Specification Sheet

Datasheet, Volume 2 of 2 151
DMIBAR Registers
6.14 DMI Root Complex Link Declaration
(DMIRCLDECH)—Offset 40h
This capability declares links from the respective element to other elements of the root
complex component to which it belongs and to an element in another root complex
component. See PCI Express specification for link/topology declaration requirements.
Access Method
Default: 8010005h
Type: MEM
(Size: 32 bits)
Offset: [B:0, D:0, F:0] + 40h
3
1
2
8
2
4
2
0
1
6
1
2
8 4 0
0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
PNC
LDCV
ECID
Bit
Range
Default &
Access
Field Name (ID): Description
31:20
80h
RO
PNC: Pointer to Next Capability: This field contains the offset to the next PCI Express
capability structure in the linked list of capabilities (Internal Link Control Capability).
19:16
1h
RO
LDCV: Link Declaration Capability Version: Hardwired to 1 to indicate compliances
with the 1.1 version of the PCI Express specification.
Note: This version does not change for 2.0 compliance.
15:0
5h
RO
ECID: Extended Capability ID: Value of 0005h identifies this linked list item (capability
structure) as being for PCI Express Link Declaration Capability.