Compaq W4000 Manual De Usuario
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
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
C
T
Tabl
LPC Bridge Configuration Registers
(ICH2, Function 0, Device 31)
Config.
Reset
PCI
Config.
Config.
PCI
Addr.
Register
Value
Addr.
Register
Reset
Value
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