SH7619 Datasheet, PDF (393/836 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 13 Direct Memory Access Controller (DMAC)
CKIO
Bus cycle
DREQ
DMAC
CPU
Last DMA transfer
DMAC
CPU
CPU
DACK
TEND
Figure 13.17 Example of DMA Transfer End in Cycle Steal Mode Level Detection
When an 8-bit or 16-bit external device is accessed in longword units, or when an 8-bit external
device is accessed in word units, the DACK output is divided because of the data alignment. This
example is illustrated in figure 13.18.
Rev. 5.00 Mar. 15, 2007 Page 355 of 794
REJ09B0237-0500