Compaq iPAQ 1.2 Technical Reference Manual

Technical Reference Guide

For the

Compaq iPAQ Series of

Desktop Personal Computers

Covers iPAQ 1.0, 1.2, and 2.0 Models

This hardcopy is designed to be placed into a standard 3-ring binder. Provided below is a title block that

can be copied and cut out and placed into the slip or taped onto the edge of the binder.

iPAQ Series of Desktop Personal Computers

TRG

Reader Feedback

Please feel free to send any questions, suggestions, corrections, or comments regarding this

document please to the following email address:

CPCG.Training@compaq.com

When responding, please state the title of the referenced document.

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition - February 2001

i

NOTICE

The information in this document is subject to change without notice.

COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR

EDITORIAL ERRORS OR OMISSIONS HEREIN; NOR FOR INCIDENTAL OR

CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE,

OR USE OF THIS MATERIAL. IT IS THE RESPONSIBILITY OF MANUFACTURERS TO

ENSURE THAT DEVICES DESIGNED TO BE USED WITH COMPAQ PRODUCTS

COMPLY WITH FCC CLASS B EMISSIONS REQUIREMENTS.

This guide contains information protected by copyright. Except for use as a reference for the

described Compaq product, no part of this document may be photocopied or reproduced in any

form without prior written consent from Compaq Computer Corporation.

2000 Compaq Computer Corporation

Compaq, the Compaq logo are registered in the U.S. Patent and Trademark Office.

iPAQ is a trademark of Compaq Information Technologies Group, L.P.

Microsoft, Windows, Windows NT, and other names of Microsoft products referenced herein are trademarks or registered

trademarks of Microsoft Corporation.

Alert on LAN, Wake on LAN, and Ethernet names/brands are the property of IBM Corporation.

Intel and Pentium are registered trademarks of Intel Corporation. Celeron and MMX are trademarks of Intel Corporation.

Product names mentioned in this document may be trademarks and/or registered trademarks of other companies.

For more information regarding specifications and Compaq-specific parts please contact Compaq

Computer Corporation at http://www.compaq.com .

Technical Reference Guide

For the

Compaq iPAQ Series of Desktop Personal Computers

Second Edition – February 2001

Document Number 127M-0300B-WWEN

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition –- February 2001

ii

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition - February 2001

iii

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

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition –- February 2001

iv

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

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition - February 2001

v

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

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition –- February 2001

vi

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 (1

XX

-

XX

) .................................................................................A-3

A.5. MEMORY ERROR MESSAGES (2

XX

-

XX

) ...............................................................................A-4

A.6 KEYBOARD ERROR MESSAGES (30

X

-

XX

) ...........................................................................A-4

A.7 PRINTER ERROR MESSAGES (4

XX

-

XX

).................................................................................A-5

A.8 VIDEO (GRAPHICS) ERROR MESSAGES (5

XX

-

XX

)..............................................................A-5

A.9 DISKETTE DRIVE ERROR MESSAGES (6

XX

-

XX

).................................................................A-6

A.10 SERIAL INTERFACE ERROR MESSAGES (11

XX

-

XX

)...........................................................A-6

A.11 MODEM COMMUNICATIONS ERROR MESSAGES (12

XX

-

XX

)..........................................A-7

A.12 SYSTEM STATUS ERROR MESSAGES (16

XX

-

XX

) ...............................................................A-8

A.13 HARD DRIVE ERROR MESSAGES (17

XX

-

XX

).......................................................................A-8

A.14 HARD DRIVE ERROR MESSAGES (19

XX

-

XX

).......................................................................A-9

A.15 VIDEO (GRAPHICS) ERROR MESSAGES (24

XX

-

XX

)............................................................A-9

A.16 AUDIO ERROR MESSAGES (3206-

XX

).................................................................................A-10

A.17 DVD/CD-ROM ERROR MESSAGES (33

XX

-

XX

)....................................................................A-10

A.18 NETWORK INTERFACE ERROR MESSAGES (60

XX

-

XX

) ..................................................A-10

A.19 SCSI INTERFACE ERROR MESSAGES (65

XX

-

XX

, 66

XX

-

XX

, 67

XX

-

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

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition - February 2001

vii

LIST OF FIGURES

F

IGURE

2–1. C

OMPAQ I

PAQ D

ESKTOP

P

ERSONAL

C

OMPUTERS

................................................................. 2-1

F

IGURE

2–2. C

OMPAQ I

PAQ D

ESKTOPS

, F

RONT

V

IEWS

............................................................................. 2-4

F

IGURE

2–3. C

OMPAQ I

PAQ D

ESKTOPS

, R

EAR

V

IEWS

............................................................................... 2-5

F

IGURE

2–4. C

OMPAQ I

PAQ 1.0/1.2 D

ESKTOP

C

HASSIS

L

AYOUT

.............................................................. 2-6

F

IGURE

2–5. C

OMPAQ I

PAQ 2.0 C

HASSIS

L

AYOUT

.................................................................................... 2-7

F

IGURE

2–6. C

OMPAQ I

PAQ 1.0/1.2 S

YSTEM

B

OARD

L

AYOUTS

................................................................ 2-8

F

IGURE

2–7. C

OMPAQ I

PAQ 2.0 S

YSTEM

B

OARD

L

AYOUT

........................................................................ 2-9

F

IGURE

2–8. C

OMPAQ I

PAQ 1.0/1.2 A

RCHITECTURE

, B

LOCK DIAGRAM

................................................... 2-11

F

IGURE

2–9. C

OMPAQ I

PAQ 2.0 A

RCHITECTURE

, B

LOCK DIAGRAM

......................................................... 2-13

F

IGURE

2–10. P

ROCESSOR

A

SSEMBLY AND

M

OUNTING

........................................................................... 2-15

F

IGURE

3–1. P

ROCESSOR

/M

EMORY

S

UBSYSTEM

A

RCHITECTURE

.............................................................. 3-1

F

IGURE

3–2. C

ELERON

P

ROCESSOR

I

NTERNAL

A

RCHITECTURE

................................................................. 3-2

F

IGURE

3–3. P

ENTIUM

III P

ROCESSOR

I

NTERNAL

A

RCHITECTURE

............................................................. 3-3

F

IGURE

3–4. S

YSTEM

M

EMORY

M

AP

......................................................................................................... 3-7

F

IGURE

4-1. PCI B

US

D

EVICES AND

F

UNCTIONS

......................................................................................... 4-2

F

IGURE

4-2. C

ONFIGURATION

C

YCLE

......................................................................................................... 4-4

F

IGURE

4-3. PCI C

ONFIGURATION

S

PACE

M

APPING

................................................................................... 4-5

F

IGURE

4-4. M

ASKABLE

I

NTERRUPT

P

ROCESSING

, B

LOCK

D

IAGRAM

........................................................ 4-7

F

IGURE

4-5. C

ONFIGURATION

M

EMORY

M

AP

........................................................................................... 4-11

F

IGURE

5-1.

40-P

IN

P

RIMARY

IDE C

ONNECTOR

(

ON SYSTEM BOARD

). ...................................................... 5-3

F

IGURE

5-2.

68-P

IN

M

ULTIBAY

C

ONNECTOR

(

ON

M

ULTIBAY BOARD

)........................................................ 5-4

F

IGURE

5-3.

S

ERIAL

I

NTERFACE

C

ONNECTOR

(M

ALE

DB-9

AS VIEWED FROM REAR OF CHASSIS

)............... 5-6

F

IGURE

5-4.

S

ERIAL

I

NTERFACE

H

EADER

(

I

PAQ 1.2

LEGACY

-

FREE AND

2.0

SYSTEM BOARDS ONLY

)........ 5-7

F

IGURE

5-5.

P

ARALLEL

I

NTERFACE

C

ONNECTOR

(F

EMALE

DB-25

AS VIEWED FROM REAR OF CHASSIS

)..5-14

F

IGURE

5-6.

8042-T

O

-K

EYBOARD

T

RANSMISSION OF

C

ODE

ED

H

, T

IMING

D

IAGRAM

.............................. 5-15

F

IGURE

5-7.

K

EYBOARD OR

P

OINTING

D

EVICE

I

NTERFACE

C

ONNECTOR

.................................................. 5-21

F

IGURE

5-8.

