Datasheet 689
Integrated Intel
®
High Definition Audio Controller Registers
17.1.1.11 HEADTYP—Header Type Register
(Intel
®
High Definition Audio Controller—D27:F0)
Address Offset: 0Eh Attribute: RO
Default Value: 00h Size: 8 bits
17.1.1.12 HDBARL—Intel
®
High Definition Audio Lower Base Address Register
(Intel
®
High Definition Audio—D27:F0)
Address Offset: 10h–13h Attribute: R/W, RO
Default Value: 00000004h Size: 32 bits
17.1.1.13 HDBARU—Intel
®
High Definition Audio Upper Base Address Register
(Intel
®
High Definition Audio Controller—D27:F0)
Address Offset: 14h–17h Attribute: R/W
Default Value: 00000000h Size: 32 bits
Bit Description
7:0 Header Type — RO. Hardwired to 00.
Bit Description
31:14
Lower Base Address (LBA) — R/W. Base address for the Intel
®
High Definition Audio
controller’s memory mapped configuration registers. 16 Kbytes are requested by
hardwiring bits 13:4 to 0s.
13:4 Reserved.
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.
Bit Description
31:0
Upper Base Address (UBA) — R/W. Upper 32 bits of the Base address for the Intel
®
High Definition Audio controller’s memory mapped configuration registers.
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