EPBAR Registers—Egress Port Register Summary
R
6.1.1
EPESD—EP Element Self Description
MMIO Range:
Address Offset:
Default Value:
Access:
EPBAR
044h
00000201h
R/WO, RO
32 bits
Size:
This register provides information about the root complex element containing this Link
Declaration capability.
Bit
Access
& Default
Description
31:24
RO
00h
Port Number: This field specifies the port number associated with this element with
respect to the component that contains this element. A value of 00h indicates to
configuration software that this is the default egress port.
23:16
15:8
R/WO
00h
Component ID: This field identifies the physical component that contains this Root
Complex Element. Component IDs start at 1.
This value is a mirror of the value in the Component ID field of all elements in this
component. The value only needs to be written in one of the mirrored fields and it
will be reflected everywhere that it is mirrored.
RO
02h
Number of Link Entries: This field indicates the number of link entries following
the Element Self Description. This field reports 2 (one each for PCI Express* x16
interface and DMI).
7:4
3:0
Reserved
RO
1h
Element Type: This field Indicates the type of the Root Complex Element.
1h = Port to system memory
110
Datasheet
INTEL [ INTEL ]
