82598EB Datasheet, PDF (107/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - PCIe
Device Serial Number Enhanced Capability Header (Offset 0x00)
Table 3-32 lists the allocation of register fields in the device serial number enhanced capability header.
It provides the respective bit definitions. Section 3.1.1.14.8 for a description of the PCIe enhanced
capability header. The extended capability ID for the device serial number capability is 0x0003.
31:20
Next Capability Offset
19:16
Capability Version
15:0
PCIe Extended Capability ID
Table 3-32. Device Serial Number Enhanced Capability Header
Bit(s)
Location
15:0
19:16
31:20
Attributes
RO
RO
RO
Description
PCIe Extended Capability ID. This field is a PCI-SIG defined ID number that indicates the
nature and format of the extended capability.
The extended capability ID for the device serial number capability is 0x0003.
Capability Version. This field is a PCI-SIG defined version number that indicates the version
of the capability structure present.
Note: Must be set to 0x1 for this version of the specification.
Next Capability Offset. This field contains the offset to the next PCIe capability structure or
0x000 if no other items exist in the linked list of capabilities.
For extended capabilities implemented in the device configuration space, this offset is
relative to the beginning of PCI-compatible configuration space and must always be either
0x000 (for terminating list of capabilities) or greater than 0x0FF.
Serial Number Register (Offset 0x04)
The Serial Number register is a 64-bit field that contains the IEEE defined 64-bit Extended Unique
Identifier (EUI-64*). Figure 3-7 details the allocation of register fields in the Serial Number register.
The table that follows Figure 3-7 lists the respective bit definitions.
31:0
Serial Number Register (Lower Dword).
Serial Number Register (Upper Dword).
63:32
Figure 3-7. Serial Number Register Contents
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