82801FB Datasheet, PDF (256/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

Chipset Configuration Registers
7.1.20
7.1.21
7.1.22
RP4BA—Root Port 4 Base Address Register
Offset Address: 0158–015Fh
Default Value: 00000000000E3000h
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 #3.
Reserved
HDD—Intel^® High Definition Audio Descriptor Register
Offset Address: 0160–0163h
Default Value: 05xx0002h
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 5h (Intel High
Definition Audio).
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 FD.ZD (offset 3418h, bit 4) is set, the link to Intel High Definition
Audio is not valid (return 0). When FD.ZD is cleared, the link to Intel High Definition Audio is valid
(return 1).
HDBA—Intel^® High Definition Audio Base Address Register
Offset Address: 0168–016Fh
Default Value: 00000000000D8000h
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 #27.
Function Number (FN) — RO. This field indicates the root port is on function #0.
Reserved
256
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet