Intel D848PMB User manual

November 2003
Order Number: C53953-001
The Intel®Desktop Board D848PMB may contain design defects or errors known as errata that may cause the product to deviate from published specifications. Current
characterized errata are documented in the Intel Desktop Board D848PMB Specification Update.
Intel®Desktop Board
D848PMB
Technical Product Specification

Revision History
Revision Revision History Date
-001 First release of the Intel®Desktop Board D848PMB Technical Product
Specification.
November 2003
This product specification applies to only the standard Intel®Desktop Board D848PMB with BIOS
identifier RC86510A.86A.
Changes to this specification will be published in the Intel Desktop Board D848PMB Specification
Update before being incorporated into a revision of this document.
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EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED
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Designers must not rely on the absence or characteristics of any features or instructions marked “reserved”or “undefined.”
Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising
from future changes to them.
Intel®desktop boards may contain design defects or errors known as errata, which may cause the product to deviate from
published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be
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Other names and brands may be claimed as the property of others.
Copyright © 2003, Intel Corporation. All rights reserved.

iii
Preface
This Technical Product Specification (TPS) specifies the board layout, components, connectors,
power and environmental requirements, and the BIOS for the Intel®Desktop Board D848PMB. It
describes the standard product and available manufacturing options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Desktop Board D848PMB
and its components to the vendors, system integrators, and other engineers and technicians who
need this level of information. It is specifically not intended for general audiences.
What This Document Contains
Chapter Description
1 A description of the hardware used on the Desktop Board D848PMB
2 A map of the resources of the Desktop Board
3 The features supported by the BIOS Setup program
4 The contents of the BIOS Setup program’s menus and submenus
5 A description of the BIOS error messages, beep codes, and POST codes
Typographical Conventions
This section contains information about the conventions used in this specification. Not all of these
symbols and abbreviations appear in all specifications of this type.
Notes, Cautions, and Warnings
✏ NOTE
Notes call attention to important information.
# INTEGRATOR’S NOTES
Integrator’s notes are used to call attention to information that may be useful to system
integrators.
CAUTION
Cautions are included to help you avoid damaging hardware or losing data.

Intel Desktop Board D848PMB Technical Product Specification
iv
WARNING
Warnings indicate conditions, which if not observed, can cause personal injury.
Other Common Notation
# Used after a signal name to identify an active-low signal (such as USBP0#)
(NxnX) When used in the description of a component, N indicates component type, xn are the relative
coordinates of its location on the Desktop Board D848PMB, and X is the instance of the
particular part at that general location. For example, J5J1 is a connector, located at 5J. It is
the first connector in the 5J area.
GB Gigabyte (1,073,741,824 bytes)
GB/sec Gigabytes per second
KB Kilobyte (1024 bytes)
Kbit Kilobit (1024 bits)
kbits/sec 1000 bits per second
MB Megabyte (1,048,576 bytes)
MB/sec Megabytes per second
Mbit Megabit (1,048,576 bits)
Mbit/sec Megabits per second
xxh An address or data value ending with a lowercase h indicates a hexadecimal value.
x.x V Volts. Voltages are DC unless otherwise specified.
* This symbol is used to indicate third-party brands and names that are the property of their
respective owners.