USB I/F, B

LOCK

D

IAGRAM

................................................................................................... 5-22

F

IGURE

5-9.

USB P

ACKET

F

ORMATS

........................................................................................................ 5-23

F

IGURE

5-10.

U

NIVERSAL

S

ERIAL

B

US

C

ONNECTOR

................................................................................. 5-25

F

IGURE

5-11.

A

UDIO

S

UBSYSTEM

F

UNCTIONAL

B

LOCK

D

IAGRAM

........................................................... 5-27

F

IGURE

5-12.

AC’97 L

INK

B

US

P

ROTOCOL

.............................................................................................. 5-28

F

IGURE

5-13.

AD1881

OR

AD1885 A

UDIO

C

ODEC

F

UNCTIONAL

B

LOCK

D

IAGRAM

................................. 5-29

F

IGURE

5-14.

N

ETWORK

I

NTERFACE

C

ONTROLLER

B

LOCK

D

IAGRAM

...................................................... 5-32

F

IGURE

5-15.

E

THERNET

TPE C

ONNECTOR

(RJ-45,

VIEWED FROM CARD EDGE

)...................................... 5-36

F

IGURE

6-1. G

RAPHICS

S

UBSYSTEM

, B

LOCK DIAGRAM

.............................................................................. 6-2

F

IGURE

6-2. GMCH I

NTEGRATED

G

RAPHICS

S

UBSYSTEM

......................................................................... 6-3

F

IGURE

7–1.

P

OWER

D

ISTRIBUTION AND

C

ONTROL

, B

LOCK

D

IAGRAM

....................................................... 7-1

F

IGURE

7–2.

I

PAQ 1.0/1.2 P

OWER

C

ABLE

D

IAGRAM

................................................................................. 7-4

F

IGURE

7–3.

I

PAQ 2.0 P

OWER

C

ABLE

D

IAGRAM

....................................................................................... 7-5

F

IGURE

7–4.

I

PAQ 1.0/1.2 S

IGNAL

D

ISTRIBUTION

D

IAGRAM

..................................................................... 7-7

F

IGURE

7–5.

I

PAQ 2.0 S

IGNAL

D

ISTRIBUTION

D

IAGRAM

........................................................................... 7-8

F

IGURE

7–6. S

YSTEM

B

OARD

H

EADER

P

INOUTS

........................................................................................ 7-9

F

IGURE

B–1. ASCII C

HARACTER

S

ET

........................................................................................................B-1

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition –- February 2001

viii

F

IGURE

C–1. K

EYSTROKE

P

ROCESSING

E

LEMENTS

, B

LOCK

D

IAGRAM

......................................................C-2

F

IGURE

C–2. PS/2 K

EYBOARD

-T

O

-S

YSTEM

T

RANSMISSION

, T

IMING

D

IAGRAM

........................................C-3

F

IGURE

C–3. U.S. E

NGLISH

(101-K

EY

) K

EYBOARD

K

EY

P

OSITIONS

..........................................................C-5

F

IGURE

C–4. N

ATIONAL

(102-K

EY

) K

EYBOARD

K

EY

P

OSITIONS

...............................................................C-5

F

IGURE

C–5. U.S. E

NGLISH

W

INDOWS

(101W-K

EY

) K

EYBOARD

K

EY

P

OSITIONS

.....................................C-6

F

IGURE

C–6. N

ATIONAL

W

INDOWS

(102W-K

EY

) K

EYBOARD

K

EY

P

OSITIONS

..........................................C-6

F

IGURE

C–7. 7-B

UTTON

E

ASY

A

CCESS

K

EYBOARD

L

AYOUT

.....................................................................C-7

F

IGURE

C–8. 8-B

UTTON

E

ASY

A

CCESS

K

EYBOARD

L

AYOUT

.....................................................................C-7

F

IGURE

C–9. PS/2 K

EYBOARD

C

ABLE

C

ONNECTOR

(M

ALE

)....................................................................C-16

F

IGURE

C–10. USB K

EYBOARD

C

ABLE

C

ONNECTOR

(M

ALE

) .................................................................C-16

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition - February 2001

ix

LIST OF TABLES

T

ABLE

1–1. A

CRONYMS AND

A

BBREVIATIONS

.......................................................................................... 1-4

T

ABLE

2-1.

