82801CA Datasheet, PDF (240/521 Pages) Intel Corporation – I/O Controller Hub 3-S (ICH3-S)

LAN Controller Registers (B1:D8:F0)
7.1.13
SVID—Subsystem Vendor ID Register
(LAN Controller—B1:D8:F0)
Offset Address: 2C–2D
Default Value: 0000h
Attribute:
Size:
RO
16 bits
Bit
Description
15:0 Subsystem Vendor ID—RO.(see Section 7.1.14 for detail).
7.1.14
SID—Subsystem ID Register (LAN Controller—B1:D8:F0)
Offset Address: 2E–2Fh
Default Value: 0000h
Attribute:
Size:
RO
16 bits
Bit
15:0 Subsystem ID—RO.
Description
Note:
The ICH3’s integrated LAN Controller provides support for configurable Subsystem ID and
Subsystem Vendor ID fields. After reset, the LAN Controller automatically reads addresses Ah
through Ch, and 23h of the EEPROM. The LAN Controller checks bits 15:13 in the EEPROM
word Ah, and functions according to Table 7-2.
Table 7-2. Configuration of Subsystem ID and Subsystem Vendor ID via EEPROM
Bits 15:14 Bit 13 Device ID Vendor ID
11b, 10b,
00b
01b
01b
X
2449h
8086h
0b Word 23h 8086h
1b Word 23h Word Ch
Revision ID
See Note 1
See Note 1
See Note 1
Subsystem ID
0000h
Word Bh
Word Bh
Subsystem
Vendor ID
0000h
Word Ch
Word Ch
NOTE:
1. Refer to the Specification Update for the Revision ID, which is subject to change according to the silicon
stepping.
2. The Device ID is loaded from Word 23h only if the value of Word 23h is not 0000h or FFFFh
7.1.15
CAP_PTR—Capabilities Pointer Register
(LAN Controller—B1:D8:F0)
Offset Address: 34h
Default Value: DCh
Attribute:
Size:
RO
8 bits
Bit
Description
7:0
Capabilities Pointer (CAP_PTR)—RO. Hardwired to DCh to indicate the offset within configuration
space for the location of the Power Management registers.
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Intel^® 82801CA ICH3-S Datasheet