v
Contents
1Product Description
1.1 Overview ....................................................................................................................12
1.1.1 Feature Summary ........................................................................................12
1.1.2 Manufacturing Options .................................................................................13
1.1.3 Board Layout................................................................................................14
1.1.4 Block Diagram..............................................................................................15
1.2 Online Support ...........................................................................................................16
1.3 Operating System Support .........................................................................................16
1.4 Design Specifications .................................................................................................17
1.5 Processor ...................................................................................................................20
1.6 System Memory .........................................................................................................21
1.7 Intel®848P Chipset ....................................................................................................23
1.7.1 Universal 0.8 V / 1.5 V AGP 3.0 Connector..................................................23
1.7.2 USB..............................................................................................................24
1.7.3 IDE Support .................................................................................................24
1.7.4 Real-Time Clock, CMOS SRAM, and Battery...............................................26
1.8 I/O Controller ..............................................................................................................26
1.8.1 Serial Port ....................................................................................................27
1.8.2 Parallel Port..................................................................................................27
1.8.3 Diskette Drive Controller ..............................................................................27
1.8.4 Keyboard and Mouse Interface ....................................................................27
1.9 Audio Subsystem........................................................................................................28
1.9.1 Audio Subsystem Software ..........................................................................28
1.9.2 Audio Connectors.........................................................................................28
1.9.3 Realtek ALC202A-based Audio Subsystem (Optional).................................29
1.9.4 Intel®Flex 6 Audio Subsystem (Optional).....................................................29
1.10 LAN Subsystem..........................................................................................................31
1.10.1 10/100 Mbits/sec LAN Subsystem (Optional) ...............................................31
1.10.2 Gigabit LAN Subsystem (Optional)...............................................................32
1.10.3 Alert Standard Format (ASF) Support ..........................................................33
1.10.4 LAN Subsystem Software ............................................................................33
1.11 Hardware Management Subsystem............................................................................33
1.11.1 Hardware Monitoring and Fan Control ASIC ................................................33
1.11.2 Thermal Monitoring ......................................................................................34
1.11.3 Fan Monitoring .............................................................................................35
1.11.4 Chassis Intrusion and Detection...................................................................35
1.12 Power Management ...................................................................................................35
1.12.1 ACPI.............................................................................................................35
1.12.2 Hardware Support ........................................................................................38

Intel Desktop Board D848PMB Technical Product Specification
vi
2Technical Reference
2.1 Introduction.................................................................................................................43
2.2 Memory Map ..............................................................................................................44
2.3 DMA Channels ...........................................................................................................44
2.4 Fixed I/O Map.............................................................................................................45
2.5 PCI Configuration Space Map ....................................................................................46
2.6 Interrupts ....................................................................................................................47
2.7 PCI Interrupt Routing Map..........................................................................................48
2.8 Connectors .................................................................................................................50
2.8.1 Back Panel Connectors................................................................................51
2.8.2 Internal I/O Connectors ................................................................................52
2.8.3 External I/O Connectors ...............................................................................60
2.9 Jumper Blocks............................................................................................................64
2.9.1 Front Panel Audio Connector/Jumper Block.................................................64
2.9.2 BIOS Setup Configuration Jumper Block......................................................65
2.10 Mechanical Considerations.........................................................................................66
2.10.1 I/O Shield .....................................................................................................67
2.11 Electrical Considerations ............................................................................................68
2.11.1 DC Loading ..................................................................................................68
2.11.2 Add-in Board Considerations........................................................................68
2.11.3 Fan Connector Current Capability ................................................................68
2.11.4 Power Supply Considerations ......................................................................69
2.12 Thermal Considerations..............................................................................................69
2.13 Reliability ....................................................................................................................72
2.14 Environmental ............................................................................................................72
2.15 Regulatory Compliance ..............................................................................................73
2.15.1 Safety Regulations .......................................................................................73
2.15.2 EMC Regulations .........................................................................................73
2.15.3 European Union Declaration of Conformity Statement .................................74
2.15.4 Product Ecology Statements ........................................................................75
2.15.5 Product Certification Markings (Board Level) ...............................................75
3Overview of BIOS Features
3.1 Introduction.................................................................................................................77
3.2 BIOS Flash Memory Organization ..............................................................................77
3.3 Resource Configuration..............................................................................................78
3.3.1 PCI Autoconfiguration ..................................................................................78
3.3.2 PCI IDE Support...........................................................................................78
3.4 System Management BIOS (SMBIOS).......................................................................79
3.5 Legacy USB Support ..................................................................................................79
3.6 BIOS Updates ............................................................................................................80
3.6.1 Language Support........................................................................................80
3.6.2 Custom Splash Screen.................................................................................81
3.7 Recovering BIOS Data ...............................................................................................81
3.8 Boot Options...............................................................................................................82
3.8.1 CD-ROM Boot..............................................................................................82
3.8.2 Network Boot................................................................................................82

Contents
vii
3.8.3 Booting Without Attached Devices ...............................................................82
3.8.4 Changing the Default Boot Device During POST..........................................82
3.9 Fast Booting Systems with Intel®Rapid BIOS Boot....................................................83
3.9.1 Peripheral Selection and Configuration ........................................................83
3.9.2 Intel Rapid BIOS Boot ..................................................................................83
3.10 BIOS Security Features..............................................................................................84
4BIOS Setup Program
4.1 Introduction.................................................................................................................85
4.2 Maintenance Menu .....................................................................................................86
4.3 Main Menu..................................................................................................................87
4.3.1 Additional System Information Submenu......................................................88
4.4 Advanced Menu..........................................................................................................89
4.4.1 PCI Configuration Submenu.........................................................................90
4.4.2 Boot Configuration Submenu .......................................................................91
4.4.3 Peripheral Configuration Submenu...............................................................92
4.4.4 Drive Configuration Submenu ......................................................................94
4.4.5 Floppy Configuration Submenu ....................................................................98
4.4.6 Event Log Configuration Submenu...............................................................99
4.4.7 Video Configuration Submenu....................................................................100
4.4.8 USB Configuration Submenu .....................................................................101
4.4.9 Chipset Configuration Submenu.................................................................102
4.4.10 Fan Control Configuration Submenu ..........................................................104
4.4.11 Hardware Monitoring..................................................................................105
4.5 Security Menu ..........................................................................................................106
4.6 Power Menu .............................................................................................................107
4.6.1 ACPI Submenu ..........................................................................................107
4.7 Boot Menu................................................................................................................108
4.7.1 Boot Device Priority Submenu....................................................................109
4.7.2 Hard Disk Drives Submenu ........................................................................110
4.7.3 Removable Devices Submenu ...................................................................110
4.7.4 ATAPI CD-ROM Drives Submenu..............................................................111
4.8 Exit Menu .................................................................................................................111
5Error Messages and Beep Codes
5.1 BIOS Error Messages...............................................................................................113
5.2 Port 80h POST Codes..............................................................................................115
5.3 Bus Initialization Checkpoints ...................................................................................119
5.4 Speaker....................................................................................................................120
5.5 BIOS Beep Codes ....................................................................................................120

Intel Desktop Board D848PMB Technical Product Specification
viii
Figures
1. Desktop Board D848PMB Components......................................................................14
2. Block Diagram ............................................................................................................15
3. Back Panel Audio Connector Options for Flex 6 Audio Subsystem ............................29
4. Adapter for S/PDIF Back Panel Connector .................................................................30
5. Flex 6 Audio Subsystem Block Diagram .....................................................................30
6. LAN Connector LED Locations ...................................................................................31
7. LAN Connector LED Locations ...................................................................................32
8. Thermal Monitoring.....................................................................................................34
9. Location of the Standby Power Indicator LED on the D848PMB Board ......................41
10. Back Panel Connectors ..............................................................................................51
11. Audio Connectors .......................................................................................................53
12. Power and Hardware Control Connectors ..................................................................55
13. D848PMB Add-in Board and Peripheral Interface Connectors....................................58
14. External I/O Connectors .............................................................................................60
15. Connection Diagram for Front Panel Connector .........................................................61
16. Connection Diagram for Front Panel USB Connectors ...............................................63
17. Location of the Jumper Blocks....................................................................................64
18. Desktop Board D848PMB Dimensions .......................................................................66
19. I/O Shield Dimensions ................................................................................................67
20. Localized High Temperature Zones............................................................................70
Tables
1. Feature Summary.......................................................................................................12
2. Manufacturing Options ...............................................................................................13
3. Specifications .............................................................................................................17
4. Supported System Bus Frequency and Memory Speed Combinations.......................21
5. Supported Memory Configurations .............................................................................22
6. LAN Connector LED States ........................................................................................32
7. LAN Connector LED States ........................................................................................33
8. Effects of Pressing the Power Switch .........................................................................36
9. Power States and Targeted System Power ................................................................36
10. Wake-up Devices and Events.....................................................................................37
11. Fan Connector Function/Operation.............................................................................39
12. System Memory Map..................................................................................................44
13. DMA Channels ...........................................................................................................44
14. I/O Map ......................................................................................................................45
15. PCI Configuration Space Map ....................................................................................46
16. PCI Configuration Space Bus Number Options ..........................................................46
17. Interrupts ....................................................................................................................47
18. PCI Interrupt Routing Map..........................................................................................49
19. Front Panel Audio Connector .....................................................................................54
20. ATAPI CD-ROM Connector ........................................................................................54
21. S/PDIF Connector ......................................................................................................54
22. Auxiliary Line In Connector.........................................................................................54
23. Rear Chassis Fan Connector .....................................................................................55

