SH7065 Datasheet, PDF (356/941 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

Section 9 Direct Memory Access Controller (DMAC)
9.3.4 Types of DMA Transfer
The DMAC supports the transfers shown in table 9.5. 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 9.5 Supported DMA Transfers
Transfer Destination
External
Device with
Transfer Source DACK
External
Memory
Memory-
Mapped
External
Device
On-Chip
Memory
On-Chip
Peripheral
Module
External device
with DACK
Not available Single address Single address Not available Not available
mode
mode
External memory Single address Dual address Dual address Dual address Dual address
mode
mode
mode
mode
mode
Memory-mapped Single address Dual address Dual address Dual address Dual address
external device mode
mode
mode
mode
mode
On-chip memory Not available Dual address Dual address Dual address Dual address
mode
mode
mode
mode
On-chip peripheral Not available Dual address Dual address Dual address Dual address
module
mode
mode
mode
mode
Rev. 5.00 Sep 11, 2006 page 334 of 916
REJ09B0332-0500