M32C80 Datasheet, PDF(134/352 Page) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

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M32C80 Datasheet, PDF (134/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

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M32C/80 Group

12. DMAC

DMAi Memory Address Register (i=0 to 3)

b23

b16 b15

b8 b7

b0 Symbol

DMA0(2)

DMA1(2)

DMA2(bank1;A0)(3)

DMA3(bank1;A1)(4)

Address

(CPU Internal Register)

(CPU Internal Register)

(CPU Internal Register)

(CPU Internal Register)

After Reset

XXXXXX16

XXXXXX16

00000016

00000016

Function

Setting Range RW

Set a source memory address or destination

memory address(1)

00000016 to FFFFFF16

RW

(16-Mbyte space)

NOTES:

1. When the RWk bit (k=0 to 3) in the DMDj register (j=0, 1)is set to "0" (fixed address to memory), a

destination address is selected. When the RWk bit is set to "1" (memory to fixed address), a source

address is selected.

2. Use the LDC instruction to set the DMA0 and DMA1 registers.

3. To set the DMA2 register, set the B flag in the FLG register to "1" (register bank 1) and set the A0

register. Use the MOV instruction to set the A0 register.

4. To set the DMA3 register, set the B flag to "1" and set the A1 register. Use the MOV instruction to set

the A1 register.

DMAi SFR Address Register (i=0 to 3)

b23

b16 b15

b8 b7

b0 Symbol

DSA0(2)

DSA1(2)

DSA2(bank1;SB)(3)

DSA3(bank1;FB)(4)

Address

(CPU Internal Register)

(CPU Internal Register)

(CPU Internal Register)

(CPU Internal Register)

After Reset

XXXXXX16

XXXXXX16

00000016

00000016

Function

Setting Range RW

Set a source fixed address or destination fixed

address(1)

00000016 to FFFFFF16 RW

(16-Mbyte space)

NOTES:

1. When the RWk bit (k=0 to 3) in the DMDj register (j=0, 1)is set to "0" (fixed address to memory), a

source address is selected. When the RWk bit is set to "1" (memory to fixed address), a destination

address is selected.

2. Use the LDC instruction to set the DSA0 and DSA1 registers.

3. To set the DSA2 register, set the B flag in the FLG register to "1" (register bank 1) and the set the SB

register. Use the LDC instruction to set the SB register.

4. To set the DSA3 register, set the B flag to "1" and set the FB register. Use the LDC instruction to set

the PB register.

DMAi Memory Address Reload Register(1) (i=0 to 3)

b23

b16 b15

b8 b7

b0 Symbol

DRA0

DRA1

DRA2(SVP)(2)

DRA3(VCT)(3)

Address

(CPU Internal Register)

(CPU Internal Register)

(CPU Internal Register)

(CPU Internal Register)

After Reset

XXXXXX16

XXXXXX16

XXXXXX16

XXXXXX16

Function

Set a source memory address or destination

memory address(1)

NOTES:

1. Use the LDC instruction to set the DRA0 and DRA1 registers.

2. To set the DRA2 register, set the SVP register.

3. To set the DRA3 register, set the VCT register.

Setting Range RW

00000016 to FFFFFF16 RW

(16-Mbyte space)

Figure 12.5 DMA0 to DMA3 Registers, DSA0 to DSA3 Registers and DRA0 to DRA3 Registers

Rev. 1.00 Nov. 01, 2005 Page 115 of 330

REJ09B0271-0100

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