LM3S2276 Datasheet, PDF (315/785 Pages) Texas Instruments – Stellaris® LM3S2276 Microcontroller

Stellaris® LM3S2276 Microcontroller
Register 4: DMA Status (DMASTAT), offset 0x000
The DMA Status (DMASTAT) register returns the status of the controller. You cannot read this
register when the controller is in the reset state.
DMA Status (DMASTAT)
Base 0x400F.F000
Offset 0x000
Type RO, reset 0x001F.0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
DMACHANS
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
reserved
STATE
reserved
MASTEN
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:21
20:16
15:8
Name
reserved
DMACHANS
reserved
Type
RO
RO
RO
Reset
0x00
0x1F
0x00
Description
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
Available DMA Channels Minus 1
This bit contains a value equal to the number of DMA channels the
controller is configured to use, minus one. That is, 32 DMA channels.
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
November 17, 2011
315
Texas Instruments-Production Data