CHAPTER 12 DMA FUNCTIONS
User’s Manual U13850EJ4V0UM
363
(b) V850/SB1 (
µµµµ
PD703033A, 703033AY, 70F3033A, 70F3033AY)
V850/SB2 (
µµµµ
PD703035A, 703035AY, 70F3035A, 70F3035AY)
Set the DRAn register to a value in the range of 000H to 2FFFH or 3000H to 3FFFH (n = 0 to 5).
Figure 12-4. Correspondence Between DRAn Setting Value and Internal RAM (16 KB)
xxFFFFFFH
xxFFB000H
xxFFAFFFH
xxFFF000H
xxFFEFFFH
xxFF8000H
xxFF7FFFH
Access-prohibited
area
Expansion ROM area
Internal peripheral
I/O area
Internal RAM area
(DRAn setting value)
(2FFFH)
(3000H)
(3FFFH)
xxFFC000H
xxFFBFFFH
(0000H)
16 KB (usable for DMA)
Caution Do not set odd addresses for 16-bit transfer (DCHCn register DSn =1).
Remark
The DRAn register setting values is are in the parentheses.
Содержание MPD703030A
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