M32C83T datasheet(143/527 Pages) RENESAS

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Page 120

12. DMAC

)

(

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

Function

DMAi Memory Address Register (i=0 to 3)

Setting Range

Symbol

Address

After Reset

DMA0(2)

(CPU Internal Register)

XXXXXX16

DMA1(2)

(CPU Internal Register)

XXXXXX16

DMA2(bank1;A0)(3)

(CPU Internal Register)

00000016

DMA3(bank1;A1)(4)

(CPU Internal Register)

00000016

00000016 to FFFFFF16

(16-Mbyte space)

Set a source memory address or destination

memory address(1)

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 A0

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

1 register.

b23

b16

b8 b7

b15

Function

DMAi SFR Address Register (i=0 to 3)

Setting Range

Symbol

Address

After Reset

DSA0(2)

(CPU Internal Register)

XXXXXX16

DSA1(2)

(CPU Internal Register)

XXXXXX16

DSA2(bank1;SB)(3)

(CPU Internal Register)

00000016

DSA3(bank1;FB)(4)

(CPU Internal Register)

00000016

00000016 to FFFFFF16

(16-Mbyte space)

Set a source fixed address or destination fixed

address(1)

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

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

the FB register.

b23

b16

b8 b7

b15

Function

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

Setting Range

Symbol

Address

After Reset

DRA0

(CPU Internal Register)

XXXXXX16

DRA1

(CPU Internal Register)

XXXXXX16

DRA2(SVP)(2)

(CPU Internal Register)

XXXXXX16

DRA3(VCT)(3)

(CPU Internal Register)

XXXXXX16

00000016 to FFFFFF16

(16-Mbyte space)

Set a source memory address or destination

memory address

NOTES:

1. Use the LDC instruction to set the these registers.

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

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

b23

b16

b8 b7

b15

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