AMD SB600 Technical Reference Manual page 208

Field Name
in DMA DT current
Input DMA DT Current Pointer Register:
Input DMA DT Size & FIFO Info- R - 32 bits - [MEM_Reg: 30h]
Field Name
in DMA DT size
in FIFO Used
in FIFO Free
in DMA state
Reserved
Input DMA DT Size & FIFO info Register: Size of data associated with DT for input channels and number of FIFO
entries free and used for the input channels.
Output DMA Slot Enable & Threshold- RW - 32 bits - [MEM_Reg: 34h]
Field Name
out DMA Slot enable
Reserved
Out DMA Threshold
Reserved
Output DMA Slot Enable & Threshold Register: Configure Slot responsibility for Output channels 0 and also
threshold values of out DMA FIFO's.
Output DMA Link List Pointer- RW - 32 bits - [MEM_Reg: 38h]
Field Name
out DMA Link List
Pointer En
out DMA Link List
Pointer
Output DMA Link List Pointer Register:
Field Name
out DMA DT start
Output DMA Discrete Table (DT) Start Pointer Register:
Field Name
out DMA DT next
Output DMA DT Next Pointer Register:
Field Name
out DMA DT current
Output DMA DT Current Pointer Register:
©2008 Advanced Micro Devices, Inc.
AMD SB600 Register Reference Manual
Input DMA DT Current- R - 32 bits - [MEM_Reg: 2Ch]
Bits Default
31:0 0000_0 Pointer to the currently accessing memory address for the input
000h DMA.
Bits Default
15:0 0000h Data size of DT for input DMA.
20:16 00h Number of filled FIFO entries of input DMA.
25:21 1eh Number of free FIFO entries of input DMA.
28:26 0h Current state of in DMA
31:29 0h
Bits Default
9:0 000h Slot enable for audio output.
[0] = 1 Enable slot 3
[1] = 1 Enable slot 4
|
[9] = 1 Enable slot 12
10 0b
17:11 00h Threshold value for the Out DMA FIFO. (FIFO size 90x20)
31:18 0000h
Bits Default
0 0b Output DMA Link List Pointer enable
31:1 0000_0 Pointer to the start of the Link List - to the first DT.
000h
Output DMA DT Start- R - 32 bits - [MEM_Reg: 3Ch]
Bits Default
31:0 0000_0 Pointer to the start of data associated with current DT for the Output
000h DMA.
Output DMA DT Next- R - 32 bits - [MEM_Reg: 40h]
Bits Default
31:0 0000_0 Pointer to the next DT for the Output DMA
000h
Output DMA DT Current- R - 32 bits - [MEM_Reg: 44h]
Bits Default
31:0 0000_0 Pointer to the currently accessing memory address for the Output
000h DMA.
Description
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Description
Description
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Description
AC '97 Controller Functional Descriptions
Proprietary Page 208