I

PAQ S

TANDARD

F

EATURE

D

IFFERENCE

M

ATRIX

................................................................... 2-3

T

ABLE

2-2.

I

PAQ 1.0/1.2 A

RCHITECTURAL

C

OMPARISON

......................................................................... 2-10

T

ABLE

2-3. C

HIPSET

F

UNCTIONS

.............................................................................................................. 2-16

T

ABLE

2-4. S

UPPORT

C

OMPONENT

F

UNCTIONS

........................................................................................ 2-17

T

ABLE

2-5. E

NVIRONMENTAL

S

PECIFICATIONS

........................................................................................ 2-19

T

ABLE

2-6. E

LECTRICAL

S

PECIFICATIONS

................................................................................................ 2-19

T

ABLE

2-7. P

HYSICAL

S

PECIFICATIONS

.................................................................................................... 2-20

T

ABLE

2-8. M

ULTI

B

AY

24

X

CD-ROM D

RIVE

S

PECIFICATIONS

............................................................... 2-20

T

ABLE

2-9. M

ULTI

B

AY

24

X

CD-ROM D

RIVE

S

PECIFICATIONS

............................................................... 2-21

T

ABLE

2-10. H

ARD

D

RIVE

S

PECIFICATIONS

............................................................................................. 2-21

T

ABLE

3–1. C

ELERON

P

ROCESSOR

S

TATISTICAL

C

OMPARISON

.................................................................. 3-2

T

ABLE

3–2. P

ENTIUM

III P

ROCESSOR

S

TATISTICAL

C

OMPARISON

............................................................. 3-3

T

ABLE

3–3. SPD A

DDRESS

M

AP

(SDRAM DIMM).................................................................................... 3-6

T

ABLE

3–4. H

OST

/PCI B

RIDGE

C

ONFIGURATION

R

EGISTERS

(GMCH, F

UNCTION

0) ................................. 3-8

T

ABLE

4-1. PCI D

EVICE

C

ONFIGURATION

A

CCESS

D

ATA

.......................................................................... 4-4

T

ABLE

4-2. LPC B

RIDGE

C

ONFIGURATION

R

EGISTERS

(ICH, F

UNCTION

0)................................................ 4-6

T

ABLE

4-3. M

ASKABLE

I

NTERRUPT

P

RIORITIES AND

A

SSIGNMENTS

.......................................................... 4-8

T

ABLE

4-4. M

ASKABLE

I

NTERRUPT

C

ONTROL

R

EGISTERS

......................................................................... 4-8

T

ABLE

4-5. D

EFAULT

DMA C

HANNEL

A

SSIGNMENTS

A

ND

R

EGISTER

I/O P

ORTS

................................... 4-10

T

ABLE

4-6. C

LOCK

G

ENERATION AND

D

ISTRIBUTION

.............................................................................. 4-11

T

ABLE

4-7. C

ONFIGURATION

M

EMORY

(CMOS) M

AP

............................................................................. 4-13

T

ABLE

4-8.

I

PAQ 2.0 S

YSTEM

B

OOT

/ROM F

LASH

S

TATUS

LED I

NDICATIONS

........................................ 4-24

T

ABLE

4-9. S

YSTEM

S

TATUS

LED I

NDICATIONS

....................................................................................... 4-24

T

ABLE

4-10. S

YSTEM

I/O M

AP

................................................................................................................ 4-26

T

ABLE

4-11. 82801 ICH GPIO R

EGISTER

U

TILIZATION

............................................................................ 4-27

T

ABLE

4-12 I/O C

ONTROLLER

C

ONTROL

R

EGISTERS

................................................................................ 4-28

T

ABLE

4-13. LPC47B357 GPIO R

EGISTER

U

TILIZATION

(D

ESKTOP AND

M

INITOWER ONLY

) .................. 4-29

T

ABLE

4-14. 82802 FWH GPIO R

EGISTER

U

TILIZATION

.......................................................................... 4-30

T

ABLE

5–1. IDE PCI C

ONFIGURATION

R

EGISTERS

.................................................................................... 5-2

T

ABLE

5–2.

IDE B

US

M

ASTER

C

ONTROL

R

EGISTERS

................................................................................. 5-2

T

ABLE

5–3. 40-P

IN

P

RIMARY

IDE C

ONNECTOR

P

INOUT

............................................................................ 5-3

T

ABLE

5–4. 68-P

IN

M

ULTIBAY

C

ONNECTOR

P

INOUT

................................................................................. 5-4

T

ABLE

5–5.

DB-9 S

ERIAL

C

ONNECTOR

P

INOUT

......................................................................................... 5-6

T

ABLE

5–6. S

ERIAL

I

NTERFACE

C

ONFIGURATION

R

EGISTERS

.................................................................... 5-7

T

ABLE

5–7. S

ERIAL

I

NTERFACE

C

ONTROL

R

EGISTERS

............................................................................... 5-8

T

ABLE

5–8. P

ARALLEL

I

NTERFACE

C

ONFIGURATION

R

EGISTERS

............................................................. 5-10

T

ABLE

5–9.

P

ARALLEL

I

NTERFACE

C

ONTROL

R

EGISTERS

......................................................................... 5-11

T

ABLE

5–10. DB-25 P

ARALLEL

C

ONNECTOR

P

INOUT

.............................................................................. 5-14

T

ABLE

5–11. 8042-T

O

-K

EYBOARD

C

OMMANDS

...................................................................................... 5-16

T

ABLE

5–12. K

EYBOARD

I

NTERFACE

C

ONFIGURATION

R

EGISTERS

.......................................................... 5-17

T

ABLE

5–13. CPU C

OMMANDS

T

O

T

HE

8042.......................................................................................... 5-19

T

ABLE

5–14. K

EYBOARD

/P

OINTING

D

EVICE

C

ONNECTOR

P

INOUT

.......................................................... 5-21

T

ABLE

5–15. USB I

NTERFACE

C

ONFIGURATION

R

EGISTERS

.................................................................... 5-24

T

ABLE

5–16. USB C

ONTROL

R

EGISTERS

................................................................................................. 5-24

T

ABLE

5–17. USB C

ONNECTOR

P

INOUT

.................................................................................................. 5-25

T

ABLE

5–18. USB C

ABLE

L

ENGTH

D

ATA

................................................................................................ 5-25

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition –- February 2001

x

T

ABLE

5–19. AC’97 A

UDIO

C

ONTROLLER

PCI C

ONFIGURATION

R

EGISTERS

........................................... 5-30

T

ABLE

5–20. AC’97 A

UDIO

C

ODEC

C

ONTROL

R

EGISTERS

....................................................................... 5-30

T

ABLE

5–21. A

UDIO

S

UBSYSTEM

S

PECIFICATIONS

................................................................................... 5-31

T

ABLE

5–22. AOL E

VENTS

...................................................................................................................... 5-33

T

ABLE

5–23. NIC C

ONTROLLER

PCI C

ONFIGURATION

R

EGISTERS

.......................................................... 5-35

T

ABLE

5–24. NIC C

ONTROL

R

EGISTERS

.................................................................................................. 5-35

T

ABLE

5–25. 825

XX

NIC O

PERATING

S

PECIFICATIONS

............................................................................ 5-36

T

ABLE

6-1. G

RAPHICS

D

ISPLAY

M

ODES

..................................................................................................... 6-4

T

ABLE

6-2. G

RAPHICS

C

ONTROLLER

PCI C

ONFIGURATION

R

EGISTERS

...................................................... 6-5

T

ABLE

6-3. M

ONITOR

P

OWER

M

ANAGEMENT

C

ONDITIONS

........................................................................ 6-5

T

ABLE

6-4. DB-15 M

ONITOR

C

ONNECTOR

P

INOUT

................................................................................... 6-6

T

ABLE

7-1. 90-W

ATT

P

OWER

S

UPPLY

A

SSEMBLY

S

PECIFICATIONS

(

I

PAQ 1.

