M30240ECFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30240ECFP Datasheet - Page 64

• Manufacturer Part Number: M30240ECFP
• Description: M30240 Group Specification
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Specifications in this manual are tentative and subject to change
DMAC
Figure 1.53: Block diagram of DMAC
Figure 1.54: DMAC register (1)
DMAi request cause select register
b7
b6
Note: Pointer is incremented by a DMA request.
b5
b4
DMA0 transfer counter reload register TCR0 (16)
DMA0 transfer counter TCR0 (16)
DMA1 transfer counter reload register TCR1 (16)
DMA1 transfer counter TCR1 (16)
b3
b2
b1
b0
Note 1: Address 03B8
Note 2: Address 03B8
Note 3: Address 03B8
Nothing is assigned.
These bits can neither be set nor reset. When read, the value of these bits is “0”.
Bit symbol
DSEL0
DSEL1
DSEL2
DSEL3
DSR
(addresses 0029
(addresses 0039
Symbol
DMiSL (i=0,1)
Data bus high-order bits
Data bus low-order bits
DMA request cause
Software DMA
request bit
16
16
, 0028
, 0038
16
16
16
1-64
Bit name
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
is for INT0, 03BA
is for UART1 transmit, 03BA
is for USB0, 03BA
16
16
select bit
)
)
Address bus
03B8
Address
16,
03BA
DMA0 source pointer SAR0(20)
DMA0 destination pointer DAR0 (20)
DMA0 forward address pointer (20)
DMA1 source pointer SAR1 (20)
DMA1 destination pointer DAR1 (20)
DMA1 forward address pointer (20)
DMA latch high-order bits
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 / 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
0 1 1 0 : Timer A4
0 1 1 1 : Timer B0
1 0 0 0 : Timer B1
1 0 0 1 : USB0/USB1 (Note 3)
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 / UART1 receive
16
16
16
is for INT1.
is for USB1.
(Note1)
(Note 2)
When reset
16
(addresses 0022
(addresses 0032
00
Function
is for UART1 receive.
16
DMA latch low-order bits
(addresses 0026
(addresses 0036
Mitsubishi microcomputers
16
16
M30240 Group
to 0020
to 0030
16
16
16
16
to 0024
to 0034
)
)
R
16
16
W
)
)