82801BA Datasheet, PDF (228/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

LAN Controller Registers (B1:D8:F0)
7.1.1
7.1.2
7.1.3
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 Number. This is a 16-bit value assigned to Intel.
DID—Device ID Register (LAN Controller—B1:D8:F0)
Offset Address: 02–03h
Default Value: 2449h
Attribute:
Size:
RO
16 bits
Bit
Description
15:0
Device Identification Number. This is a 16 bit value assigned to the ICH2 integrated LAN
Controller.
PCICMD—PCI Command Register
(LAN Controller—B1:D8:F0)
Offset Address: 04–05h
Default Value: 0000h
Attribute:
Size:
RO, R/W
16 bits
Bit
15:10
9
8
7
6
5
4
3
2
1
0
Description
Reserved.
Fast Back to Back Enable (FBE)—RO. Hardwired to 0. The integrated LAN Controller will not run
fast back-to-back PCI cycles.
SERR# Enable (SERR_EN)—R/W.
1 = Enable. Allow SERR# to be generated.
0 = Disable.
Wait Cycle Control (WCC)—RO. Hardwired to 0. Not implemented.
Parity Error Response (PER)—R/W
1 = The integrated LAN Controller will take normal action when a PCI parity error is detected. The
generation of parity is also enabled on the hub interface.
0 = The LAN Controller will ignore PCI parity errors.
VGA Palette Snoop (VPS)—RO. Hardwired to 0. Not Implemented.
Memory Write and Invalidate Enable (MWIE)—R/W.
0 = Disable. The LAN Controller will not use the Memory Write and Invalidate command.
1 = Enable.
Special Cycle Enable (SCE)—RO. Hardwired to 0. The LAN Controller ignores special cycles.
Bus Master Enable (BME)—R/W.
1 = Enable. The ICH2’s integrated may function as a PCI bus master.
0 = Disable.
Memory Space Enable (MSE)—R/W.
1 = Enable. The ICH2’s integrated LAN Controller will respond to the memory space accesses.
0 = Disable.
I/O Space Enable (IOE)—R/W.
1 = Enable. The ICH2’s integrated LAN Controller will respond to the I/O space accesses.
0 = Disable.
7-2
82801BA ICH2 and 82801BAM ICH2-M Datasheet