Vcech-Virtual Channel Enhanced Capability Header (D1:F0); Pvccap1-Port Vc Capability Register 1 (D1:F0) - Intel 925 - Pentium D 925 3.0GHz 800MHz 4MB-Cache Socket 775 CPU Datasheet

R
8.1.45 VCECH—Virtual Channel Enhanced Capability Header
(D1:F0)
PCI Device:
Address Offset:
Default Value:
Access:
Size:
This register indicates PCI Express device Virtual Channel capabilities.
Note: Extended capability structures for PCI Express devices are located in PCI Express extended
configuration space and have different field definitions than standard PCI capability structures.
Bit
31:20
19:16
15:0
8.1.46 PVCCAP1—Port VC Capability Register 1 (D1:F0)
PCI Device:
Address Offset:
Default Value:
Access:
Size:
This register describes the configuration of PCI Express Virtual Channels associated with this
port.
Bit
31:7
6:4
3
2:0
®
Intel 82925X/82925XE MCH Datasheet
Access &
Default
RO Pointer to Next Capability: The Link Declaration Capability is the next in the PCI
140h Express* extended capabilities list.
RO PCI Express Virtual Channel Capability Version: Hardwired to 1 to indicate
1h compliances with the 1.0a version of the PCI Express specification.
RO Extended Capability ID: Value of 0002 h identifies this linked list item (capability
0002h structure) as being for PCI Express Virtual Channel registers.
Access &
Default
Reserved
RO Low Priority Extended VC Count: This field indicates the number of (extended)
000b Virtual Channels in addition to the default VC belonging to the low-priority VC
(LPVC) group that has the lowest priority with respect to other VC resources in a
strict-priority VC Arbitration.
The value of 0 in this field implies strict VC arbitration.
Reserved
R/WO Extended VC Count: This field indicates the number of (extended) Virtual
001b Channels in addition to the default VC supported by the device.
Host-PCI Express* Graphics Bridge Registers (D1:F0)
1
100h
14010002h
RO
32 bits
Description
1
104h
00000001h
RO, R/WO
32 bits
Description
147