Vc1Rsts-Vc1 Resource Status (D1:F0); Rcldech-Root Complex Link Declaration Enhanced Capability Header (D1:F0) - Intel 925 - Pentium D 925 3.0GHz 800MHz 4MB-Cache Socket 775 CPU Datasheet

Host-PCI Express* Graphics Bridge Registers (D1:F0)
8.1.54 VC1RSTS—VC1 Resource Status (D1:F0)
PCI Device:
Address Offset:
Default Value:
Access:
Size:
This register reports the Virtual Channel specific status.
Bit
15:2
1
0
8.1.55 RCLDECH—Root Complex Link Declaration Enhanced
Capability Header (D1:F0)
PCI Device:
Address Offset:
Default Value:
Access:
Size:
This capability declares links from this element (PCI Express* x16 Graphics Interface) to other
elements of the root complex component to which it belongs. See the PCI Express specification
for link/topology declaration requirements.
Bit
31:20
19:16
15:0
Note: See corresponding Egress Port Link Declaration Capability registers for diagram of Link
Declaration Topology.
152
Access &
Default
Reserved
RO VC1 Negotiation Pending
1b
0 = The VC negotiation is complete.
1 = The VC resource is still in the process of negotiation (initialization or
disabling).
This bit indicates the status of the process of Flow Control initialization. It is set by
default on Reset, as well as when the corresponding Virtual Channel is Disabled
or the Link is in the DL_Down state. It is cleared when the link successfully exits
the FC_INIT2 state
Before using a Virtual Channel, software must check whether the VC Negotiation
Pending fields for that Virtual Channel are cleared in both Components on a Link.
Reserved
Access &
Default
RO Pointer to Next Capability: This is the last capability in the PCI Express*
extended capabilities list.
000h
RO Link Declaration Capability Version: Hardwired to 1 to indicate compliances
1h with the 1.0a version of the PCI Express specification.
RO Extended Capability ID: Value of 0005h identifies this linked list item (capability
0005h structure) as being for PCI Express Link Declaration Capability.
1
126h
0000h
RO
16 bits
Description
1
140h
00010005h
RO
32 bits
Description
®
Intel 82925X/82925XE MCH Datasheet
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