M16C6S_09 Datasheet, PDF (70/208 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6S Group
DMAC
DMA0 request cause select register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
DM0SL
Address
03B816
After reset
0016
Bit symbol
Bit name
Function
RW
DSEL0 _{DMA request cause}
Refer to note
RW
select bit
DSEL1
RW
DSEL2
RW
DSEL3
RW
(b5-b4)
Nothing is assigned. When write, set to “0”.
When read, its content is “0”.
DMS
DSR
DMA request cause
expansion select bit
Software DMA
request bit
0: Basic cause of request
1: Extended cause of request
RW
A DMA request is generated by
setting this bit to “1” when the DMS
bit is “0” (basic cause) and the
RW
DSEL3 to DSEL0 bits are “00012”
(software trigger).
The value of this bit when read is “0” .
Note: The causes of DMA0 requests can be selected by a combination of DMS bit and DSEL3 to DSEL0 bits in the
manner described below.
DSEL3 to DSEL0
0 0 0 02
0 0 0 12
0 0 1 02
0 0 1 12
0 1 0 02
0 1 0 12
0 1 1 02
0 1 1 12
1 0 0 02
1 0 0 12
1 0 1 02
1 0 1 12
1 1 0 02
1 1 0 12
1 1 1 02
1 1 1 12
DMS=0(basic cause of request)
Falling edge of INT0 pin
Software trigger
Timer A0
Timer A1
Timer A2
Timer A3
Timer A4
–
–
–
UART0 transmit
UART0 receive
UART2 transmit
UART2 receive
–
UART1 transmit
DMS=1(extended cause of request)
–
–
–
–
–
–
Two edges of INT0 pin
–
–
–
–
–
–
–
–
–
Figure 1.11.2. DM0SL Register
Rev.5.01 Dec 10, 2009 page 70 of 201
REJ03B0014-0501