cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 413

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

Revision 0.8
DMA Register Descriptions
5.13.2.16 Master DMA Channel [7:4] Mode (DMA_CH7:4_MODE)
I/O Address
Type
Reset Value
5.13.2.17 Master DMA Channel [7:4] Clear Byte Pointer (DMA_CH7:4_CLR_PNTR)
I/O Address
Type
Reset Value
Bit
7:6
3:2
1:0
Bit
7:0
5
5
7
7
TRANS_MODE
Name
TRANS_MODE
ADDR_DIR
AUTO_INIT
TRANS_TYPE
DMA_CH_SEL
Name
CLR_PNTR
0D6h
WO
xxh
0D8h
WO
xxh
6
6
ADDR_DIR
Description
Data Transfer Mode.
00: Demand.
01: Single.
Address Direction. 0: Increment; 1: Decrement.
Auto-Initialization Enable. 0: Disabled; 1: Enabled.
Transfer Type.
00: Verify.
01: Memory write.
DMA Channel Select.
00: Channel 4.
01: Channel 5.
Description
Clear Pointer. A write with any data (dummy value) resets high/low byte pointer for
Channels [7:4] memory address and terminal count registers.
DMA_CH7:4_CLR_PNTR Bit Descriptions
5
5
DMA_CH7:4_CLR_PNTR Register Map
DMA_CH7:4_MODE Bit Descriptions
(Continued)
DMA_CH7:4_MODE Register Map
AUTO_INIT
CLR_PNTR (DUMMY_VAL)
4
4
413
3
3
TRANS_TYPE
10: Block.
11: Cascade.
10: Memory read.
11: Reserved
10: Channel 6.
11: Channel 7.
2
2
1
1
DMA_CH_SEL
www.national.com
0
0