307013-003 Datasheet, PDF (293/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Chipset Configuration Registers
7.1.50
Bit
Description
Interrupt A Pin Route (IAR) — R/W. This field indicates which physical pin on the
ICH7 is connected to the INTA# pin reported for device 28 functions.
0h = PIRQA# (Default)
1h = PIRQB#
2h = PIRQC#
3h = PIRQD#
2:0 4h = PIRQE#
5h = PIRQF#
6h = PIRQG#
7h = PIRQH#
NOTE: PIRQA#–PIRQD# are not on Ultra Mobile. Eventhough the register defaults to
a non-ICH7U pin routing, BIOS default sets the register for PIRQE#–PIRQH#.
D27IR—Device 27 Interrupt Route Register
Offset Address: 3148–3149h
Default Value: 3210h
Attribute:
Size:
R/W
16-bit
Bit
15
14:12
Description
Reserved
Interrupt D Pin Route (IDR) — R/W. This field indicates which physical pin on the
Intel^® ICH7 is connected to the INTD# pin reported for device 27 functions.
0h = PIRQA#
1h = PIRQB#
2h = PIRQC#
3h = PIRQD# (Default)
4h = PIRQE#
5h = PIRQF#
6h = PIRQG#
7h = PIRQH#
11
10:8
NOTE: PIRQA#–PIRQD# are not on Ultra Mobile. Eventhough the register defaults to
a non-ICH7U pin routing, BIOS default sets the register for PIRQE#–PIRQH#.
Reserved
Interrupt C Pin Route (ICR) — R/W. This field indicates which physical pin on the
ICH7 is connected to the INTC# pin reported for device 27 functions.
0h = PIRQA#
1h = PIRQB#
2h = PIRQC# (Default)
3h = PIRQD#
4h = PIRQE#
5h = PIRQF#
6h = PIRQG#
7h = PIRQH#
NOTE: PIRQA#–PIRQD# are not on Ultra Mobile. Eventhough the register defaults to
a non-ICH7U pin routing, BIOS default sets the register for PIRQE#–PIRQH#.
7
Reserved
Intel ^® ICH7 Family Datasheet
293