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82562ET(EM) and 82562GT(G) LAN on Motherboard Design Guide Application Note (AP-414)

Revision 2.1 April 2005 ® INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. INTEL PRODUCTS ARE NOT INTENDED FOR USE IN MEDICAL, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS. Intel may make changes to specifications and product descriptions at any time, without notice. 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. The Intel product(s) described herein 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 and 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 obtained by calling 1-800- 548-4725 or by visiting Intel's Web site at http://www.intel.com. Copyright © 2005 Intel Corporation * Other product and corporate names may be trademarks of other companies and are used only for explanation and to the owners’ benefit, without intent to infringe. Application Note (AP-414) 82562G/GT and 82562ET/EM LAN on Motherboard Design Guide Revision History Revision 1.1 2.0 2.1 Revision Date Mar 2003 Feb 2005 Apr 2005 Description • Removed confidential status. • Added product ordering code in Section 1.0. • Added 82562GT/G board design and layout information. • Removed the note “BIOS must delay driving LAN_RST# 10 ms after 3.3V and 1.5V SUS wells are valid” from the reference schematics. Application Note (AP-414) iii 82562G/GT and 82562ET/EM LAN on Motherboard Design Guide Note: This page is intentionally left blank. iv Application Note (AP-414) 82562G/GT and 82562ET/EM LAN on Motherboard Design Guide Contents 1.0 2.0 3.0 Introduction .............................................................................................. 1 1.1 Scope .......................................................................................................................1 1.2 Terms.......................................................................................................................1 1.3 Reference Documents .............................................................................................2 1.4 Product Codes .........................................................................................................3 1.5 Usage Modes for the 82562G/GT ............................................................................3 1.5.1 Mode 0: Drop-in Replacement ......................................................................3 1.5.2 Modes 1, 2, 3, and 4: New Features .............................................................3 Frequency Control Device Design Considerations .............................. 5 2.1 Frequency Control Component Types .....................................................................5 2.2 Quartz Crystal ..........................................................................................................5 2.3 Fixed Crystal Oscillator ............................................................................................5 2.4 Programmable Crystal Oscillators............................................................................6 2.5 Ceramic Resonator ..................................................................................................6 Ethernet Component Design Guidelines ............................................... 7 3.1 3.2 3.3 3.4 3.5 General Design Considerations for Ethernet Controllers .........................................7 3.1.1 Crystal Selection Parameters........................................................................7 3.1.2 Reference Crystal........................................................................................11 3.1.3 Reference Crystal Selection........................................................................11 3.1.4 Circuit Board................................................................................................11 3.1.5 Temperature Changes ................................................................................12 Analog References.................................................................................................12 Integrated Magnetics Module.................................................................................13 Designing with the Platform LAN Connect Device .................................................13 3.4.1 Power Supplies ...........................................................................................13 Read the full 82562ET(EM) and 82562GT(G) LAN on Motherboard Design Guide Application Note (AP-414).

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