SH7751 Datasheet, PDF (624/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

14. Direct Memory Access Controller (DMAC)
14.3.4 Types of DMA Transfer
The DMAC supports the transfers shown in table 14.6. It can operate in single address mode, in
which either the transfer source or the transfer destination is accessed using the acknowledge
signal, or in dual address mode, in which both the transfer source and transfer destination
addresses are output. The actual transfer operation timing depends on the bus mode, which can be
either burst mode or cycle steal mode.
Table 14.6 Supported DMA Transfers
Transfer Source
External device
with DACK
External memory
Memory-mapped
external device
On-chip peripheral
module
Transfer Destination
External Device External
with DACK
Memory
Memory-Mapped On-Chip
External Device Peripheral Module
Not available
Single address Single address
mode
mode
Not available
Single address
mode
Dual address
mode
Dual address mode Dual address mode
Single address
mode
Dual address
mode
Dual address mode Dual address mode
Not available
Dual address Dual address mode Not available
mode
Rev.4.00 Oct. 10, 2008 Page 526 of 1122
REJ09B0370-0400