Intel D845EPT2 User manual

Intel®Desktop Board
D845EPT2
Specification Update
Release Date: April 2003
Order Number: A98325-006
The IntelDesktop Board D845EPT2 may contain design defects or errors known as errata which
may cause the product to deviate from published specifications. Current characterized errata are
documented in this Specification Update.

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The Inteldesktop board D845EPT2 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.
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Copyright 2002, 2003, Intel Corporation.

CONTENTS
REVISION HISTORY ...................................................................................................................................v
PREFACE ...................................................................................................................................................vi
Specification Update for the IntelDesktop Board D845EPT2
GENERAL INFORMATION ..........................................................................................................................3
ERRATA.......................................................................................................................................................5
DOCUMENTATION CHANGES ...................................................................................................................7

IntelDesktop Board D845EPT2 Specification Update
v
REVISION HISTORY
Date of Revision Version Description
June 2002 -001 This document is the first Specification Update for the
IntelDesktop Board D845EPT2.
September 2002 -002 Added Erratum1. Removed Printed Board Assembly (PBA)
information from the document, as this reference is no longer
valid. Updated the Legal Disclaimer Section.
October 2002 -003 Added Erratum 2.
February 2003 -004 Added Erratum 3. Added Documentation Change 1.
March 2003 -005 Added Erratum 4. Added Documentation Change 2, 3.
April 2003 -006 Added Documentation Change 4.

IntelDesktop Board D845EPT2 Specification Update
v
i
PREFACE
This document is an update to the specifications contained in the IntelDesktop Board D845EPT2 Technical
Product Specification (Order number A84913). It is intended for hardware system manufacturers and
software developers of applications, operating systems, or tools. It will contain Specification Changes,
Errata, Specification Clarifications, and Documentation Changes.
Refer to the IntelPentium4 Processor Specification Update (Order number 249199) for specification
updates concerning the Intel Pentium 4 processor and that may apply to the desktop board D845EPT2.
Unless otherwise noted in this document, it should be assumed that any processor errata for a given stepping
are applicable to the Altered Assembly (AA) revision(s) associated with that stepping.
Refer to the Intel845 Chipset: 82845 Memory Controller Hub E (MCH) for DDR Specification Update (Order
Number 298603) for specification updates concerning the 82845E MCH Controller and that may apply to the
desktop board D845EPT2. Unless otherwise noted in this document, it should be assumed that any MCH
errata for a given stepping are applicable to the Altered Assembly (AA) revision(s) associated with that
stepping.
Refer to the Intel82801DB I/O Controller Hub 4 (ICH4) Specification Update (Order Number 290745) for
specification updates concerning the 82801DB I/O Controller Hub and that may apply to the desktop board
D845EPT2. Unless otherwise noted in this document, it should be assumed that any ICH 4 errata for a given
stepping are applicable to the Altered Assembly (AA) revision(s) associated with that stepping.
Nomenclature
Specification Changes are modifications to the current published specifications. These changes will be
incorporated in the next release of the specifications.
Errata are design defects or errors. Characterized errata may cause the desktop board D845EPT2’s
behavior to deviate from published specifications. Hardware and software designed to be used with any
given Altered Assembly (AA) and BIOS revision level must assume that all errata documented for that AA
and BIOS revision level are present on all desktop boards.
Specification Clarifications describe a specification in greater detail or further highlight a specification’s
impact to a complex design situation. These clarifications will be incorporated in the next release of the
specifications.
Documentation Changes include typos, errors, or omissions from the current published specifications.
These changes will be incorporated in the next release of the specifications.

Specification Update for the
Intel®Desktop Board D845EPT2

IntelDesktop Board D845EPT2 Specification Update
3
GENERAL INFORMATION
Basic Desktop Board D845EPT2 Identification Information
AA Revision BIOS Revision Notes
A82680-304 PT84520A.86A.0006.P02 1-5
A82680-305 PT84520A.86A.0009.P04 1-5
A82680-306 PT84520A.86A.0011.P06 1-5
A83390-304 PT84520A.86A.0005.P01 1-5
A83390-305 PT84520A.86A.0006.P02 1-5
A83390-306 PT84520A.86A.0009.P04 1-5
A83390-307 PT84520A.86A.0011.P06 1-5
A83392-304 PT84520A.86A.0006.P02 1-5
A83392-305 PT84520A.86A.0009.P04 1-5
A83392-306 PT84520A.86A.0011.P06 1-5
NOTES:
1. The AA number is found on a small label on the component side of the board.
2. The 82845E Chipset kit used on this AA revision consists of three components as follows:
Device Stepping S-Spec Numbers
82845E MCH E0 SL66N
82801BA ICH A1 SL66K
N82802AB8 4Mbit FWH A0
A1
SB48
3. Refer to the IntelPentium4 Processor Specification Update (Order Number 249199) for errata related to the Pentium 4
processor and that may apply to the desktop board D845EPT2.
4. Refer to the Intel845 Chipset: 82845 Memory Controller Hub E (MCH) for DDR Specification Update (Order Number
298603) for errata related to the 82845 MCH that may apply to the desktop board D845EPT2.
5. Refer to the Intel82801DB I/O Controller Hub 4 (ICH4) Specification Update (Order Number 290745) for errata related to
the 82801DB I/O Controller Hub that may apply to the desktop board D845EPT2.

