Toshiba H1 Series Data Book page 95

32bit micro controller tlcs-900/h1 series
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(3) HDMACAn (DMA Transfer Count A Setting Register)
The HDMACAn register is used to set the number of times a DMA transfer is to be
performed by one DMA request. HDMACAn contains 16 bits and can specify up to 65536
transfers (0001H = one transfer, FFFFH = 65535 transfers, 0000H = 65536 transfers). Even
when the transfer count A is updated by DMA execution, HDMACAn is not updated.
HDMACA0 to HDMACA5 have the same configuration.
HDMACAn
bit Symbol
DnCA7
Read/Write
After reset
Function
bit Symbol
DnCA15
Read/Write
After reset
Function
Channel 0
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Note: Read-modify-write instructions can be used on all these registers.
HDMACAn Register
7
6
5
DnCA6
DnCA5
0
0
0
15
14
13
DnCA14
DnCA13
0
0
0
Transfer count A
Transfer count A
[15: 8]
[7: 0]
HDMACA0
(0909H)
(0908H)
HDMACA1
(0919H)
(0918H)
HDMACA2
(0929H)
(0928H)
HDMACA3
(0939H)
(0938H)
HDMACA4
(0949H)
(0948H)
HDMACA5
(0959H)
(0958H)
Figure 3.6.4 HDMACAn Register
92CZ26A-92
4
3
DnCA4
DnCA3
R/W
0
0
Transfer count A [7:0] for DMAn
12
11
DnCA12
DnCA11
R/W
0
0
Transfer count A [15:8] for DMAn
TMP92CZ26A
2
1
0
DnCA2
DnCA1
DnCA0
0
0
0
10
9
8
DnCA10
DnCA9
DnCA8
0
0
0

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