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Intel
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82575EB Gigabit Ethernet Controller — PCI Power Management Registers
Intel
®
82575EB Gigabit Ethernet Controller 324632-003
Software Developer’s Manual and EEPROM Guide Revision: 2.1
212 January 2011
Serial Number Register (Offset 148h:144h)
The Serial Number register is a 64-bit field that contains the IEEE defined 64-bit extended unique
identifier (EUI-64*). The following tables detail the allocation of register fields as well as their
respective bit definitions in the Serial Number register.
Serial Number Definition in the 82575
In the 82575, the serial number uses the MAC address according to the following definition.
The serial number can be constructed from the 48-bit MAC address in the following form:
The MAC label in this case is FFFFh. For example, the vendor is Intel and the vendor ID is 00-A0-C9,
and the extension identifier, 23-45-67. In this case, the 64-bit serial number is:
The MAC address is the function 0 MAC address as loaded from EEPROM into the RAL and RAH
registers.
The translation from EEPROM words 0h to 2h to the serial number is as follows:
• Serial number ADDR + 0, 1 = EEPROM word 0
Table 76. Device Serial Number Enhanced Capability Header
Bits 63:32 Serial Number Register (Upper Dword)
Bits 31:0 Serial Number Register (Lower Dword)
Table 77. Serial Number Register
Bit(s) Attributes Description
63:0 RO PCIe* Device Serial Number
This field contains the IEEE defined 64-bit extended unique identifier (EUI-64*). This identifier
includes a 24-bit company identification value assigned by IEEE registration authority and a 40-bit
extension identifier assigned by the manufacturer.
Field Company ID Extension identifier
Order Addr+0 Addr+1 Addr+2 Addr+3 Addr+4 Addr+5 Addr+6 Addr+7
Most Significant Byte Least Significant Byte
Most Significant Bit Least Significant Bit
Field Company ID MAC Label Extension identifier
Order Addr+0 Addr+1 Addr+2 Addr+3 Addr+4 Addr+5 Addr+6 Addr+7
Most Significant Bytes Least Significant Byte
Most Significant Bit Least Significant Bit
Field Company ID MAC Label Extension identifier
Order Addr+0 Addr+1 Addr+2 Addr+3 Addr+4 Addr+5 Addr+6 Addr+7
00 A0 C9 FF FF 23 45 67
Most Significant Byte Least Significant Byte
Most Significant Bit Least Significant Bit