SH7619_09 Datasheet, PDF (405/860 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 13 Direct Memory Access Controller (DMAC)
13.5.3 Other Notes
1. Before making a transition to standby mode, either wait until DMA transfer finishes or
suspend DMA transfer.
2. If an on-chip peripheral module whose clock supply is to be stopped by the module standby
function is performing DMA transfer, either wait until DMA transfer finishes or suspend DMA
transfer before making a transition to module standby mode.
3. Do not write to SAR, DAR, DMATCR, or DMARS during DMA transfer.
Concerning Above Notes 1 and 2:
DMA transfer end can be confirmed by checking whether the TE bit in CHCR is set to 1.
To suspend DMA transfer, clear the DE bit in CHCR to 0.
Rev. 6.00 Jul. 15, 2009 Page 365 of 816
REJ09B0237-0600