Figure 14.42 Ddt Mode Setting; Figure 14.43 Single Address Mode/Burst Mode/Edge Detection/External Device - Hitachi SH7751 Hardware Manual

DMA Operation Register (DMAOR)
31
DDT: 0: Normal DMA mode
1: On-demand data transfer mode
CKIO
DBREQ
BAVL
TR
A25–A0
D31–D0
CMD
TDACK
ID1, ID0
Start of data transfer
Figure 14.43 Single Address Mode/Burst Mode/Edge Detection/
Rev. 3.0, 04/02, page 538 of 1064

Figure 14.42 DDT Mode Setting

No DMA request sampling
CA
DTR D0
WT
 
External Device
15
DDT
CA
D1 D2 D3 D0 D1 D2
WT
External Bus Data Transfer
9 8 2
PR[1:0] AE
NMIF
D3 D1 D2 D3
1 0
DME