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©2008 Advanced Micro Devices, Inc.
HD Audio Controllers Registers
AMD SB600 Register Reference Manual Proprietary Page 229
Latency Timer – R – 8 bits – [PCI_Reg: 0Dh]
Field Name Bits Default Description
Latency Timer 7:0 00h Hardwired to “0”.
Header Type – R – 8 bits – [PCI_Reg: 0Eh]
Field Name Bits Default Description
Header Type 7:0 00h Hardwired to “0”.
BIST – R – 8 bits – [PCI_Reg: 0Fh]
Field Name Bits Default Description
BIST
15:0 0000h Hardwired to “0”
.
Lower Base Address Register – RW – 32 bits – [PCI_Reg: 10h]
Field Name Bits Default Description
Space Type 0 0b Hardwired to “0” to indicate this BAR is located in memory
space only.
Address Range 2:1 10b Hardwired to 10b to indicate this BAR can be located
anywhere in 64-bit address space.
Prefetchable 3 0b Hardwired to “0” to indicate this BAR is not prefetchable.
Reserved 13:4 000h Hardwired to “0”.
Lower Base Address 31:14 00000h Lower Base Address for the HD Audio controller’s memory
mapped configuration registers. 16K bytes are requested
by hardwiring bits[13:4] to 0.
Upper Base Address Register – RW – 32 bits – [PCI_Reg: 14h]
Field Name Bits Default Description
Upper Base Address 31:0 00000000
h
Upper Base Address for the HD Audio controller’s memory
mapped configuration registers.
Subsystem Vendor ID – RW – 16 bits – [PCI_Reg: 2Ch]
Field Name Bits Default Description
Subsystem Vendor ID 15:0 0000h This register is implemented as write-once register. Any
subsequent writes have no effect.
Subsystem ID – RW – 16 bits – [PCI_Reg: 2Dh]
Field Name Bits Default Description
Subsystem ID 15:0 0000h This register is implemented as write-once register. Any
subsequent writes have no effect.
Capabilities Pointer – R – 8 bits – [PCI_Reg: 34h]
Field Name Bits Default Description
Capabilities Pointer 7:0 50h This register indicates the offset for the capability pointer