M30622 Mitsubishi, M30622 Datasheet - Page 74

• Manufacturer Part Number: M30622
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

DMAC
Figure 1.16.2. DMAC register (1)
DMA0 request cause select register
b7
b6
b5
b4
b3
b2
b1
b0
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.
Bit symbol
DSEL0
DSEL1
DSEL2
DSEL3
DMS
DSR
Symbol
DM0SL
DMA request cause
expansion bit
DMA request cause
Software DMA
request bit
Bit name
select bit
74
Address
03B8
16
0 : Normal
1 : Expanded cause
b3 b2 b1 b0
If software trigger is selected, a
DMA request is generated by
setting this bit to “1” (When read,
the value of this bit is always “0”)
0 0 0 0 : Falling edge of INT0 pin
0 0 0 1 : Software trigger
0 0 1 0 : Timer A0
0 0 1 1 : Timer A1
0 1 0 0 : Timer A2
0 1 0 1 : Timer A3
0 1 1 0 : Timer A4 (DMS=0)
0 1 1 1 : Timer B0 (DMS=0)
1 0 0 0 : Timer B1 (DMS=0)
1 0 0 1 : Timer B2 (DMS=0)
1 0 1 0 : UART0 transmit
1 0 1 1 : UART0 receive
1 1 0 0 : UART2 transmit
1 1 0 1 : UART2 receive
1 1 1 0 : A-D conversion
1 1 1 1 : UART1 transmit
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
/two edges of INT0 pin (DMS=1)
Timer B3 (DMS=1)
Timer B4 (DMS=1)
Timer B5 (DMS=1)
When reset
00
Function
16
Mitsubishi microcomputers
M16C / 62T Group
R
W