307013-003 Datasheet, PDF (675/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

PCI Express* Configuration Registers (Desktop and Mobile Only)
18.1.20 INTR—Interrupt Information Register
(PCI Express—D28:F0/F1/F2/F3/F4/F5)
Address Offset: 3Ch–3Dh
Default Value: See bit description
Attribute:
Size:
R/W, RO
16 bits
Bit
Description
Interrupt Pin (IPIN) — RO. This field indicates the interrupt pin driven by the root
port. At reset, this register takes on the following values that reflect the reset state of
the D28IP register in chipset configuration space:
15:8
Port
1
2
3
4
5
6
Reset Value
D28IP.P1IP
D28IP.P2IP
D28IP.P3IP
D28IP.P4IP
D28IP.P5IP
D28IP.P6IP
NOTE: The value that is programmed into D28IP is always reflected in this register.
Interrupt Line (ILINE) — R/W. Default = 00h. This field is a software written value to
7:0 indicate which interrupt line (vector) the interrupt is connected to. No hardware action
is taken on this register.
Intel ^® ICH7 Family Datasheet
675