Contents
ix
24. ATX12V Power Connector..........................................................................................56
25. Processor Fan Connector...........................................................................................56
26. Main Power Connector ...............................................................................................56
27. Front Chassis Fan Connector.....................................................................................57
28. Chassis Intrusion Connector.......................................................................................57
29. SCSI Hard Drive Activity LED Connector (Optional) ...................................................59
30. Serial ATA Connectors ...............................................................................................59
31. Auxiliary Front Panel Power/Sleep/Message-Waiting LED Connector ........................61
32. Front Panel Connector ...............................................................................................61
33. States for a One-Color Power LED.............................................................................62
34. States for a Two-Color Power LED.............................................................................62
35. Front Panel Audio Connector/Jumper Block ...............................................................65
36. BIOS Setup Configuration Jumper Settings................................................................65
37. DC Loading Characteristics ........................................................................................68
38. Fan Connector Current Capability ..............................................................................68
39. Thermal Considerations for Components ...................................................................71
40. Desktop Board D848PMB Environmental Specifications ............................................72
41. Safety Regulations .....................................................................................................73
42. EMC Regulations........................................................................................................73
43. Product Certification Markings....................................................................................75
44. Boot Device Menu Options.........................................................................................82
45. Supervisor and User Password Functions ..................................................................84
46. BIOS Setup Program Menu Bar .................................................................................85
47. BIOS Setup Program Function Keys ..........................................................................86
48. Maintenance Menu .....................................................................................................86
49. Main Menu..................................................................................................................87
50. Additional System Information Submenu....................................................................88
51. Advanced Menu..........................................................................................................89
52. PCI Configuration Submenu .......................................................................................90
53. Boot Configuration Submenu......................................................................................91
54. Peripheral Configuration Submenu.............................................................................92
55. Drive Configuration Submenu.....................................................................................94
56. SATA/PATA Submenus..............................................................................................97
57. Floppy Configuration Submenu ..................................................................................98
58. Event Log Configuration Submenu.............................................................................99
59. Video Configuration Submenu..................................................................................100
60. USB Configuration Submenu....................................................................................101
61. Chipset Configuration Submenu ...............................................................................102
62. Fan Control Configuration Submenu ........................................................................104
63. Hardware Monitoring Display....................................................................................105
64. Security Menu ..........................................................................................................106
65. Power Menu .............................................................................................................107
66. ACPI Submenu.........................................................................................................107
67. Boot Menu................................................................................................................108
68. Boot Device Priority Submenu..................................................................................109
69. Hard Disk Drives Submenu ......................................................................................110
70. Removable Devices Submenu..................................................................................110
71. ATAPI CD-ROM Drives Submenu ............................................................................111

Intel Desktop Board D848PMB Technical Product Specification
x
72. Exit Menu .................................................................................................................111
73. BIOS Error Messages...............................................................................................113
74. Uncompressed INIT Code Checkpoints....................................................................115
75. Boot Block Recovery Code Checkpoints ..................................................................115
76. Runtime Code Uncompressed in F000 Shadow RAM ..............................................116
77. Bus Initialization Checkpoints ...................................................................................119
78. Upper Nibble High Byte Functions............................................................................119
79. Lower Nibble High Byte Functions............................................................................120
80. Beep Codes..............................................................................................................121

11
1 Product Description
What This Chapter Contains
1.1 Overview ....................................................................................................................12
1.2 Online Support ...........................................................................................................16
1.3 Operating System Support .........................................................................................16
1.4 Design Specifications .................................................................................................17
1.5 Processor ...................................................................................................................20
1.6 System Memory .........................................................................................................21
1.7 Intel®848P Chipset ....................................................................................................23
1.8 I/O Controller ..............................................................................................................26
1.9 Audio Subsystem........................................................................................................28
1.10 LAN Subsystem..........................................................................................................31
1.11 Hardware Management Subsystem............................................................................33
1.12 Power Management ...................................................................................................35

Intel Desktop Board D848PMB Technical Product Specification
12
1.1 Overview
1.1.1 Feature Summary
Table 1 summarizes the major features of the Intel®Desktop Board D848PMB.
Table 1. Feature Summary
Form Factor microATX (9.60 inches by 8.50 inches [243.84 millimeters by 215.90 millimeters])
Processor • Support for an Intel®Pentium®4 processor in an mPGA478 socket with a
400/533/800 MHz system bus
• Support for an Intel®Celeron®processor in an mPGA478 socket with a
400 MHz system bus
Memory • Two 184-pin DDR SDRAM Dual Inline Memory Module (DIMM) sockets
• Support for DDR 400, DDR 333, and DDR 266
• Support for up to 2 GB of system memory
Chipset Intel®848P Chipset, consisting of:
• Intel®82848P Memory Controller Hub (MCH)
• Intel®82801EB I/O Controller Hub (ICH5)
• 4 Mbit Firmware Hub (FWH)
Video Universal 0.8 V / 1.5 V AGP 3.0 connector (with integrated retention mechanism)
supporting 1x, 4x, and 8x AGP cards
Audio Refer to Manufacturing Options on page 13
I/O Control SMSC LPC47M172 LPC Bus I/O controller
USB Support for USB 2.0 devices
Peripheral
Interfaces
• Eight USB ports
• One serial port
• One parallel port
• Two Serial ATA IDE interfaces
• Two Parallel ATA IDE interfaces with UDMA 33, ATA-66/100 support
• One diskette drive interface
• PS/2* keyboard and mouse ports
LAN Support Refer to Manufacturing Options on page 13
BIOS • Intel/AMI BIOS (resident in the 4 Mbit FWH)
• Support for Advanced Configuration and Power Interface (ACPI), Plug and Play,
and SMBIOS
Instantly Available
PC Technology
• Support for PCI Local Bus Specification Revision 2.2
• Suspend to RAM support
• Wake on PCI, RS-232, front panel, PS/2 devices, and USB ports
continued

Product Description
13
Table 1. Feature Summary (continued)
Expansion
Capabilities
Three PCI bus add-in card connectors (SMBus routed to PCI bus connector 2)
Hardware Monitor
Subsystem
• Hardware monitoring and fan control ASIC
• Voltage sense to detect out of range power supply voltages
• Thermal sense to detect out of range thermal values
• Three fan connectors
• Three fan sense inputs used to monitor fan activity
• Fan speed control
For information about Refer to
The board’s compliance level with ACPI, Plug and Play, and SMBIOS Section 1.4, page 17
1.1.2 Manufacturing Options
Table 2 describes the manufacturing options on the Desktop Board D848PMB. Not every
manufacturing option is available in all marketing channels. Please contact your Intel
representative to determine which manufacturing options are available to you.
Table 2. Manufacturing Options
SCSI Hard Drive
Activity LED
Connector
Allows add-in hard drive controllers (SCSI or other) to use the same LED as the
onboard IDE controller.
Audio The board provides one of the following:
• Audio subsystem for AC ‘97 processing using the Realtek ALC202A codec
• Flex 6 audio subsystem using the Analog Devices AD1985 codec
LAN The board provides one of the following:
• Gigabit (10/100/1000 Mbits/sec) LAN subsystem using the Intel®82547EI Platform
LAN Connect (PLC) device
• 10/100 Mbits/sec LAN subsystem using the Intel®82562EZ Platform LAN Connect
(PLC) device
For information about Refer to
Available configurations for the Desktop Board D848PMB Section 1.2, page 16

