAL INTERFACE HEADER (IPAQ 1.2 LEGACY-FREE AND 2.0 SYSTEM BOARDS ONLY) ........ 5-7
FIGURE 5-5. PARALLEL INTERFACE CONNECTOR (FEMALE DB-25 AS VIEWED FROM REAR OF CHASSIS) .. 5-14
FIGURE 5-6. 8042-TO-KEYBOARD TRANSMISSION OF CODE EDH, TIMING DIAGRAM .............................. 5-15
FIGURE 5-7. KEYBOARD OR POINTING DEVICE INTERFACE CONNECTOR .................................................. 5-21
FIGURE 5-8. USB I/F, BLOCK DIAGRAM................................................................................................... 5-22
FIGURE 5-9. USB PACKET FORMATS........................................................................................................ 5-23
FIGURE 5-10. UNIVERSAL SERIAL BUS CONNECTOR................................................................................. 5-25
FIGURE 5-11. AUDIO SUBSYSTEM FUNCTIONAL BLOCK DIAGRAM ........................................................... 5-27
FIGURE 5-12. AC'97 LINK BUS PROTOCOL .............................................................................................. 5-28
FIGURE 5-13. AD1881 OR AD1885 AUDIO CODEC FUNCTIONAL BLOCK DIAGRAM................................. 5-29
FIGURE 5-14. NETWORK INTERFACE CONTROLLER BLOCK DIAGRAM ...................................................... 5-32
FIGURE 5-15. ETHERNET TPE CONNECTOR (RJ-45, VIEWED FROM CARD EDGE)...................................... 5-36
FIGURE 6-1. GRAPHICS SUBSYSTEM, BLOCK DIAGRAM .............................................................................. 6-2
FIGURE 6-2. GMCH INTEGRATED GRAPHICS SUBSYSTEM ......................................................................... 6-3
FIGURE 71. POWER DISTRIBUTION AND CONTROL, BLOCK DIAGRAM....................................................... 7-1
FIGURE 72. IPAQ 1.0/1.2 POWER CABLE DIAGRAM................................................................................. 7-4
FIGURE 73. IPAQ 2.0 POWER CABLE DIAGRAM....................................................................................... 7-5
FIGURE 74. IPAQ 1.0/1.2 SIGNAL DISTRIBUTION DIAGRAM ..................................................................... 7-7
FIGURE 75. IPAQ 2.0 SIGNAL DISTRIBUTION DIAGRAM ........................................................................... 7-8
FIGURE 76. SYSTEM BOARD HEADER PINOUTS ........................................................................................ 7-9
FIGURE B1. ASCII CHARACTER SET........................................................................................................B-1
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FIGURE C1. KEYSTROKE PROCESSING ELEMENTS, BLOCK DIAGRAM ...................................................... C-2
FIGURE C2. PS/2 KEYBOARD-TO-SYSTEM TRANSMISSION, TIMING DIAGRAM ........................................ C-3
FIGURE C3. U.S. ENGLISH (101-KEY) KEYBOARD KEY POSITIONS..........................................................C-5
FIGURE C4. NATIONAL (102-KEY) KEYBOARD KEY POSITIONS...............................................................C-5
FIGURE C5. U.S. ENGLISH WINDOWS (101W-KEY) KEYBOARD KEY POSITIONS.....................................C-6
FIGURE C6. NATIONAL WINDOWS (102W-KEY) KEYBOARD KEY POSITIONS .......................................... C-6
FIGURE C7. 7-BUTTON EASY ACCESS KEYBOARD LAYOUT.....................................................................C-7
FIGURE C8. 8-BUTTON EASY ACCESS KEYBOARD LAYOUT.....................................................................C-7
FIGURE C9. PS/2 KEYBOARD CABLE CONNECTOR (MALE)....................................................................C-16
FIGURE C10. USB KEYBOARD CABLE CONNECTOR (MALE) ................................................................. C-16
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LIST OF TABLES
TABLE 11. ACRONYMS AND ABBREVIATIONS .......................................................................................... 1-4
TABLE 2-1. IPAQ STANDARD FEATURE DIFFERENCE MATRIX................................................................... 2-3
TABLE 2-2. IPAQ 1.0/1.2 ARCHITECTURAL COMPARISON ......................................................................... 2-10
TABLE 2-3. CHIPSET FUNCTIONS.............................................................................................................. 2-16
TABLE 2-4. SUPPORT COMPONENT FUNCTIONS........................................................................................ 2-17
TABLE 2-5. ENVIRONMENTAL SPECIFICATIONS ........................................................................................ 2-19
TABLE 2-6. ELECTRICAL SPECIFICATIONS ................................................................................................ 2-19
TABLE 2-7. PHYSICAL SPECIFICATIONS .................................................................................................... 2-20