X

)......................................... 7-2

T

ABLE

7-2. 90-W

ATT

P

OWER

S

UPPLY

A

SSEMBLY

S

PECIFICATIONS

(

I

PAQ 2.0)......................................... 7-2

T

ABLE

8-1. D

ESKTOP

M

ANAGEMENT

F

UNCTIONS

(INT15)........................................................................ 8-3

T

ABLE

8-2. CMOS F

EATURE

B

ITS

............................................................................................................. 8-9

T

ABLE

8-3. P

N

P BIOS F

UNCTIONS

.......................................................................................................... 8-12

T

ABLE

8-4. APM BIOS F

UNCTIONS

(INT15) .......................................................................................... 8-17

T

ABLE

A–1. B

EEP

/K

EYBOARD

LED C

ODES

...............................................................................................A-1

T

ABLE

A–2. P

OWER

-O

N

S

ELF

T

EST

(POST) M

ESSAGES

............................................................................A-2

T

ABLE

A–3. S

YSTEM

E

RROR

M

ESSAGES

....................................................................................................A-3

T

ABLE

A–4. M

EMORY

E

RROR

M

ESSAGES

..................................................................................................A-4

T

ABLE

A–5. K

EYBOARD

E

RROR

M

ESSAGES

..............................................................................................A-4

T

ABLE

A–6. P

RINTER

E

RROR

M

ESSAGES

...................................................................................................A-5

T

ABLE

A–7. V

IDEO

(G

RAPHICS

) E

RROR

M

ESSAGES

..................................................................................A-5

T

ABLE

A–8. D

ISKETTE

D

RIVE

E

RROR

M

ESSAGES

......................................................................................A-6

T

ABLE

A–9. S

ERIAL

I

NTERFACE

E

RROR

M

ESSAGES

...................................................................................A-6

T

ABLE

A–10. S

ERIAL

I

NTERFACE

E

RROR

M

ESSAGES

.................................................................................A-7

T

ABLE

A–11. S

YSTEM

S

TATUS

E

RROR

M

ESSAGES

.....................................................................................A-8

T

ABLE

A–12. H

ARD

D

RIVE

E

RROR

M

ESSAGES

..........................................................................................A-8

T

ABLE

A–13. H

ARD

D

RIVE

E

RROR

M

ESSAGES

..........................................................................................A-9

T

ABLE

A–14. V

IDEO

(G

RAPHICS

) E

RROR

M

ESSAGES

................................................................................A-9

T

ABLE

A–15. A

UDIO

E

RROR

M

ESSAGES

..................................................................................................A-10

T

ABLE

A–16. DVD/CD-ROM D

RIVE

E

RROR

M

ESSAGES

........................................................................A-10

T

ABLE

A–17. N

ETWORK

I

NTERFACE

E

RROR

M

ESSAGES

..........................................................................A-10

T

ABLE

A–18. SCSI I

NTERFACE

E

RROR

M

ESSAGES

..................................................................................A-11

T

ABLE

A–19. P

OINTING

D

EVICE

I

NTERFACE

E

RROR

M

ESSAGES

..............................................................A-11

T

ABLE

C–1. K

EYBOARD

-

TO

-S

YSTEM

C

OMMANDS

...................................................................................C-11

T

ABLE

C–2. K

EYBOARD

S

CAN

C

ODES

.....................................................................................................C-12

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition – February 2001

1-1

Chapter 1

INTRODUCTION

1.

Chapter 1 INTRODUCTION

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 ½ x 11-inch format. Note that printing in black and white will lose color

shading properties.

Chapter 1 Introduction

Compaq iPAQ Series of Desktop Personal Computers

Second Edition – February 2001

1-2

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:

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.

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

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition – February 2001

1-3

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.

Chapter 1 Introduction

Compaq iPAQ Series of Desktop Personal Computers

Second Edition – February 2001

1-4

1.6 COMMON ACRONYMS AND ABBREVIATIONS

Table 1-1 lists the acronyms and abbreviations used in this guide.

Table 1–1. 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-LAN™

ASIC application-specific integrated circuit

AT 1) attention (modem commands) 2) 286-based PC architecture

ATA AT attachment (IDE protocol)

ATAPI AT attachment w/packet interface extensions

AVI audio-video interleaved

AVGA Advanced VGA

AWG 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

BTO 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

Technical Reference Guide

Compaq iPAQ Series of Desktop Personal Computers

Second Edition – February 2001

1-5

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

Chapter 1 Introduction

Compaq iPAQ Series of Desktop Personal Computers

Second Edition – February 2001

1-6

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

n

variable parameter/value

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

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