876784 Intel, 876784 Datasheet - Page 703

• Manufacturer Part Number: 876784
• Manufacturer: Intel

Specifications of 876784

• Lead Free Status / RoHS Status: Compliant

PCI Express* Configuration Registers (Desktop and Mobile Only)
18.1.62
18.1.63
Intel
®
ICH7 Family Datasheet
RCTCL — Root Complex Topology Capability List Register
(PCI Express—D28:F0/F1/F2/F3/F4/F5)
Address Offset: 180
Default Value:
ESD — Element Self Description Register
(PCI Express—D28:F0/F1/F2/F3/F4/F5)
Address Offset: 184h
Default Value:
31:20
19:16
31:24
23:16
15:0
15:8
7:4
3:0
Bit
Bit
Next Capability (NEXT) — RO. This field indicates the next item in the list, in this
case, end of list.
Capability Version (CV) — RO. This field indicates the version of the capability
structure.
Capability ID (CID) — RO. This field indicates this is a root complex topology
capability.
Port Number (PN) — RO. This field indicates the ingress port number for the root
port. There is a different value per port:
Component ID (CID) — RO. This field returns the value of the ESD.CID field (Chipset
Configuration Space: Offset 0104h:bits 23:16) of the chip configuration section, that is
programmed by platform BIOS, since the root port is in the same component as the
RCRB.
Number of Link Entries (NLE) — RO. (Default value is 01h). This field indicates one
link entry (corresponding to the RCRB).
Reserved.
Element Type (ET) — RO. (Default value is 0h). This field indicates that the element
type is a root port.
Port #
1
2
3
4
5
6
00010005h
See Description
Value
–
01h
02h
03h
04h
05h
06h
183h
–
187h
Description
Description
Attribute:
Size:
Attribute:
Size:
RO
32 bits
RO
32 bits
703