TABLE 2-8. MULTIBAY 24X CD-ROM DRIVE SPECIFICATIONS ............................................................... 2-20
TABLE 2-9. MULTIBAY 24X CD-ROM DRIVE SPECIFICATIONS ............................................................... 2-21
TABLE 2-10. HARD DRIVE SPECIFICATIONS ............................................................................................. 2-21
TABLE 31. CELERON PROCESSOR STATISTICAL COMPARISON.................................................................. 3-2
TABLE 32. PENTIUM III PROCESSOR STATISTICAL COMPARISON ............................................................. 3-3
TABLE 33. SPD ADDRESS MAP (SDRAM DIMM) .................................................................................... 3-6
TABLE 34. HOST/PCI BRIDGE CONFIGURATION REGISTERS (GMCH, FUNCTION 0) ................................. 3-8
TABLE 4-1. PCI DEVICE CONFIGURATION ACCESS DATA .......................................................................... 4-4
TABLE 4-2. LPC BRIDGE CONFIGURATION REGISTERS (ICH, FUNCTION 0) ................................................ 4-6
TABLE 4-3. MASKABLE INTERRUPT PRIORITIES AND ASSIGNMENTS .......................................................... 4-8
TABLE 4-4. MASKABLE INTERRUPT CONTROL REGISTERS ......................................................................... 4-8
TABLE 4-5. DEFAULT DMA CHANNEL ASSIGNMENTS AND REGISTER I/O PORTS ................................... 4-10
TABLE 4-6. CLOCK GENERATION AND DISTRIBUTION .............................................................................. 4-11
TABLE 4-7. CONFIGURATION MEMORY (CMOS) MAP............................................................................. 4-13
TABLE 4-8. IPAQ 2.0 SYSTEM BOOT/ROM FLASH STATUS LED INDICATIONS........................................ 4-24
TABLE 4-9. SYSTEM STATUS LED INDICATIONS ....................................................................................... 4-24
TABLE 4-10. SYSTEM I/O MAP ................................................................................................................ 4-26
TABLE 4-11. 82801 ICH GPIO REGISTER UTILIZATION............................................................................ 4-27
TABLE 4-12 I/O CONTROLLER CONTROL REGISTERS ................................................................................ 4-28
TABLE 4-13. LPC47B357 GPIO REGISTER UTILIZATION (DESKTOP AND MINITOWER ONLY) .................. 4-29
TABLE 4-14. 82802 FWH GPIO REGISTER UTILIZATION.......................................................................... 4-30
TABLE 51. IDE PCI CONFIGURATION REGISTERS .................................................................................... 5-2
TABLE 52. IDE BUS MASTER CONTROL REGISTERS ................................................................................. 5-2
TABLE 53. 40-PIN PRIMARY IDE CONNECTOR PINOUT............................................................................ 5-3
TABLE 54. 68-PIN MULTIBAY CONNECTOR PINOUT ................................................................................. 5-4
TABLE 55. DB-9 SERIAL CONNECTOR PINOUT ......................................................................................... 5-6
TABLE 56. SERIAL INTERFACE CONFIGURATION REGISTERS .................................................................... 5-7
TABLE 57. SERIAL INTERFACE CONTROL REGISTERS ............................................................................... 5-8
TABLE 58. PARALLEL INTERFACE CONFIGURATION REGISTERS ............................................................. 5-10
TABLE 59. PARALLEL INTERFACE CONTROL REGISTERS......................................................................... 5-11
TABLE 510. DB-25 PARALLEL CONNECTOR PINOUT.............................................................................. 5-14
TABLE 511. 8042-TO-KEYBOARD COMMANDS...................................................................................... 5-16
TABLE 512. KEYBOARD INTERFACE CONFIGURATION REGISTERS.......................................................... 5-17
TABLE 513. CPU COMMANDS TO THE 8042.......................................................................................... 5-19
TABLE 514. KEYBOARD/POINTING DEVICE CONNECTOR PINOUT .......................................................... 5-21
TABLE 515. USB INTERFACE CONFIGURATION REGISTERS.................................................................... 5-24
TABLE 516. USB CONTROL REGISTERS ................................................................................................. 5-24
TABLE 517. USB CONNECTOR PINOUT.................................................................................................. 5-25
TABLE 518. USB CABLE LENGTH DATA................................................................................................ 5-25
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TABLE 519. AC'97 AUDIO CONTROLLER PCI CONFIGURATION REGISTERS........................................... 5-30
