307013-003 Datasheet, PDF (711/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Intel® High Definition Audio Controller Registers (D27:F0)
19.1.11 HEADTYP—Header Type Register
(Intel^® High Definition Audio Controller—D27:F0)
Address Offset: 0Eh
Default Value: 00h
Attribute:
Size:
RO
8 bits
Bit
Description
7:0 Header Type — RO. Hardwired to 00.
19.1.12 HDBARL—Intel^® High Definition Audio Lower Base Address
Register
(Intel^® High Definition Audio—D27:F0)
Address Offset: 10h-13h
Default Value: 00000004h
Attribute:
Size:
R/W, RO
32 bits
Bit
Description
Lower Base Address (LBA) — R/W. This field contains the base address for the
31:14 Intel^® High Definition Audio controller’s memory mapped configuration registers; 16 KB
are requested by hardwiring bits 13:4 to 0s.
13:4 RO. Hardwired to 0s
3 Prefetchable (PREF) — RO. Hardwired to 0 to indicate that this BAR is NOT prefetchable.
2:1
Address Range (ADDRNG) — RO. Hardwired to 10b, indicating that this BAR can be
located anywhere in 64-bit address space.
0
Space Type (SPTYP) — RO. Hardwired to 0. Indicates this BAR is located in memory
space.
19.1.13 HDBARU—Intel^® High Definition Audio Upper Base Address
Register
(Intel^® High Definition Audio Controller—D27:F0)
Address Offset: 14h-17h
Default Value: 00000000h
Attribute:
Size:
R/W
32 bits
Bit
Description
31:0
Upper Base Address (UBA) — R/W. This field provides the upper 32 bits of the Base
address for the Intel^® High Definition Audio controller’s memory mapped configuration
registers.
Intel ^® ICH7 Family Datasheet
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