TC1784
Direct Memory Access Controller (DMA)
User´s Manual
11-90
V1.1, 2011-05
DMA, V3.03
The Channel Status Register contains the current transfer count and a pattern detection
compare result.
DMA_CHSR0x (x = 0-7)
DMA Channel 0x Status Register (080
H
+x*20
H
)
Reset Value: 0000 0000
H
DMA_CHSR1x (x = 0-7)
DMA Channel 1x Status Register (180
H
+x*20
H
)
Reset Value: 0000 0000
H
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
0
r
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
LXO
0
TCOUNT
rh
r
rh
Field
Bits
Type Description
TCOUNT
[9:0]
rh
Transfer Count Status
TCOUNT holds the actual value of the DMA transfer
count for DMA channel mx.
TCOUNT is loaded with the value of CHCRmx.TREL
when TRSR.CHmx becomes set (and TCOUNT = 0).
After each DMA transfer, TCOUNT is decremented
by 1.
LXO
15
rh
Old Value of Pattern Detection
This bit contains the compare result of a pattern
compare operation when 8-bit or 16-bit data width is
selected.
8-bit data width: see
16-bit data width: see
and
0
B
The corresponding pattern compare operation
did not find a pattern match on the last move
1
B
The corresponding pattern compare operation
found a pattern match at the last move
0
[14:10],
[31:16]
r
Reserved
Read as 0; should be written with 0.
Содержание TC1784
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