TABLE 520. AC'97 AUDIO CODEC CONTROL REGISTERS....................................................................... 5-30
TABLE 521. AUDIO SUBSYSTEM SPECIFICATIONS................................................................................... 5-31
TABLE 522. AOL EVENTS...................................................................................................................... 5-33
TABLE 523. NIC CONTROLLER PCI CONFIGURATION REGISTERS.......................................................... 5-35
TABLE 524. NIC CONTROL REGISTERS .................................................................................................. 5-35
TABLE 525. 825XX NIC OPERATING SPECIFICATIONS............................................................................ 5-36
TABLE 6-1. GRAPHICS DISPLAY MODES..................................................................................................... 6-4
TABLE 6-2. GRAPHICS CONTROLLER PCI CONFIGURATION REGISTERS ...................................................... 6-5
TABLE 6-3. MONITOR POWER MANAGEMENT CONDITIONS........................................................................ 6-5
TABLE 6-4. DB-15 MONITOR CONNECTOR PINOUT ................................................................................... 6-6
TABLE 7-1. 90-WATT POWER SUPPLY ASSEMBLY SPECIFICATIONS (IPAQ 1.X)......................................... 7-2
TABLE 7-2. 90-WATT POWER SUPPLY ASSEMBLY SPECIFICATIONS (IPAQ 2.0) ......................................... 7-2
TABLE 8-1. DESKTOP MANAGEMENT FUNCTIONS (INT15) ........................................................................ 8-3
TABLE 8-2. CMOS FEATURE BITS ............................................................................................................. 8-9
TABLE 8-3. PNP BIOS FUNCTIONS .......................................................................................................... 8-12
TABLE 8-4. APM BIOS FUNCTIONS (INT15) .......................................................................................... 8-17
TABLE A1. BEEP/KEYBOARD LED CODES...............................................................................................A-1
TABLE A2. POWER-ON SELF TEST (POST) MESSAGES............................................................................A-2
TABLE A3. SYSTEM ERROR MESSAGES....................................................................................................A-3
TABLE A4. MEMORY ERROR MESSAGES..................................................................................................A-4
TABLE A5. KEYBOARD ERROR MESSAGES ..............................................................................................A-4
TABLE A6. PRINTER ERROR MESSAGES ...................................................................................................A-5
TABLE A7. VIDEO (GRAPHICS) ERROR MESSAGES ..................................................................................A-5
TABLE A8. DISKETTE DRIVE ERROR MESSAGES ......................................................................................A-6
TABLE A9. SERIAL INTERFACE ERROR MESSAGES...................................................................................A-6
TABLE A10. SERIAL INTERFACE ERROR MESSAGES.................................................................................A-7
TABLE A11. SYSTEM STATUS ERROR MESSAGES.....................................................................................A-8
TABLE A12. HARD DRIVE ERROR MESSAGES ..........................................................................................A-8
TABLE A13. HARD DRIVE ERROR MESSAGES ..........................................................................................A-9
TABLE A14. VIDEO (GRAPHICS) ERROR MESSAGES ................................................................................A-9
TABLE A15. AUDIO ERROR MESSAGES ..................................................................................................A-10
TABLE A16. DVD/CD-ROM DRIVE ERROR MESSAGES ........................................................................A-10
TABLE A17. NETWORK INTERFACE ERROR MESSAGES..........................................................................A-10
TABLE A18. SCSI INTERFACE ERROR MESSAGES..................................................................................A-11
TABLE A19. POINTING DEVICE INTERFACE ERROR MESSAGES ..............................................................A-11
TABLE C1. KEYBOARD-TO-SYSTEM COMMANDS...................................................................................C-11
TABLE C2. KEYBOARD SCAN CODES ..................................................................................................... C-12
Compaq iPAQ Series of Desktop Personal Computers
x
Second Edition - February 2001
Technical Reference Guide
Chapter 1
INTRODUCTION
Chapter 1 INTRODUCTION
1.
