HD6417705F133V Datasheet, PDF (308/741 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

8.4.4 DMA Transfer Types
DMA transfer has two types; single address mode transfer and dual address mode transfer. They
depend on the number of bus cycles of access to source and destination. A data transfer timing
depends on the bus mode, which has cycle steal mode and burst mode. The DMAC supports the
transfers shown in table 8.8.
Table 8.8 Supported DMA Transfers
Destination
Source
External
Device with External
DACK
Memory
Memory-
Mapped
On-Chip Peripheral
External Device Module
External device with DACK Not available Dual, single Dual, single
Not available
External memory
Dual, single Dual
Dual
Dual
Memory-mapped external
device
Dual, single Dual
Dual
Dual
On-chip peripheral module Not
available
Dual
Dual
Dual
Notes: 1. Dual: Dual address mode
2. Single: Single address mode
3. A 16-byte transfer is available only for the registers to which longword-size access is
enabled in the on-chip peripheral modules.
Rev. 2.00, 09/03, page 260 of 690