AMD SB600 Technical Reference Manual page 223

Output DMA 1/2/3 Threshold – RW - 32 bits - [MEM_Reg: 34h]
Field Name
out DMA #1 State
out DMA #2 State
out DMA #3 State
Reserved
Output Threshold 1
Output Threshold 2
Output Threshold 3
Reserved
Output DMA1/2/3 Threshold Register: Configure Slot responsibility for Output channels 0 and also threshold values
of all out DMA FIFO's.
Output DMA1 Link List Pointer – RW - 32 bits - [MEM_Reg: 38h]
Field Name
out DMA1 LL ptr en.
out DMA1 LL ptr
Output DMA1 Link List Pointer Register:
Output DMA2 Link List Pointer – RW - 32 bits - [MEM_Reg: 3Ch]
Field Name
out DMA2 LL ptr en.
out DMA2 LL ptr
Output DMA2 Link List Pointer Register:
Output DMA3 Link List Pointer – RW - 32 bits - [MEM_Reg: 40h]
Field Name
out DMA3 LL ptr en.
out DMA3 LL ptr
Output DMA3 Link List Pointer Register:
Field Name
out DMA1 DT start
Output DMA1 Discrete Table (DT) Start Pointer Register:
Field Name
out DMA1 DT next
Output DMA1 DT Next Pointer Register:
Output DMA1 DT Current– R - 32 bits - [MEM_Reg: 4Ch]
Field Name
out DMA1 DT current
Output DMA1 DT Current Pointer Register:
©2008 Advanced Micro Devices, Inc.
AMD SB600 Register Reference Manual
Bits Default
2:0 0h
5:3 0h
8:6 0h
15:9 00h
20:16 00h
25:21 00h
30:26 00h
31 0b
Bits Default
0 0b
31:1 0000_0000h
Bits Default
0 0b
31:1 0000_0000h
Bits Default
0 0b
31:1 0000_0000h
Output DMA1 DT Start – R - 32 bits - [MEM_Reg: 44h]
Bits Default
31:0 0000_0000h
Output DMA1 DT Next– R - 32 bits - [MEM_Reg: 48h]
Bits Default
31:0 0000_0000h
Bits Default
31:0 0000_0000h
Description
Current state of out DMA # 1 (Modem 1 for slot 5)
[Read-only]
Current state of out DMA # 2 (Modem 2 for slot 10)
[Read-only]
Current state of out DMA # 3 (Handset for slot 11)
[Read-only]
Threshold value for the Out DMA 1 FIFO. (FIFO size
4x20)
Threshold value for the Out DMA 2 FIFO. (FIFO size
4x20)
Threshold value for the Out DMA 3 FIFO. (FIFO size
4x20)
Description
Output DMA1 Link List Pointer enable
Pointer to the start of the Link List - to the first DT.
Description
Output DMA2 Link List Pointer enable
Pointer to the start of the Link List - to the first DT.
Description
Output DMA3 Link List Pointer enable
Pointer to the start of the Link List - to the first DT.
Description
Pointer to the start of data associated with current DT
for the Output DMA1.
Description
Pointer to the next DT for the Output DMA1
Description
Pointer to the currently accessing memory address for
the Output DMA1.
AC '97 Controller Functional Descriptions
Proprietary Page 223