1.1 ABOUT THIS GUIDE
This guide provides technical information about Compaq iPAQ Desktop Personal Computers. This
document describes in detail the system's design and operation for programmers, engineers,
technicians, and system administrators, as well as end-users wanting detailed information.
1.1.1 USING THIS GUIDE
The chapters of this guide primarily describe the hardware and firmware elements and primarily
deal with the system board and the power supply assembly. The appendices contain general data
such as error codes and information about standard peripheral devices such as keyboards, graphics
cards, and communications adapters.
This guide can be used either as an online document or in hardcopy form.
1.1.1.1 Online Viewing
Online viewing allows for quick navigating and convenient searching through the document. A
color monitor will also allow the user to view the color shading used to highlight differential data.
A softcopy of the latest edition of this guide is available for downloading in .pdf file format at the
URL listed below:
http://www.compaq.com/support/techpubs/technical_reference_guides/index.html
Viewing the file requires a copy of Adobe Acrobat Reader available at no charge from Adobe
Systems, Inc. at the following URL:
http://www.adobe.com
When viewing with Adobe Acrobat Reader, click on the ( ) icon in the tool bar to display
the navigation pane for quick access to any section in the guide.
1.1.1.2 Hardcopy
A hardcopy of this guide may be obtained by printing from the .pdf file. The document is designed
for printing in an 8 x 11-inch format. Note that printing in black and white will lose color
shading properties.
Compaq iPAQ Series of Desktop Personal Computers 1-1
Second Edition February 2001
Chapter 1 Introduction
1 .2 ADDITIONAL INFORMATION SOURCES
For more information on components mentioned in this guide refer to the indicated manufacturers'
documentation, which may be available at the following online sources:
Compaq Computer Corporation: http://www.compaq.com
Intel Corporation: http://www.intel.com
Standard Microsystems Corporation: http://www.smsc.com
Texas Instruments Inc.: http://www.ti.com
USB user group: http://www.usb.org
1 .3 MODEL NUMBERING CONVENTION
The model numbering convention for Compaq iPAQ units is as follows:
iPaqX/XNNN/NNX/N/NNNx
Removable storage: b = CD/CDRW, c = CD, d = DVD, r = CDRW, z = ZIP
Memory (in MB)
OS type: 2 = Windows 2000; 6 = Dual install. Windows NT 4.0 or 2000)
Chipset type (b = 810E, e = 815E)
Hard drive size (in GB)
Processor speed (in MHz)
Processor type: C = Celeron; P = Pentium
Configuration: L = legacy, F or none = legacy-free
1 .4 SERIAL NUMBER
The unit's serial number is located on a sticker placed on the exterior cabinet. The serial number
may also be read with the Compaq Diagnostics or Compaq Insight Manager utilities.
1-2 Compaq iPAQ Series of Desktop Personal Computers
Second Edition February 2001
Technical Reference Guide
1.5 NOTATIONAL CONVENTIONS
The notational guidelines used in this guide are described in the following subsections.
1.5.1 VALUES
Hexadecimal values are indicated by a numerical or alpha-numerical value followed by the letter
"h." Binary values are indicated by a value of ones and zeros followed by the letter "b."
Numerical values that have no succeeding letter can be assumed to be decimal unless otherwise
stated.
1.5.2 RANGES
Ranges or limits for a parameter are shown using the following methods:
Example A: Bits <7..4> = bits 7, 6, 5, and 4.
