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Software Developer’s Manual 99
EEPROM Interface
Word
Used
By
Bit
15 - 8
Bit
7 - 0
Image
Value
LAN
A/B
0Dh HW Device ID
see Table
5-1 for
specific
image
values
LAN A
0Eh HW Vendor ID 8086h both
0Fh HW Init Control 2
3040h for
the
82545GM/
EM and
82540EP/
EM
B080h for
the
82541xx
and
82547GI/EI
both
10h
11h
SW
PHY Registers
82541xx and 82547GI/EI only
00BAh
0000h
N/A
10h HW
Software Defined Pins Control (82546GB/EB only)
Note: Words 10h, 11h, and 13h through 1Fh are reserved for the
82545GM/EM and 82540EP/EM
XXXXh LAN B
11h HW
Device ID
82546GB/EB only
see Table
5-1 for
specific
image
values
LAN B
12h HW
EEPROM Size
82541xx and 82547GI/EI only
N/A
12h HW Common Power both
13h
1Eh
SW
PHY Registers
82541xx and 82547GI/EI only
00BAh
0000h
N/A
13h HW Management Control LAN B
14h HW Init Control 3 SMBus Address
b
XXXXh LAN B
15h
16h
HW
IPv4 Address Byte 2
IPv4 Address Byte 4
IPv4 Address Byte 1
IPv4 Address Byte 3
IP(2,1)
IP(4,3)
LAN B
Table 5-2. Ethernet Controller Address Map