82801BA Datasheet, PDF (264/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

LPC Interface Bridge Registers (D31:F0)
Table 9-1. PCI Configuration Map (LPC I/F—D31:F0) (Continued)
Offset
D0h–D3h
D4h–D7h
D8h
E0h
E1h
E2h
E3h
E4h–E5h
E6h–E7h
E8h–EBh
ECh–EDh
EEh–EFh
F0h
F2h
Mnemonic
Register Name
GEN_CNTL General Control
GEN_STS General Status
RTC_CONF Real Time Clock Configuration
COM_DEC LPC I/F COM Port Decode Ranges
LPCFDD_DEC LPC I/F FDD & LPT Decode Ranges
SND_DEC LPC I/F Sound Decode Ranges
FWH_DEC_EN1 FWH Decode Enable 1
GEN1_DEC
LPC_EN
LPC I/F General 1 Decode Range
LPC I/F Enables
FWH_SEL1 FWH Select 1
GEN2_DEC LPC I/F General 2 Decode Range
FWH_SEL2 FWH Select 2
FWH_DEC_EN2 FWH Decode Enable 2
FUNC_DIS Function Disable Register
Default
00000000h
00000F00h
00h
00h
00h
00h
FFh
0000h
00h
00112233h
0000h
5678h
0Fh
00h
NOTE: Refer to the Specification Update for the value of the Revision ID Register.
9.1.1
VID—Vendor ID Register (LPC I/F—D31:F0)
Offset Address:
Default Value:
Lockable:
00–01h
8086h
No
Attribute:
Size:
Power Well:
RO
16-bit
Core
Bit
Description
15:0 Vendor ID Value. This is a 16 bit value assigned to Intel. Intel VID = 8086h
9.1.2
DID—Device ID Register (LPC I/F—D31:F0)
Offset Address:
Lockable:
Default Value:
02–03h
No
2440h (82801BA ICH2)
244Ch (82801BAM ICH2-M)
Attribute:
Size:
Power Well:
RO
16-bit
Core
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit
Description
15:0 Device ID Value. This is a 16 bit value assigned to the ICH2 LPC Bridge.
9-2
82801BA ICH2 and 82801BAM ICH2-M Datasheet