82801FB Datasheet, PDF (688/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

PCI Express* Configuration Registers
19.1.22
CLIST—Capabilities List Register
(PCI Express—D28:F0/F1/F2/F3)
Address Offset: 40–41h
Default Value: 8010h
Attribute:
Size:
RO
16 bits
Bit
Description
15:8 Next Capability (NEXT) — RO. Value of 80h indicates the location of the next pointer.
7:0 Capability ID (CID) — RO. This field indicates this is a PCI Express* capability.
19.1.23
XCAP—PCI Express* Capabilities Register
(PCI Express—D28:F0/F1/F2/F3)
Address Offset: 42–43h
Default Value: 0041h
Attribute:
Size:
R/WO, RO
16 bits
Bit
Description
15:14
13:9
8
7:4
3:0
Reserved
Interrupt Message Number (IMN) — RO. The Intel^® ICH6 does not have multiple MSI interrupt
numbers.
Slot Implemented (SI) — R/WO. This field indicates whether the root port is connected to a slot.
Slot support is platform specific. BIOS programs this field, and it is maintained until a platform reset.
Device / Port Type (DT) — RO. This field indicates this is a PCI Express* root port.
Capability Version (CV) — RO. This field indicates PCI Express 1.0.
688
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet