m30262f8gp Renesas Electronics Corporation., m30262f8gp Datasheet - Page 75

• Manufacturer Part Number: m30262f8gp
• Description: Renesas 16-bit Cmos Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

DMAC
Figure 1.11.3. DMAC register (2)
DMAi control register
DMA1 request cause select register
b7
b7
b6
b6
Preliminary Specifications Rev. 0.9
b5
b5
Specifications in this manual are tentative and subject to change.
b4
b4
b3
b3
b2
b2
b1
b1
b0
b0
Note 1: DMA request can be cleared by resetting the bit.
Note 2: This bit can only be set to 0 .
Note 3: Source address direction select bit and destination address direction select bit
Nothing is assigned.
In an attempt to write to these bits, write 0 . The value, if read, turns out to be 0 .
Nothing is assigned.
In an attempt to write to these bits, write 0 . The value, if read, turns out to be 0 .
Bit symbol
Bit symbol
DMBIT
DMASL
DSEL0
DSEL1
DSEL2
DSEL3
DSR
DMAS
DMAE
DSD
DAD
DMS
Symbol
DMiCON(i=0,1)
Symbol
DM1SL
cannot be set to 1 simultaneously.
Renesas Technology Corp.
Transfer unit bit select bit
Destination address
direction select bit (Note 3)
DMA request cause
Software DMA
request bit
Repeat transfer mode
DMA request bit (Note 1)
DMA enable bit
Source address direction
select bit (Note 3)
DMA request cause
expansion select bit
Bit name
Bit name
select bit
002C
select bit
Address
Address
03BA
16
, 003C
16
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 )
b3 b2 b1 b0
0 : Normal
1 : Expanded cause
0 0 0 0 : Falling edge of INT1 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 (DMS=0)
0 1 1 0 : Timer A4 (DMS=0)
0 1 1 1 : Timer B0 (DMS=0)
1 0 0 0 : Timer B1
1 0 0 1 : Timer B2
1 0 1 0 : UART0 transmit
1 0 1 1 : UART0 receive
1 1 0 0 : UART2 transmit
1 1 0 1 : UART2 receive/ACK2
1 1 1 0 : A-D conversion
1 1 1 1 : UART1 receive
16
0 : 16 bits
1 : 8 bits
0 : Single transfer
1 : Repeat transfer
0 : DMA not requested
1 : DMA requested
0 : Disabled
1 : Enabled
0 : Fixed
1 : Forward
0 : Fixed
1 : Forward
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
/two edges of INT1 (DMS=1)
When reset
When reset
00000X00
00
Function
F unction
16
2
M16C/26 Group
R
R
(Note 2)
W
W
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