307013-003 Datasheet, PDF (256/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Register and Memory Mapping
Table 6-2.
Fixed I/O Ranges Decoded by Intel^® ICH7 (Sheet 1 of 2)
I/O
Address
Read Target
Write Target
00h–08h
09h–0Eh
0Fh
10h–18h
19h–1Eh
1Fh
20h–21h
24h–25h
28h–29h
2Ch–2Dh
2E–2F
30h–31h
34h–35h
38h–39h
3Ch–3Dh
40h–42h
43h
4E–4F
50h–52h
53h
60h
61h
62h
64h
66h
70h
71h
72h
73h
74h
75h
76h
77h
80h
81h–83h
DMA Controller
RESERVED
DMA Controller
DMA Controller
RESERVED
DMA Controller
Interrupt Controller
Interrupt Controller
Interrupt Controller
Interrupt Controller
LPC SIO
Interrupt Controller
Interrupt Controller
Interrupt Controller
Interrupt Controller
Timer/Counter
RESERVED
LPC SIO
Timer/Counter
RESERVED
Microcontroller
NMI Controller
Microcontroller
Microcontroller
Microcontroller
RESERVED
RTC Controller
RTC Controller
RTC Controller
RTC Controller
RTC Controller
RTC Controller
RTC Controller
DMA Controller, or LPC, or
PCI
DMA Controller
DMA Controller
DMA Controller
DMA Controller
DMA Controller
DMA Controller
DMA Controller
Interrupt Controller
Interrupt Controller
Interrupt Controller
Interrupt Controller
LPC SIO
Interrupt Controller
Interrupt Controller
Interrupt Controller
Interrupt Controller
Timer/Counter
Timer/Counter
LPC SIO
Timer/Counter
Timer/Counter
Microcontroller
NMI Controller
Microcontroller
Microcontroller
Microcontroller
NMI and RTC Controller
RTC Controller
NMI and RTC Controller
RTC Controller
NMI and RTC Controller
RTC Controller
NMI and RTC Controller
RTC Controller
DMA Controller and LPC or
PCI
DMA Controller
Internal Unit
DMA
DMA
DMA
DMA
DMA
DMA
Interrupt
Interrupt
Interrupt
Interrupt
Forwarded to LPC
Interrupt
Interrupt
Interrupt
Interrupt
PIT (8254)
PIT
Forwarded to LPC
PIT
PIT
Forwarded to LPC
Processor I/F
Forwarded to LPC
Forwarded to LPC
Forwarded to LPC
RTC
RTC
RTC
RTC
RTC
RTC
RTC
RTC
DMA
DMA
256
Intel ^® ICH7 Family Datasheet