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CS5535 Datasheet(PDF) 407 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # CS5535
Description  Geode??CS5535 I/O Companion Multi-Function South Bridge
PDF  555 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

CS5535 Datasheet(HTML) 407 Page - National Semiconductor (TI)

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407
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DMA Register Descriptions (Continued)
Slave DMA Channel [3:0] Command (DMA_CH3:0_CMD)
5.13.2.4
Slave DMA Channel [3:0] Software Request (DMA_CH3:0_SFT_REQ)
5.13.2.5
Slave DMA Channel [3:0] Channel Mask (DMA_CH3:0_CHMSK)
I/O Address
008h
Type
W
Reset Value
xxh
DMA_CH3:0_CMD Register Map
76543
210
DACK_SENSE DREQ_SENSE
WR_TIMING
PR_MODE
TM_MODE
DMA_DIS
RSVD
DMA_CH3:0_CMD Bit Descriptions
Bit
Name
Description
7
DACK_SENSE
DACK Sense. 0: Active low; 1: Active high.
6
DREQ_SENSE
DREQ Sense. 0: Active high; 1: Active low.
5
WR_TIMING
Write Timing. 0: Late write; 1: Extended write.
4
PR_MODE
Priority Mode. 0: Fixed priority; 1: Rotating priority.
3
TM_MODE
Timing Mode. 0: Normal timing; 1: Compressed timing.
2DMA_DIS
DMA Disable. 0: DMA enable for Channels [3:0]; 1: DMA disable for Channels [3:0].
1:0
RSVD
Reserved. Bit 0 must be written with value 0; bit 1 value is don’t care.
I/O Address
009h
Type
WO
Reset Value
xxh
DMA_CH3:0_SFT_REQ Register Map
76543
210
RSVD
DMA_RQ
DMA_CH_SEL
DMA_CH3:0_SFT_REQ Bit Descriptions
Bit
Name
Description
7:3
RSVD
Reserved. Write value is don’t care.
2DMA_RQ
DMA Request. Set to 1 to enable DMA request.
1:0
DMA_CH_SEL
DMA Channel Select.
00: Channel 0.
10: Channel 2.
01: Channel 1.
11: Channel 3.
I/O Address
00Ah
Type
WO
Reset Value
xxh
DMA_CH3:0_CHMSK Register Map
76543
210
RSVD
CH_MASK
DMA_CH_SEL



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