82801FB Datasheet, PDF (254/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

Chipset Configuration Registers
7.1.14
7.1.15
7.1.16
RP1BA—Root Port 1 Base Address Register
Offset Address: 0128–012Fh
Default Value: 00000000000E0000h
Attribute:
Size:
RO
64-bit
Bit
63:32
31:28
27:20
19:15
14:12
11:0
Description
Reserved
Reserved
Bus Number (BN) — RO. This field indicates the root port is on bus #0.
Device Number (DN) — RO. This field indicates the root port is on device #28.
Function Number (FN) — RO. This field indicates the root port is on function #0.
Reserved
RP2D—Root Port 2 Descriptor Register
Offset Address: 0130–0133h
Default Value: 02xx0002h
Attribute:
Size:
R/WO, RO
32-bit
Bit
31:24
23:16
15:2
1
0
Description
Target Port Number (PN) — RO. This field indicates the target port number is 2h (root port #2).
Target Component ID (TCID) — R/WO. This field returns the value of the ESD.CID (offset
0104h, bits 23:16) field programmed by platform BIOS, since the root port is in the same
component as the RCRB.
Reserved
Link Type (LT) — RO. This bit indicates that the link points to a root port.
Link Valid (LV) — RO. When RPC.PC (offset 0224h, bits 1:0) is ‘01’, ‘10’, or ‘11’, or FD.PE2D
(offset 3418h, bit 17) is set, the link for this root port is not valid (return 0). When RPC.PC is ‘00’
and FD.PE2D is cleared, the link for this root port is valid (return 1).
RP2BA—Root Port 2 Base Address Register
Offset Address: 0138–013Fh
Default Value: 00000000000E1000h
Attribute:
Size:
RO
64-bit
Bit
63:32
31:28
27:20
19:15
14:12
11:0
Description
Reserved
Reserved
Bus Number (BN) — RO. This field indicates the root port is on bus #0.
Device Number (DN) — RO. This field indicates the root port is on device #28.
Function Number (FN) — RO. This field indicates the root port is on function #1.
Reserved
254
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet