Intel® Desktop Board
D945GCLF
Specification Update
July 2010
Order Number: E47517-008US
The Intel® Desktop Board D945GCLF may contain design defects or errors known as errata, which may cause the product to deviate
from published specifications. Current characte rized errata are documented in this Specification Update.
Revision History
Revision Revision History Date
-001 This document is the first Specification Update for the Intel® Desktop
Board D945GCLF
-002 Updated the Documentation Changes Section July 2008
-003 Updated the General Information Section October 2008
-004 Updated the General Information Section February 2009
-005 Updated the General Information Section June 2009
-006 Updated the General Information Section August 2009
-007 Updated the General Information Section December 2009
-008 Updated the General Information Section July 2010
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July 2008
®
PRODUCTS. NO LICENSE,
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®
The Intel
the product to deviate from published specifications. Current characterized errata are available on request.
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Desktop Board D945GCLF may contain design defects or errors known as errata which may cause
2 Intel Desktop Board D945GCLF Specification Update
Contents
Specification Update for the Intel® Desktop Board D945GCLF
Terminology ............................................................................................5
General Information .................................................................................6
Summary of Changes ............................................................................... 7
Specification Changes...............................................................................8
Intel Desktop Board D945GCLF Specification Update
3
Specification Update for the
Intel
®
Desktop Board D945GCLF
This document is an update to the specifications contained in the Intel® Desktop Board
D945GCLF Technical Product Specification (Order Number E35968). It is intended for
hardware system manufacturers and software developers of applications, operating
systems, or tools. It will contain Specification Changes, Errata, Specificat ion
Clarifications, and Documentation Changes.
For specification updates concerning the Intel processor that apply to this desktop
board, refer to the following:
®
Intel
Atom™ Processor 200 Series Specification Update (Order Number 319978)
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
307503) for specification updates concerning the 82945GC GMCH Controller and that
may apply to the desktop board D945GCLF. 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
Number 307014) for specification updates concerning the 82801GB I/O Controller Hub
and that may apply to the desktop board D945GCLF. Unless otherwise noted in this
document, it should be assumed that any ICH7 errata for a given stepping are
applicable to the Altered Assembly (AA) revision(s) associated with that stepping.
®
945 Express Chipset Family Specification Update (Order Number
®
I/O Controller Hub7 (ICH7) Family Specification Update (Order
4 Intel Desktop Board D945GCLF Specification Update
Terminology
Specification Changes are modifications to the current published specifications.
These changes will be incorporated in the next release of the specif ications.
Errata are design defects or errors. Characterized errata may cause the desktop
board 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.
Intel Desktop Board D945GCLF Specification Update
5
General Information
Basic Desktop Board D945GCLF Identification Information
AA Revision BIOS Revision Notes
E27042-301 LF94510J.86A.0038 1,2
E27042-302 LF94510J.86A.0038 1,2
E27042-303 LF94510J.86A.0038 1,2
E27042-304 LF94510J.86A.0038 1,2
E27042-305 LF94510J.86A.0067 1,2
E27042-400 LF94510J.86A.0099 1,2
E27042-401 LF94510J.86A.0099 1,2
E27042-402 LF94510J.86A.0099 1,2
E27042-403 LF94510J.86A.0140 1,2
E27042-404 LF94510J.86A.0140 1,2
E27042-405 LF94510J.86A.0171 1,2
E27042-406 LF94510J.86A.0182 1,2
E27042-407 LF94510J.86A.0229 1,2
E27042-408 LF94510J.86A.0229 1,2
E27044-303 LF94510J.86A.0038 1,2
E27044-304 LF94510J.86A.0038 1,2
E27044-305 LF94510J.86A.0038 1,2
E27044-306 LF94510J.86A.0038 1,2
E27044-307 LF94510J.86A.0067 1,2
E27044-400 LF94510J.86A.0099 1,2
E27044-401 LF94510J.86A.0099 1,2
E27044-402 LF94510J.86A.0099 1,2
E27044-403 LF94510J.86A.0140 1,2
E27044-404 LF94510J.86A.0140 1,2
E27044-405 LF94510J.86A.0171 1,2
E27044-406 LF94510J.86A.0182 1,2
E27044-407 LF94510J.86A.0229 1,2
E27044-408 LF94510J.86A.0229 1,2
Notes:
1. The AA number is found on a small label on the component side of the board.
2. The 945 Chipset kit used on this AA revision consists of two components as follows:
Device Stepping S-Spec Numbers
82945GC A2 SLA9C
82801GB A1 SL8FX
6 Intel Desktop Board D945GCLF Specification Update
Summary of Changes
The following table indicates the Specification Changes, Errata, Specification
Clarifications, or Documentation Changes that apply to the Intel
®
Desktop Board
D945GCLF. 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.
The following notations are used in the table:
Doc: Document change or update that will be implemented.
Plan Fix: This erratum may be fixed in a future revision of the desktop board, driver, or BIOS.
Fixed: This erratum has been previously fixed.
No Fix: 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 Documentation Changes
1 Doc Correction of a Table reference number in Section 2.5.1 of the Technical Product
Specification
No. Plans Errata
There are no characterized erratum for this product
Intel Desktop Board D945GCLF Specification Update
7
Specification Changes
Changes to the feature description in the board technical product specification.
Typically the customer does not have to do anything to achieve proper device
functionality as a result of the change.
1. Correction of a Table reference number in Section 2.5.1 of the Technical
Specification.
2.5.1 Power Supply Considerations
CAUTION
The +5 V standby line from the power supply must be capable of providing adequate
+5 V standby current. Failure to do so can damage the power supply. The total
amount of standby current required depends on the wake devices supported and
manufacturing options.
Additional power required will depend on configurations chosen by the integrator.
The power supply must comply with the indicated parameters of the ATX form factor
specification.
• The potential relation between 3.3 VDC and +5 VDC power rails
• The current capability of the +5 VSB line
• All timing parameters
• All voltage tolerances
For example, for a system consisting of a D945GCLF board (with integrated Intel
Atom processor at 4 W), 2 GB DDR2 RAM, one hard disk drive, one optical drive, and
all board peripherals enabled, the minimum recommended power supply is 75 W.
Table 21 lists the recommended power supply current values.
®
Table 21. Recommended Power Supply Current Values
Output Voltage
Current
3.3 V 5 V 12 V1 12 V2 -12 V 5 VSB
0.51 A 7.75 A 0.52 A 0.32 A 0.018 A 0.3 A
8 Intel Desktop Board D945GCLF Specification Update
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