Example B: IRQ3-7, 9 = IRQ signals 3 through 7, and IRQ signal 9
1.5.3 REGISTER NOTATION AND USAGE
This guide uses standard Intel naming conventions in discussing the microprocessor's (CPU)
internal registers. Registers that are accessed through programmable I/O using an indexing scheme
are indicated using the following format:
03C5.17h
Index port
Data port
In the example above, register 03C5.17h is accessed by writing the index port value 17h to the
index address (03C4h), followed by a write to or a read from port 03C5h.
1.5.4 BIT NOTATION AND BYTE VALUES
Bit designations are labeled between brackets (i.e., "bit <0 >"). Binary values are shown with the
most significant bit (MSb) on the far left, least significant bit (LSb) at the far right. Byte values in
hexadecimal are also shown with the MSB on the left, LSB on the right.
Compaq iPAQ Series of Desktop Personal Computers 1-3
Second Edition February 2001
Chapter 1 Introduction
1 .6 COMMON ACRONYMS AND ABBREVIATIONS
Table 1-1 lists the acronyms and abbreviations used in this guide.
Table 11. Acronyms and Abbreviations
Table 1-1.
Acronyms and Abbreviations
Acronym/Abbreviation Description
A ampere
AC alternating current
ACPI Advanced Configuration and Power Interface
A/D analog-to-digital
AGP Accelerated graphics port
API application programming interface
APIC Advanced Programmable Interrupt Controller
APM advanced power management
AOL Alert-On-LANTM
ASIC application-specific integrated circuit
AT 1) attention (modem commands) 2) 286-based PC architecture
A TA AT attachment (IDE protocol)
A TA P I AT attachment w/packet interface extensions
AVI audio-video interleaved
AVGA Advanced VGA
AW G American Wire Gauge (specification)
BAT Basic assurance test
BCD binary-coded decimal
BIOS basic input/output system
bis second/new revision
BNC Bayonet Neill-Concelman (connector type)
bps or b/s bits per second
BSP Bootstrap processor
B TO Built to order
CAS column address strobe
CD compact disk
CD-ROM compact disk read-only memory
CDS compact disk system
CGA color graphics adapter
Ch Channel, chapter
cm centimeter
CMC cache/memory controller
CMOS complimentary metal-oxide semiconductor (configuration memory)
Cntlr controller
Cntrl control
codec compressor/decompressor
CPQ Compaq
CPU central processing unit
CRIMM Continuity (blank) RIMM
CRT cathode ray tube
CSM Compaq system management / Compaq server management
Continued
1-4 Compaq iPAQ Series of Desktop Personal Computers
Second Edition February 2001
Technical Reference Guide
Table 1-1. Acronyms and Abbreviations Continued
Acronym/Abbreviation Description
DAC digital-to-analog converter
DC direct current
DCH DOS compatibility hole
DDC Display Data Channel
DIMM dual inline memory module
DIN Deutche IndustriNorm (connector type)
DIP dual inline package
DMA direct memory access
DMI Desktop management interface
dpi dots per inch
DRAM dynamic random access memory
DRQ data request
EDID extended display identification data
EDO extended data out (RAM type)
EEPROM electrically eraseable PROM
EGA enhanced graphics adapter
EIA Electronic Industry Association
EISA extended ISA
EPP enhanced parallel port
EIDE enhanced IDE
ESCD Extended System Configuration Data (format)
EV Environmental Variable (data)
ExCA Exchangeable Card Architecture
FIFO first in / first out
FL flag (register)
FM frequency modulation
FPM fast page mode (RAM type)
FPU Floating point unit (numeric or math coprocessor)
FPS Frames per second
ft Foot/feet
GB gigabyte
GMCH Graphics/memory controller hub
GND ground
GPIO general purpose I/O
GPOC general purpose open-collector
GART Graphics address re-mapping table
GUI graphics user interface
h hexadecimal
HW hardware
hex hexadecimal
Hz Hertz (cycles-per-second)
ICH I/O controller hub
IDE integrated drive element
IEEE Institute of Electrical and Electronic Engineers
IF interrupt flag
I/F interface
Continued
Compaq iPAQ Series of Desktop Personal Computers 1-5
Second Edition February 2001
Chapter 1 Introduction
Table 1-1. Acronyms and Abbreviations Continued
