SH7619_09 Datasheet, PDF (399/860 Pages) Renesas Technology Corp – Renesas 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. 6.00 Jul. 15, 2009 Page 359 of 816
REJ09B0237-0600