Intel Desktop Board D848PMB Technical Product Specification
14
1.1.3 Board Layout
Figure 1 shows the location of the major components on the Desktop Board D848PMB.
OM16418
EA CB D
H
I
J
F
OM
Q
PR
SUW
V T
LN
X
Y
Z
AA
FF
EE
DD
CC
BB
G
K
A Audio codec Q Front chassis fan connector
B Front panel audio connector R Chassis intrusion connector
C Ethernet PLC device (optional) S 4 Mbit Firmware Hub (FWH)
D AGP connector T Serial ATA connectors
E Back panel connectors U BIOS Setup configuration jumper block
F Rear chassis fan connector V Auxiliary front panel power LED connector
G +12V power connector (ATX12V) W Front panel connector
H mPGA478 processor socket X Front panel USB connector
I Processor fan connector Y Intel 82801EB I/O Controller Hub (ICH5)
J Intel 82848P MCH Z Front panel USB connector
K DIMM sockets AA Battery
L I/O controller BB PCI bus add-in card connectors
M Power connector CC Speaker
N SCSI hard drive activity LED connector (optional) DD Auxiliary line-in connector
O Diskette drive connector EE S/PDIF connector (optional
P Parallel ATA IDE connectors FF ATAPI CD-ROM connector
Figure 1. Desktop Board D848PMB Components

Product Description
15
1.1.4 Block Diagram
Figure 2 is a block diagram of the major functional areas of the Desktop Board D848PMB.
Intel 82801EB
I/O Controller Hub
(ICH5)
Intel 82848P
Memory Controller
Hub (MCH)
4 Mbit
Firmware Hub
(FWH)
AHA
Bus
System Bus
(400/533/800 MHz)
mPGA478
Processor Socket
Parallel ATA IDE
Connectors (2)
Diskette Drive
Connector
LPC Bus
I/O
Controller PS/2 Keyboard
PS/2 Mouse
Parallel Port
Serial Port
Parallel ATA
IDE Interface
LPC
Bus
Hardware
Monitoring
and Fan
Control ASIC
OM16508
LAN
Connector
10/100
LAN PLC
(Optional)
CSMA/CD
Unit Interface
AGP
Interface
Universal 0.8/
1.5 V AGP 3.0
Connector
= connector or socket
PCI Bus
SMBus
AC
Link
Back Panel/
Front Panel
USB Ports
USB
Memory Bus
SMBus
PCI Slot 1
PCI Slot 2
PCI Slot 3
Serial ATA IDE
Connectors (2)
Serial ATA
IDE Interface
LAN
Connector
Gigabit
LAN
PLC
(Optional) CSA
Interface
DIMM
Sockets (2)
AD1985
Audio
Codec
(Optional)
Mic In
Front Left and Right Out
CD-ROM
Line In
Center and LFE Out
Rear Left and Right Out
S/PDIF
Auxiliary Line In
Realtek
ALC202A
Audio Codec
(Optional)
Auxiliary Line In
Mic In
Line Out
CD-ROM
Line In
AC Link
Figure 2. Block Diagram

Intel Desktop Board D848PMB Technical Product Specification
16
1.2 Online Support
To find information about…Visit this World Wide Web site:
Intel Desktop Board D848PMB under
“Desktop Board Products”or “Desktop
Board Support”
http://www.intel.com/design/motherbd
http://support.intel.com/support/motherboards/desktop
Available configurations for the Desktop
Board D848PMB
http://developer.intel.com/design/motherbd/mb/mb_available.htm
Processor data sheets http://www.intel.com/design/litcentr
ICH5 addressing http://developer.intel.com/design/chipsets/datashts
Audio software and utilities http://www.intel.com/design/motherbd
LAN software and drivers http://www.intel.com/design/motherbd
1.3 Operating System Support
The Desktop Board D848PMB support drivers for all of the onboard hardware and subsystems
under the following operating systems:
• Microsoft Windows* XP
• Windows ME
• Windows 2000
• Windows 98 SE
For information about Refer to
Supported drivers Section 1.2
✏ NOTE
Third party vendors may offer other drivers.

