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©2008 Advanced Micro Devices, Inc.
AC ’97 Controller Functional Descriptions
AMD SB600 Register Reference Manual Proprietary Page 224
Output DMA2 DT Start– R - 32 bits - [MEM_Reg: 50h]
Field Name Bits Default Description
out DMA2 DT start 31:0 0000_0000h Pointer to the start of data associated with current DT
for the Output DMA2.
Output DMA2 Discrete Table (DT) Start Pointer Register:
Output DMA2 DT Next– R - 32 bits - [MEM_Reg: 54h]
Field Name Bits Default Description
out DMA2 DT next 31:0 0000_0000h Pointer to the next DT for the Output DMA2
Output DMA2 DT Next Pointer Register:
Output DMA2 DT Current– R - 32 bits - [MEM_Reg: 58h]
Field Name Bits Default Description
out DMA2 DT current 31:0 0000_0000h Pointer to the currently accessing memory address for
the Output DMA2.
Output DMA2 DT Current Pointer Register:
Output DMA3 DT Start– R - 32 bits - [MEM_Reg: 5Ch]
Field Name Bits Default Description
out DMA3 DT start 31:0 0000_0000h Pointer to the start of data associated with current DT
for the Output DMA3.
Output DMA3 Discrete Table (DT) Start Pointer Register:
Output DMA3 DT Next– R - 32 bits - [MEM_Reg: 60h]
Field Name Bits Default Description
out DMA3 DT next 31:0 0000_0000h Pointer to the next DT for the Output DMA3
Output DMA3 DT Next Pointer Register:
Output DMA3 DT Current– R - 32 bits - [MEM_Reg: 64h]
Field Name Bits Default Description
out DMA3 DT current 31:0 0000_0000h Pointer to the currently accessing memory address for
the Output DMA3.
Output DMA3 DT Current Pointer Register:
Output DMA 1/2 DT Size– R - 32 bits - [MEM_Reg: 68h]
Field Name Bits Default Description
out DMA 1 DT size 15:0 0000h Data size of DT for Output DMA # 1.
out DMA 2 DT size 31:16 0000h Data size of DT for Output DMA # 2.
Output DMA 1/2 DT Size Register:
Output DMA 3 DT Size– R - 32 bits - [MEM_Reg: 6Ch]
Field Name Bits Default Description
out DMA 1 DT size 15:0 0000h Data size of DT for Output DMA # 1.
Reserved 31:16 0000h
Output DMA 3 DT Size Register:
Output DMA 1/2/3 FIFO Info– R - 32 bits - [MEM_Reg: 70h]
Field Name Bits Default Description
out DMA1 Used 4:0 00h Number of filled FIFO entries of Output DMA1 (FIFO
size 6).
out DMA2 Used 9:5 00h Number of filled FIFO entries of Output DAM2 (FIFO
size 6).