Renesas M16C/50 Series User Manual page 255

M16C/5L Group, M16C/56 Group
14.2.5 DMAi Source Select Register (DMiSL) (i = 0 to 3)
DMAi Source Select Register (i = 0 to 3)
b7 b6 b5 b4 b3 b2 b1
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 14.3 to Table 14.6. These tables list the DMAi request sources.
R01UH0127EJ0110 Rev.1.10
Sep 01, 2011
b0
Symbol
DM0SL
DM1SL
DM2SL
DM3SL
Bit Symbol Bit Name
DSEL0
DSEL1
DMA request source select
DSEL2
bit
DSEL3
DSEL4
—
No register bit. If necessary, set to 0. The read value is undefined.
(b5)
DMA request source
DMS
expansion select bit
DSR Software DMA request bit
Address
0398h
039Ah
0390h
0392h
Function
See the bit explanation below.
0: Basic request source
1: Extended request source
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.
14. DMAC
Reset Value
00h
00h
00h
00h
RW
RW
RW
RW
RW
—
RW
RW
Page 218 of 803