IntelDesktop Board D845EPT2 Specification Update
4
Summary Table of Changes
The following table indicates the Specification Changes, Errata, Specification Clarifications, or Documentation
Changes that apply to the desktop board D845EPT2. Intel intends to fix some of the errata in a future
revision of the desktop board, and to account for the other outstanding issues through documentation or
specification changes as noted. This table uses the following notations:
CODES USED IN SUMMARY TABLE
Doc: Document change or update that will be implemented.
PlanFix: This erratum is intended to be fixed in a future revision of the desktop board,
driver, or BIOS.
Fixed: This erratum has been previously fixed.
NoFix: There are no plans to fix this erratum.
Shaded: This erratum is either new or modified from the previous version of the document.
NO. PLANS ERRATA
1 Fixed Intel82801DB I/O Controller Hub 4 (ICH 4) erratum 7
2 PlanFix Wake From an ACPI Sleep State Using Wake Methodologies May Fail
3 PlanFix Intel 82801DB I/O Controller Hub 4 (ICH 4) Erratum 8
4 PlanFix Supervisor password cleared when 256MB or greater system memory is used
NO. PLANS DOCUMENTATION CHANGES
1 Doc Change to description of Table 40, Section 2.8.3, External I/O Connectors
2 Doc Removed note that specifies USB 2.0 Support limited to Windows* 2000 and Windows XP
from Section 1.8.2, USB
3 Doc Removed ESCD format reference from Section 3.3.1, PCI Autoconfiguration
4 Doc Add Alert Standard Format Specification Version 1.03 Dated June 20, 2001 to Section 1.5,
Design Specifications.

IntelDesktop Board D845EPT2 Specification Update
5
ERRATA
1. Intel®82801DB I/O Controller Hub 4 (ICH 4) Erratum 7
PROBLEM:For a complete description of the ICH 4 erratum 7, see the Intel82801DB I/O Controller Hub 4
(ICH 4) Specification Update, order number 290745 found at
http://developer.intel.com/design/chipsets/specupdt.
IMPLICATION:For a complete description of the ICH 4 erratum 7, see the Intel 82801DB I/O Controller Hub 4
(ICH 4) Specification Update, order number 290745 found at
http://developer.intel.com/design/chipsets/specupdt.
WORKAROUND:None.
STATUS:This erratum was fixed in the B0 chipset stepping.
2. Wake From an ACPI Sleep State Using Wake Methodologies May
Fail
PROBLEM:The desktop board hardware leaves the LAN RESET (LAN_RST#) signal unasserted before and
after the resume well power (VccSus3_3 and VccSus1_5) is valid, instead of asserting it for 10 ms after valid
power, which is required by the Intel 82801DB I/O Controller Hub 4 (ICH4) Datasheet (order number 290744).
The result is that LAN wake attempts may fail.
NOTE: Wake from LAN* using the MagicPacket* utility will not be affected by this errata.
IMPLICATION:Users that take advantage of LAN wake methods to wake systems from an ACPI sleep state
may experience some wake failures.
WORKAROUND:None.
STATUS:This erratum may be fixed in a future BIOS revision.
3. Intel 82801DB I/O Controller Hub 4 (ICH 4) Erratum 8
PROBLEM:For a complete description of the ICH 4 erratum 8, see the Intel 82801DB I/O Controller Hub 4
(ICH 4) Specification Update, order number 290745 found at
http://developer.intel.com/design/chipsets/specupdt.
IMPLICATION:For a complete description of the ICH 4 erratum 8, see the Intel 82801DB I/O Controller Hub 4
(ICH 4) Specification Update, order number 290745 found at
http://developer.intel.com/design/chipsets/specupdt.
WORKAROUND:None.
STATUS:This erratum may be fixed in a future chipset stepping.

IntelDesktop Board D845EPT2 Specification Update
6
4. Supervisor Password Cleared When 256MB or Greater System
Memory is Used
PROBLEM:If 256MB or more system memory is added to a system the Supervisor password is cleared.
IMPLICATION:Supervisor password cannot be used with 256MB or more of system memory.
WORKAROUND:None.
STATUS:This erratum may be fixed in a future BIOS revision.

IntelDesktop Board D845EPT2 Specification Update
7
DOCUMENTATION CHANGES
The Documentation Changes listed in this section apply to the Desktop Board D845EPT2 Technical Product
Specification (Order Number A84913). All Documentation Changes will be incorporated into a future version
of that specification.
1. Change to Description of Table 40, Section 2.8.3, External I/O
Connectors
Table 40, Section 2.8.3, External I/O Connectors will change in its entirety as follows:
Table 1. Front Panel Audio Connector
Pin Signal Name Pin Signal Name
1 MIC_IN_FP 2 Ground
3 MIC_BIAS 4 V_5P0_AUD_ANALOG
5 R_FNTOUT 6 R_RETIN
7 Not Connected 8 Key
9 L_FNT_OUT 10 L_RETIN
2. Removed Note That Specifies USB 2.0 Support Limited to
Windows* 2000 and Windows XP From Section 1.8.2, USB
The following note will be removed in its entirety from Section 1.8.2, USB:
✏ NOTE
USB 2.0 support has been tested with Windows 2000 and Windows XP drivers
and is not currently supported by any other operating system.
3. Removed ESCD Format Reference From Section 3.3.1, PCI
Autoconfiguration
Remove the sentence “Autoconfiguration information is stored in ESCD format.”from Section 3.3.1, PCI
Autoconfiguration.

IntelDesktop Board D845EPT2 Specification Update
8
4. Add Alert Standard Format Specification Version 1.03 Dated
June 20, 2001 to Section 1.5, Design Specifications
The following specification will be added to table 4, Section 1.5, Design Specifications:
Reference
Name
Specification
Title
Version, Revision Date,
and Ownership
The information is
available from…
ASF Alert Standard
Format Specification
Version 1.03,
June 20, 2001,
Distributed Management
Task Force (DMTF).
http://www.dmtf.org/standards/
documents/ASF/DSP0114.pdf