Product Description
17
1.4 Design Specifications
Table 3 lists the specifications applicable to the Desktop Board D848PMB.
Table 3. Specifications
Reference
Name
Specification
Title
Version, Revision Date,
and Ownership
The information is
available from…
AC ’97 Audio Codec ’97 Revision 2.2,
September 2000,
Intel Corporation.
ftp://download.intel.com/labs/
media/audio/download/ac97r
22.pdf
ACPI Advanced Configuration and
Power Interface
Specification
Version 1.0b,
February 08, 1999,
Intel Corporation,
Microsoft Corporation, and
Toshiba Corporation.
http://www.acpi.info/spec10b.
htm
ASF Alert Standard Format (ASF)
Specification
Version 1.03,
June 20, 2001,
DMTF,
Intel Corporation.
http://www.dmtf.org/standards
/documents/ASF/DSP0114.p
df
ATA/
ATAPI-5
Information Technology-AT
Attachment with Packet
Interface - 5 (ATA/ATAPI-5)
Revision 3,
February 29, 2000,
Contact: T13 Chair,
Seagate Technology.
http://www.t13.org
ATX ATX Specification Version 2.1,
June 2002,
Intel Corporation.
http://www.formfactors.org/for
mfactor.asp
ATX12V ATX/ATX12V Power Supply
Design Guide
Version 1.2,
August 2000,
Intel Corporation.
http://www.formfactors.org/for
mfactor.asp
BIS Boot Integrity Services (BIS)
Application Programming
Interface (API)
Version 1.0,
August 4, 1999,
Intel Corporation.
http://www.intel.com/labs/man
age/wfm/wfmspecs.htm
Double Data Rate (DDR)
SDRAM Specification
Version 1.0,
June 2000,
JEDEC Solid State
Technology Association.
http://www.jedec.org/
Design Specification for a
184 Pin DDR Unbuffered
DIMM
Revision 1.0,
October 2001,
JEDEC Solid State
Technology Association.
http://www.jedec.org/
DDR
SDRAM
Intel®JEDEC DDR 200/266
Unbuffered DIMM
Specification Addendum
Revision 0.9,
September 27, 2001,
Intel Corporation.
http://developer.intel.com/tec
hnology/memory/index.htm
continued

Intel Desktop Board D848PMB Technical Product Specification
18
Table 3. Specifications (continued)
Reference
Name
Specification
Title
Version, Revision Date and
Ownership
The information is
available from…
EHCI Enhanced Host
Controller Interface
Specification for
Universal Serial Bus
Revision 1.0,
March 12, 2002,
Intel Corporation.
http://developer.intel.com/t
echnology/usb/download/e
hci-r10.pdf
EPP IEEE Std 1284.1-1997
(Enhanced Parallel Port)
Version 1.7,
1997,
Institute of Electrical and
Electronic Engineers.
http://standards.ieee.org/re
ading/ieee/std_public/descr
iption/busarch/1284.1-
1997_desc.html
El Torito Bootable CD-ROM
Format Specification
Version 1.0,
January 25, 1995,
Phoenix Technologies Limited
and International Business
Machines Corporation.
http://www.phoenix.com/res
ources/specs-cdrom.pdf
LPC Low Pin Count Interface
Specification
Revision 1.0,
September 29, 1997,
Intel Corporation.
http://www.intel.com/design
/chipsets/industry/lpc.htm
MicroATX microATX Motherboard
Interface Specification
Version 1.1,
June 2002,
Intel Corporation.
http://www.formfactors.org/f
ormfactor.asp
PCI PCI Local Bus
Specification
Revision 2.2,
December 18, 1998,
PCI Special Interest Group.
http://www.pcisig.com/speci
fications
PCI Bus Power
Management Interface
Specification
Revision 1.1,
December 18, 1998,
PCI Special Interest Group.
http://www.pcisig.com/speci
fications
Plug and
Play
Plug and Play BIOS
Specification
Version 1.0a,
May 5, 1994,
Compaq Computer Corporation,
Phoenix Technologies Limited,
and Intel Corporation.
http://www.microsoft.com/hwd
ev/tech/PnP/default.asp
PXE Preboot Execution
Environment
Version 2.1,
September 20, 1999,
Intel Corporation.
ftp://download.intel.com/lab
s/manage/wfm/download/p
xespec.pdf
SFX SFX/SFX12V Power
Supply Design Guide
Version 2.0,
May 2001,
Intel Corporation.
http://www.formfactors.org/f
ormfactor.asp
continued

