R01UH0092EJ0110 Rev.1.10
Page 240 of 807
Jul 31, 2012
M16C/64C Group
16. DMAC
16.2.5
DMAi Source Select Register (DMiSL) (i = 0 to 3)
DSEL4-DSEL0 (DMA request source select bit) (b4-b0)
The DMAi request sources can be selected by a combination of the DMS bit and bits DSEL4 to DSEL0
in the manner shown in Table 16.3 to Table 16.6. These tables list the DMAi request sources.
b7 b6 b5 b4
b1
b2
b3
DMAi Source Select Register (i = 0 to 3)
Symbol
DM0SL
DM1SL
DM2SL
DM3SL
Address
0398h
039Ah
0390h
0392h
Bit Symbol
RW
Reset Value
00h
00h
00h
00h
b0
—
—
(b5)
DMS
RW
Bit Name
Function
DSEL0
DSEL1
DSEL2
DSEL3
DSEL4
DMA request source select
bit
See the bit explanation below.
RW
RW
RW
RW
DMA request source
expansion select bit
0: Basic request source
1: Extended request source
No register bit. If necessary, set to 0. The read value is undefined.
DSR
RW
Software DMA request bit
A DMA request is generated by setting this
bit to 1 when the DMS bit is 0 (basic
source) and bits DSEL4 to DSEL0 are
00001b (software trigger).
The read value is 0.
Содержание M16C Series
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