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©2008 Advanced Micro Devices, Inc.
HD Audio Controllers Registers
AMD SB600 Register Reference Manual Proprietary Page 237
Input Stream Payload Capability – R – 16 bits - [Mem_Reg: Base + 1Ah]
Field Name Bits Default Description
Input Stream Payload
Capability
15:0 0000h This field indicates the maximum number of words per
frame for any single input stream. This measurement is in
16-bit word quantities per 48 kHz frame. The value must
not be greater than the Input Payload Capability register
value. Software must ensure that a format which would
cause more words per frame than indicated is not
programmed into the Input Stream Descriptor register.
00h: No Limit ( Stream size is limited only by Input Payload
Capability register)
01h: 1 word payload
:
:
FFh: 255 word payload
Interrupt Control – RW – 32 bits - [Mem_Reg: Base + 20h]
Field Name Bits Default Description
Stream Interrupt Enable 7:0 00h When set to “1”, the individual streams are enabled to
generate an interrupt when the corresponding stream
status bits are set.
A stream interrupt is caused as a result of a buffer with IOC
in the BDL entry being completed or as result of FIFO
error. Control over the generation of each of these sources
is in the associated Stream Descriptor.
Bit[0]: Input Stream 0
Bit[1]: Input Stream 1
Bit[2]: Input Stream 2
Bit[3]: Input Stream 3
Bit[4]: Output Stream 0
Bit[5]: Output Stream 1
Bit[6]: Output Stream 2
Bit[7]: Output Stream 3
Reserved 29:8 000000h Reserved
Controller Interrupt Enable 30 0b Enables the general interrupt for controller functions. When
set to “1’, the controller generates an interrupt when the
corresponding status bit gets set due to a Response
Interrupt, a Response Buffer Overrun, and Wake events.
Global Interrupt Enable 31 0b Enables device interrupt generation. When set to “1”, the
HD Audio device is enabled to generate an interrupt. This
control is in addition to any bits in the bus specific address
space such as the Interrupt Enable bit in the PCI
Configuration Space.