82801DB Datasheet, PDF (252/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4)

LAN Controller Registers (B1:D8:F0)
7.1.1
7.1.2
VID—Vendor ID Register (LAN Controller—B1:D8:F0)
Offset Address: 00–01h
Default Value: 8086h
Attribute:
Size:
RO
16 bits
Bit
Description
15:0 Vendor Identification Value — RO. This is a 16-bit value assigned to Intel.
DID—Device ID Register (LAN Controller—B1:D8:F0)
Offset Address: 02–03h
Default Value: 103Ah
Attribute:
Size:
RO
16 bits
Bit
Description
Device Identification Value — RO. This is a 16-bit value assigned to the Intel^® ICH4 integrated
LAN controller.
1. If the EEPROM is not present (or not properly programmed), reads to the Device ID return the
15:0
default value of 103Ah
2. If the EEPROM is present (and properly programmed) and if the value of Word 23h is not
0000f or FFFFh, the Device ID is loaded from the EEPROM, Word 23h after the hardware
reset. (See Section 7.1.14 for details)
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Intel^® 82801DB ICH4 Datasheet