82598EB Datasheet, PDF (18/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - PCIe Interface
1.9.1 PCIe Interface
The PCIe v2.0 (2.5 GT/s) interface is used by the 82598EB as a host interface. It supports x8, x4, x2
and x1 configurations at a speed of 2.5 GHz. The maximum aggregated raw bandwidth for typical an x8
configuration is 16 Gb/s in each direction. Refer to other sections in this document for a full pin
description and interface timing characteristics.
1.9.2 XAUI Interfaces
Two independent XAUI interfaces are used to connect two ports to external devices. They can be
configured as an XAUI interface that connects directly to another XAUI compliant device, as a
10GBASE-KX4 interface that connects over a backplane to another KX4 compliant device, or a
10GBASE-CX4 interface that attaches to a CX4 compliant cable.
The 82598EB supports IEEE 802.3ae (10 Gb/s) implementations. It performs all of the functions
required for transmission and reception handling called out in the standards for an XAUI media
interface. It also supports IEEE 802.3ak, IEEE 802.3ap (KX and KX4 only), and PICMG3.1 (BX only)
implementations including an auto-negotiation layer and PCS layer synchronization.
The interface can be configured to operate in 1 Gb/s mode of operation (BX and KX). One of the 4 XAUI
lanes (lane 0) is used in 1 Gb/s mode.
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