Internal Lan Layout Guidelines; Footprint Compatibility; Table 57. Lan Component Connections/Features - Intel 855PM Design Manual

I/O Subsystem
9.9.

Internal LAN Layout Guidelines

The Intel 82801DBM ICH4-M provides several options for LAN capability. The platform supports
several components depending upon the target market. Available LAN components include the Intel
82540EP Gigabit Ethernet Controller, Intel
Intel 82562EM Platform LAN Connect components.
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Table 57. LAN Component Connections/Features

LAN Component
Intel 82540EP (196 BGA)
Intel 82551QM (196 BGA)
Intel 82562EM (48 Pin SSOP)
Intel 82562ET (48 Pin SSOP)
Design guidelines are provided for each required interface and connection.
9.9.1.

Footprint Compatibility

The Intel 82540EP Gigabit Ethernet Controller and the Intel 82551QM Fast Ethernet Controller are all
manufactured in a footprint compatible 15 mm x 15 mm (1-mm pitch), 196-ball grid array package.
Many of the critical signal pin locations on the 82540EP and the 82551QM are identical, allowing
designers to create a single design that accommodates any one of these parts. Because the usage of some
pins on the 82540EP differ from the usage on the 82551QM, the parts are not referred to as "pin
compatible." The term "footprint compatible" refers to the fact that the parts share the same package
size, same number and pattern of pins, and layout of signals that allow for the flexible, cost effective,
multipurpose design.
Design guidelines are provided for each required interface and connection. Refer to the following
figures and the subsequent table for the corresponding section of this design guide.
212
82551QM Fast Ethernet Controller, Intel
®
Interface to Connection
ICH4-M
PCI Gigabit Ethernet
(1000BASE-T) with
Alert Standard Format
(ASF) alerting
PCI Performance 10/100
Ethernet with ASF
alerting
LCI Advanced 10/100
Ethernet
LCI Basic 10/100 Ethernet
Intel
82562ET, and
®
Features
Gigabit Ethernet, ASF 1.0
alerting, PCI 2.2 compatible
Ethernet 10/100 connection,
ASF 1.0 alerting, PCI 2.2
compatible
Ethernet 10/100 connection,
Alert on LAN* (AoL)
Ethernet 10/100 connection
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855PM Chipset Platform Design Guide
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