Acronym/Abbreviation Description
in inch
INT interrupt
I/O input/output
IPL initial program loader
IrDA InfraRed Data Association
IRQ interrupt request
ISA industry standard architecture
Kb / KB kilobits / kilobytes (x 1024 bits / x 1024 bytes)
Kb/s kilobits per second
kg kilogram
KHz kilohertz
kV kilovolt
lb pound
LAN local area network
LCD liquid crystal display
LED light-emitting diode
LPC Low pin count
LSI large scale integration
LSb / LSB least significant bit / least significant byte
LUN logical unit (SCSI)
m Meter
MCH Memory controller hub
MMX multimedia extensions
MPEG Motion Picture Experts Group
ms millisecond
MSb / MSB most significant bit / most significant byte
mux multiplex
MVA motion video acceleration
MVW motion video window
variable parameter/value
n
NIC network interface card/controller
NiMH nickel-metal hydride
NMI non-maskable interrupt
NRZI Non-return-to-zero inverted
ns nanosecond
NT nested task flag
NTSC National Television Standards Committee
NVRAM non-volatile random access memory
OS operating system
PAL 1.) programmable array logic 2.) phase altering line
PC Personal computer
PCA Printed circuit assembly
PCI peripheral component interconnect
PCM pulse code modulation
PCMCIA Personal Computer Memory Card International Association
Continued
1-6 Compaq iPAQ Series of Desktop Personal Computers
Second Edition February 2001
Technical Reference Guide
Table 1-1. Acronyms and Abbreviations Continued
Acronym/Abbreviation Description
P FC Power factor correction
PIN personal identification number
PIO Programmed I/O
POST power-on self test
PROM programmable read-only memory
P TR pointer
RAM random access memory
RAS row address strobe
rcvr receiver
RDRAM (Direct) Rambus DRAM
RGB red/green/blue (monitor input)
RH Relative humidity
RMS root mean square
ROM read-only memory
RPM revolutions per minute
RTC real time clock
R/W Read/W rite
SCSI small computer system interface
SDRAM Synchronous Dynamic RAM
SEC Single Edge-Connector
SECAM sequential colour avec memoire (sequential color with memory)
SF sign flag
SGRAM Synchronous Graphics RAM
SIMD Single instruction multiple data
SIMM single in-line memory module
SMART Self Monitor Analysis Report Technology
SMI system management interrupt
SMM system management mode
SMRAM system management RAM
SPD serial presence detect
SPDIF Sony/Philips Digital Interface (IEC-958 specification)
SPN Spare part number
SPP standard parallel port
SRAM static RAM
SSE Streaming SIMD extensions
S TN super twist pneumatic
SVGA super VGA
SW software
Continued
Compaq iPAQ Series of Desktop Personal Computers 1-7
Second Edition February 2001
Chapter 1 Introduction
Table 1-1. Acronyms and Abbreviations Continued
Acronym/Abbreviation Description
TAD telephone answering device
TAFI Temperature-sensing And Fan control Integrated circuit
TCP tape carrier package
TF trap flag
TFT thin-film transistor
TIA Telecommunications Information Administration
TPE twisted pair ethernet
TP I track per inch
TTL transistor-transistor logic
TV television
TX transmit
UART universal asynchronous receiver/transmitter
UDMA Ultra DMA
URL Uniform resource locator
us / s microsecond
USB Universal Serial Bus
UTP unshielded twisted pair
V volt
VESA Video Electronic Standards Association
VGA video graphics adapter
VLSI very large scale integration
VRAM Video RAM
W watt
W OL W ake-On-LAN
W RAM W indows RAM
ZF zero flag
ZIF zero insertion force (socket)
1-8 Compaq iPAQ Series of Desktop Personal Computers
Second Edition February 2001
Technical Reference Guide
Chapter 2
SYSTEM OVERVIEW
2. Chapter 2 SYSTEM OVERVIEW
2 .1 INTRODUCTION
The Compaq iPAQ Series of Desktop Personal Computers provides affordable business solutions
with the focus on internet access and mainstream performance. Based on an Intel Celeron and
Pentium III processors, these systems are designed to maximize the effectiveness of internet and
intranet usage while simplifying system management.
iPAQ 1.0/1.2 Desktop with
Monitor and Keyboard
iPAQ 2.0 Desktop
| 161685-B21
7M-0300B-WW
|
