307013-003 Datasheet, PDF (677/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

PCI Express* Configuration Registers (Desktop and Mobile Only)
18.1.22 CLIST—Capabilities List Register
(PCI Express—D28:F0/F1/F2/F3/F4/F5)
Address Offset: 40–41h
Default Value: 8010h
Attribute:
Size:
RO
16 bits
Bit
15:8
7:0
Description
Next Capability (NEXT) — RO. Value of 80h indicates the location of the next pointer.
Capability ID (CID) — RO. This field indicates this is a PCI Express* capability.
18.1.23 XCAP—PCI Express* Capabilities Register
(PCI Express—D28:F0/F1/F2/F3/F4/F5)
Address Offset: 42h–43h
Default Value: 0041h
Attribute:
Size:
R/WO, RO
16 bits
Bit
Description
15:14
13:9
Reserved
Interrupt Message Number (IMN) — RO. The Intel^® ICH7 does not have multiple
MSI interrupt numbers.
Slot Implemented (SI) — R/WO. This field indicates whether the root port is
8 connected to a slot. Slot support is platform specific. BIOS programs this field, and it is
maintained until a platform reset.
7:4 Device / Port Type (DT) — RO. This field indicates this is a PCI Express* root port.
3:0 Capability Version (CV) — RO. This field indicates PCI Express 1.0.
Intel ^® ICH7 Family Datasheet
677