Product Description
19
Table 3. Specifications (continued)
Reference
Name
Specification
Title
Version, Revision Date
and Ownership
The information is
available from…
SMBIOS System Management
BIOS
Version 2.3.4,
December 06, 2002,
American Megatrends
Incorporated,
Award Software International
Incorporated,
Compaq Computer Corporation,
Dell Computer Corporation,
Hewlett-Packard Company,
Intel Corporation,
International Business Machines
Corporation,
Phoenix Technologies Limited,
and SystemSoft Corporation.
http://www.dmtf.org/standar
ds/documents/SMBIOS/DS
P0134.pdf
TFX12V TFX12V Power Supply
Design Guide
Revision 1.01,
May 2002
Intel Corporation.
http://www.formfactors.org/f
ormfactor.asp
UHCI Universal Host Controller
Interface Design Guide
Revision 1.1,
March 1996,
Intel Corporation.
http://developer.intel.com/d
esign/USB/UHCI11D.htm
USB Universal Serial Bus
Specification
Revision 2.0,
April 27, 2000,
Compaq Computer Corporation,
Hewlett-Packard Company,
Lucent Technologies Inc.,
Intel Corporation,
Microsoft Corporation,
NEC Corporation, and
Koninklijke Philips Electronics
N.V.
http://www.usb.org/develop
ers/docs
WfM Wired for Management
Baseline
Version 2.0,
December 18, 1998,
Intel Corporation.
http://www.intel.com/labs/m
anage/wfm/wfmspecs.htm

Intel Desktop Board D848PMB Technical Product Specification
20
1.5 Processor
✏ NOTE
Refer to Thermal Considerations (Section 2.12, page 69) for important information when using an
Intel Pentium 4 processor operating above 2.80 GHz with this Intel desktop board.
The board is designed to support the following:
• Intel Pentium 4 processors in an mPGA478 processor socket with a 400/533/800 MHz system
bus
• Intel Celeron processors in an mPGA478 processor socket with a 400 MHz system bus
See the Intel web site listed below for the most up-to-date list of supported processors.
For information about Refer to
Supported processors for the D848PMB board http://www.intel.com/design/motherbd/mb/mb_proc
.htm
CAUTION
Use only the processors listed on web site above. Use of unsupported processors can damage the
board, the processor, and the power supply.
# INTEGRATOR’S NOTES
• Use only ATX12V-, SFX12V-, or TFX12V-compliant power supplies with the Desktop Board
D848PMB. ATX12V, SFX12V, and TFX12V power supplies have an additional power lead
that provides required supplemental power for the processor. Always connect the 20-pin and
4-pin leads of ATX12V, SFX12V, and TFX12V power supplies to the corresponding connectors
on the desktop board, otherwise the board will not boot.
• Do not use a standard ATX power supply. The board will not boot with a standard ATX power
supply.
• Refer to Table 4 on page 21 for a list of supported system bus frequency and memory speed
combinations.
For information about Refer to
Power supply connectors Section 2.8.2.3, page 55