82546GB Datasheet, PDF (5/16 Pages) Intel Corporation – Gigabit Ethernet Controller Specification Update

82546GB GIGABIT ETHERNET CONTROLLER SPECIFICATION UPDATE
PREFACE
This document is an update to published specifications. Specification documents for these products include:
• 82546GB Gigabit Ethernet Controller Datasheet.
• 82545EM, 82545GM, 82546EB, 82546GB Gigabit Ethernet Controllers Design Guide, Ap-439.
• 8254x Family of Gigabit Ethernet Controllers Software Developer’s Manual + Appendices for 82546GB, 82545EM,
82540EM, 82544EI/GC
This document is intended for hardware system manufactures and software developers of applications, operating systems or tools.
It may contain Specification Changes, Errata, and Specification Clarifications.
All 82546GB product documents are subject to frequent revision, and new order numbers will apply. New documents may be added.
Be sure you have the latest information before finalizing your design.
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. Errata may cause device behavior to deviate from published specifications. Hardware and
software designed to be used with any given stepping must assume that all errata documented for that stepping are present on all
devices.
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.
COMPONENT IDENTIFICATION VIA PROGRAMMING INTERFACE
82546GB controller steppings will be identified by the following register contents:
Stepping
82546GB A0
-
Vendor ID
8086h
-
Device ID
1079h
-
Revision Number
00h
-
These devices also provide identification data through the Test Access Port.
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