M32CSLASH8B datasheet(141/406 Pages) RENESAS

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M32C/8B Group

13. DMAC

Preliminary specification

Specifications in this manual are tentative and subject to change.

REJ09B0450-0050 Rev.0.50 Oct 31, 2008

Page 124 of 385

Figure 13.3

DMA0 to DMA3 Registers, DSA0 to DSA3 Registers

b23

Symbol

DMA0(2)

DMA1(2)

DMA2 (bank1:A0)(3)

DMA3 (bank1:A1)(4)

Address

(CPU internal register)

After Reset

XXXXXXh

000000h

Function

DMAi Memory Address Register (i = 0 to 3)

Set an incremented source address or incremented destination

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 incremented address), a destination

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

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

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

4. To set the DMA3 register, set the B flag to 1 and write to the A1 register.

Setting Range

000000h to FFFFFFh

(16 Mbytes)

b16 b15

b8 b7

b23

Symbol

DSA0(2)

DSA1(2)

DSA2 (bank1:SB)(3)

DSA3 (bank1:FB)(4)

Address

(CPU internal register)

After Reset

XXXXXXh

000000h

Function

DMAi SFR Address Register (i = 0 to 3)

Set a fixed source address or fixed destination 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 incremented address), a source address

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

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

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

instruction.

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

Setting Range

000000h to FFFFFFh

(16 Mbytes)

b16 b15

b8 b7

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