Dma Transfer Types; Table 13.8 Supported Dma Transfers - Renesas HD6417641 Hardware Manual

Section 13 Direct Memory Access Controller (DMAC)
13.4.4

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 13.8.

Table 13.8 Supported DMA Transfers

External Device
with DACK
Source
External device Not available
with DACK
External memory Dual, single
Memory-mapped Dual, single
external device
On-chip Not available
peripheral module
X/Y memory, Not available
U memory
Notes: 1. Dual: Dual address mode
2. Single: Single address mode
3. 16-byte transfer is not available for on-chip peripheral modules.
Rev. 4.00 Sep. 14, 2005 Page 432 of 982
REJ09B0023-0400
Destination
External Memory-Mapped
Memory External Device
Dual, single Dual, single
Dual Dual
Dual Dual
Dual Dual
Dual Dual
On-Chip X/Y Memory
Peripheral Module U Memory
Not available Not available
Dual Dual
Dual Dual
Dual Dual
Dual Dual