M30620FCAFP datasheet(463/615 Pages) RENESAS

463 / 615 page

DMAC

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-146

Figure 2.9.2. DMAC-related registers (1)

DMA1 request cause select register

Symbol

Address

When reset

DM1SL

03BA16

0016

Function

Bit symbol

DMA request cause

select bit

DSEL0

DSEL1

DSEL2

DSEL3

Nothing is assigned.

In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.

Software DMA

request bit

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”)

DSR

b3 b2 b1 b0

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)

/serial I/O3 (DMS=1)

0 1 1 0 : Timer A4 (DMS=0)

/serial I/O4 (DMS=1)

0 1 1 1 : Timer B0 (DMS=0)

/two edges of INT1 (DMS=1)

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

1 1 1 0 : A-D conversion

1 1 1 1 : UART1 receive

Bit name

DMA request cause

expansion select bit

DMS

0 : Normal

1 : Expanded cause

DMA0 request cause select register

Symbol

Address

When reset

DM0SL

03B816

0016

Function

Bit symbol

DMA request cause

select bit

DSEL0

DSEL1

DSEL2

DSEL3

Nothing is assigned.

In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.

Software DMA

request bit

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”)

DSR

b3 b2 b1 b0

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)

/two edges of INT0 pin (DMS=1)

0 1 1 1 : Timer B0 (DMS=0)

Timer B3 (DMS=1)

1 0 0 0 : Timer B1 (DMS=0)

Timer B4 (DMS=1)

1 0 0 1 : Timer B2 (DMS=0)

Timer B5 (DMS=1)

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

Bit name

DMA request cause

expansion select bit

DMS

0 : Normal

1 : Expanded cause

M30620FCAFP Datasheet(PDF) 463 Page - Renesas Technology Corp

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