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Software Developer’s Manual 101
EEPROM Interface
Word
Used
By
Bit
15 - 8
Bit
7 - 0
Image
Value
LAN
A/B
25h
26h
HW
IPv4 Address Byte 2
IPv4 Address Byte 4
IPv4 Address Byte 1
IPv4 Address Byte 3
IP(2,1)
IP(4,3)
LAN A
27h
28h
29h
2Ah
2Bh
2Ch
2Dh
2Eh
HW
IPv6 Address Byte 2
IPv6 Address Byte 4
IPv6 Address Byte 6
IPv6 Address Byte 8
IPv6 Address Byte 10
IPv6 Address Byte 12
IPv6 Address Byte 14
IPv6 Address Byte 16
IPv6 Address Byte 1
IPv6 Address Byte 3
IPv6 Address Byte 5
IPv6 Address Byte 7
IPv6 Address Byte 9
IPv6 Address Byte 11
IPv6 Address Byte 13
IPv6 Address Byte 15
IP(2,1)
IP(4,3)
IP(6,5)
IP(8,7)
IP(10,9)
IP(12,11)
IP(14,13)
IP(16,15)
LAN A
2Fh HW LEDCTL Default 0602h both
30h
31h
32h
33h
34h
...
3Eh
Firm-
ware
Intel Boot Agent Configuration
…
Note: Words 34h and 35h are not applicable to the 82545GM/EM
and 82540EP/EM
3Fh Software Checksum, words 00h through 3Fh
40h
...
F7h
ASF Controlled by the ASF Agent
F8h
...
FFh
Free for Software
a. The lower bit of the last byte is complemented for LAN B.
b. The SMBus Address is a 7-bit value that is found in bits 7 through 1 of this byte. Bit 0 should be 0b.
Table 5-2. Ethernet Controller Address Map