82598EB Datasheet, PDF (55/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - PCIe
3.1.1.1.1 Physical Interface Properties
• Point-to-point interconnect:
—Full-duplex; no arbitration
• Signaling technology:
—Low Voltage Differential (LVD)
—Embedded clock signaling using 8b/10b encoding scheme
• Serial frequency of operation: PCIe v2.0 (2.5GT/s).
• Interface width of x8, x4, x2 or x1.
• DFT and DFM support for high-volume manufacturing
3.1.1.1.2 Advanced Extensions
PCIe defines a set of optional features to enhance platform capabilities for specific modes. The 82598
supports the following optional features:
• Extended Error Reporting – Messaging support to communicate multiple types/severity of errors
• Device Serial Number
• Completion timeout
3.1.1.2 General Functionality
3.1.1.2.1 Native/Legacy
All 82598 PCI functions are native PCIe functions.
3.1.1.2.2 Locked Transactions
The 82598 does not support locked requests as a target or a master.
3.1.1.2.3 End-to-End CRC (ECRC)
This function is not supported by the 82598.
3.1.1.3 Host Interface
PCIe device numbers identify logical devices within the physical device (the 82598 is a physical device).
The 82598 implements a single logical device with two separate PCI functions: LAN 0 and LAN 1. The
device number is captured from each Type 0 configuration write transaction.
Each PCIe function interfaces with the PCIe unit through one or more clients. A client ID identifies the
client and is included in the Tag field of the PCIe packet header. Completions always carry the tag value
included in the request to enable routing of the completion to the appropriate client.
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