82801FB Datasheet, PDF (681/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

PCI Express* Configuration Registers
19.1.5
19.1.6
19.1.7
19.1.8
RID—Revision Identification Register
(PCI Express—D28:F0/F1/F2/F3)
Offset Address: 08h
Default Value: See bit description
Attribute:
Size:
RO
8 bits
Bit
Description
7:0
Revision ID — RO. Refer to the Intel® ICH6 Family Datasheet Specification Update for the value of
the Revision ID Register
PI—Programming Interface Register
(PCI Express—D28:F0/F1/F2/F3)
Address Offset: 09h
Default Value: 00h
Attribute:
Size:
RO
8 bits
Bit
Description
Programming Interface — RO.
7:0
00h = No specific register level programming interface defined.
SCC—Sub Class Code Register
(PCI Express—D28:F0/F1/F2/F3)
Address Offset: 0Ah
Default Value: 04h
Attribute:
Size:
RO
8 bits
Bit
Sub Class Code (SCC) — RO.
7:0
04h = PCI-to-PCI bridge.
Description
BCC—Base Class Code Register
(PCI Express—D28:F0/F1/F2/F3)
Address Offset: 0Bh
Default Value: 06h
Attribute:
Size:
RO
8 bits
Bit
Description
Base Class Code (BCC) — RO.
7:0
06h = Indicates the device is a bridge device.
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet
681