307013-003 Datasheet, PDF (274/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Chipset Configuration Registers
7.1.24
HDD—Intel^® High Definition Audio Descriptor Register
Offset Address: 0160–0163h
Default Value: 15xx0002h
Attribute:
Size:
R/WO, RO
32-bit
7.1.25
Bit
31:24
23:16
15:2
1
0
Description
Target Port Number (PN) — RO. This field indicates the target port number is 15h
(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
7.1.26
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
RP5D—Root Port 5 Descriptor Register
Offset Address: 0170–0173h
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 (root
port #5).
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.PE5D (offset 3418h, bit 20) is set, the link for this
root port is not valid (return 0). When FD.PE5D is cleared, the link for this root port is
valid (return 1).
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Intel ^® ICH7 Family Datasheet