Datasheet

Host-Primary PCI Express* Bridge Registers (D1:F0)
168 Datasheet
6.27 SS_CAPID—Subsystem ID and Vendor ID
Capabilities
B/D/F/Type: 0/1/0/PCI
Address Offset: 88–8Bh
Default Value: 0000800Dh
Access: RO
Size: 32 bits
This capability is used to uniquely identify the subsystem where the PCI device resides.
Because this device is an integrated part of the system and not an add-in device, it is
anticipated that this capability will never be used. However, it is necessary because
Microsoft will test for its presence.
6.28 SS—Subsystem ID and Subsystem Vendor ID
B/D/F/Type: 0/1/0/PCI
Address Offset: 8C–8Fh
Default Value: 00008086h
Access: RWO
Size: 32 bits
System BIOS can be used as the mechanism for loading the SSID/SVID values. These
values must be preserved through power management transitions and a hardware
reset.
Bit Access
Default
Value
Description
31:16 RO 0000h Reserved
15:8 RO 80h
Pointer to Next Capability (PNC): This field contains a pointer to the next
item in the capabilities list which is the PCI Power Management capability.
7:0 RO 0Dh
Capability ID (CID): Value of 0Dh identifies this linked list item (capability
structure) as being for SSID/SSVID registers in a PCI-to-PCI Bridge.
Bit Access
Default
Value
Description
31:16 RWO 0000h
Subsystem ID (SSID): Identifies the particular subsystem and is assigned by
the vendor.
15:0 RWO 8086h
Subsystem Vendor ID (SSVID): Identifies the manufacturer of the subsystem
and is the same as the vendor ID which is assigned by the PCI Special Interest
Group.