Renesas M16C/29 Series User Manual

11. DMAC
puorG92/C61M
page 93
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2110-1010B90JER
Figure 11.2 DM0SL Register
DMA0 Request Cause Select Register
Symbol Address After Reset
DM0SL 03B8
16 00 16
Function
Bit Symbol
b7 b6 b5 b4 b3 b2 b1 b0
DMA request cause
select bit
DSEL0
RW
DSEL1
DSEL2
DSEL3
DSR
Bit Name
DMS
RW
RW
RW
RW
RW
RW
(b5-b4)
Refer to note (1)
A DMA request is generated by
setting this bit to 1 when the DMS bit
is 0 (basic cause) and bits DSEL3 to
DSEL0 are 0001
2 (software trigger).
The value of this bit when read is 0
Software DMA request
bit
Nothing is assigned. When write, set to 0.
When read, their content are 0
DMA request cause
expansion select bit
0: Basic cause of request
1: Extended cause of request
NOTE:
1. The causes of DMA0 requests can be selected by a combination of DMS bit and bits DSEL3 to DSEL0 in the
manner described below.
DSEL3 to DSEL0 DMS=0(basic cause of request) DMS=1(extended cause of request)
0 0 0 0
2 Falling edge of INT0 pin IC/OC base timer
0 0 0 1
2
Software trigger –
0 0 1 0
2 Timer A0 IC/OC channel 0
0 0 1 1
2
Timer A1 IC/OC channel 1
0 1 0 0
2 Timer A2 –
0 1 0 1
2 Timer A3 –
0 1 1 0
2 Timer A4 Two edges of INT0 pin
0 1 1 1
2 Timer B0 –
1 0 0 0
2 Timer B1 –
1 0 0 1
2 Timer B2 –
1 0 1 0
2 UART0 transmit IC/OC channel 2
1 0 1 1
2 UART0 receive IC/OC channel 3
1 1 0 0
2 UART2 transmit IC/OC channel 4
1 1 0 1
2 UART2 receive IC/OC channel 5
1 1 1 0
2 A/D conversion IC/OC channel 6
1 1 1 1
2 UART1 transmit IC/OC channel 7

Renesas M16C/29 Series Specifications

General

Brand	Renesas
Model	M16C/29 Series
Category	Microcontrollers
Language	English