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Section 7 Data Transfer Controller (DTC)
7.2.1
DTC Mode Register A (MRA)
MRA selects the DTC operating mode.
Bit
Bit Name
7
SM1
6
SM0
5
DM1
4
DM0
3
MD1
2
MD0
1
DTS
0
Sz
Note:
Don't care
*
Rev. 1.00 Mar. 12, 2008 Page 162 of 1178
REJ09B0403-0100
Initial
Value
R/W
Undefined
—
Undefined
—
Undefined
—
Undefined
—
Undefined
—
Description
Source Address Mode 1 and 0
These bits specify an SAR operation after a data
transfer.
0*: SAR is fixed
10: SAR is incremented after a transfer
(by +1 when Sz = 0, by +2 when Sz = 1)
11: SAR is decremented after a transfer
(by –1 when Sz = 0, by –2 when Sz = 1)
Destination Address Mode 1 and 0
These bits specify a DAR operation after a data
transfer.
0*: DAR is fixed
10: DAR is incremented after a transfer
(by +1 when Sz = 0, by +2 when Sz = 1)
11: DAR is decremented after a transfer
(by –1 when Sz = 0, by –2 when Sz = 1)
DTC Mode
These bits specify the DTC transfer mode.
00: Normal mode
01: Repeat mode
10: Block transfer mode
11: Setting prohibited
DTC Transfer Mode Select
Specifies whether the source side or the destination
side is set to be a repeat area or block area in repeat
mode or block transfer mode.
0: Destination side is repeat area or block area
1: Source side is repeat area or block area
DTC Data Transfer Size
Specifies the size of data to be transferred.
0: Byte-size transfer
1: Word-size transfer
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