Compaq W4000 - Manual (Page 63)

Technical Reference Guide
4.2.7 PCI CONFIGURATION
A
ions. These
he ICH2
able 4-4. LPC Bridge Configuration Registers (ICH2, Function 0)
e 4-4.
PCI bus operations requi
hannel configuration, R
onfiguration is provi
re the co ration of certain parameters such as PCI IRQ routing, DM
TC control, port decode ranges, and power management opt
ded by BIOS at power-up but re-configurable by software.
nfigu
c
parameters are handl
om
ed by the LPC I/F bridge function (PCI function #0, device 31) of t
ponent and configured through the PCI configuration space registers listed in Table 4-4. c
C
T
Tabl
LPC Bridge Configuration Registers
(ICH2, Function 0, Device 31)
Config. Reset
PCI
Config. PCI
Addr. Register Value Addr. Register
Reset
Value
00, 01h Vendor ID 8086h Device 31 Error Status 00h 8Ah
02, 03h Device ID MA Configuration 0000h 2440h 90, 91h PCI D
00 -CF we 04, 05h an Comm d 0 Fh A0 h Po Mana ent
06, 07h 28 -D ne Status 0 0h D0 3h Ge l Con 0’s
08h on 00 D4-D7 Revisi ID h h F00
0A-0Bh ass Co 010 Cl de 6h D8h RTC onfig on 00h
0Eh ader T 80 E0h C He ype h LP OM P Dec. Ran 00h
40-43h Bas 1 ACPI e Address E1h LPC FDD & LPT Dec. Rge 00h
44h Con 00 ACPI trol h E2h LPC Audio Dec. Range 80h
4E, 4Fh Con 000 FWH BIOS trol 0h E3h eco nable FFh
54h Con 00 4, E I TCO trol h E 5h LPC De Range 1 0000
58-5Bh as 1 6, E I GPIO B e Address E 7h LPC Ena 0000
5Ch o 00 EB GPIO C ntrol h E8- h FW 001122
60-63h R . 0h E INTA-D outing Cntrl 8 [1] EC, Dh 0000
64h RQ 10 E FW Serial I Control h EE, Fh 5678
68-6B E-F R Cntrl. 0h FW INT outing 8 [1] F0h 0Fh
88h . 31 E 00 ct Dev rror Config. h F2h Fun n Di Regis 00h
[1] Va each b
l Assum arked s/ga as rese
r gem
ra trol
General Status h
C urati
C ort ge
D de E
/F code h
/F bles h
H Select 1 33
LPC I/F Decode Range 2 h
H Select 2 h
H Decode Enable 2
io sable ter
NOTE:
lue for yte.
e unm ocation ps rved.
Compaq Evo and Workstation Personal Computers
Featuring the Intel Pentium 4 Processor
Second Edition - January 2003
4-9