HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 231
HD6417144
Manufacturer Part Number
HD6417144
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417144.pdf
(930 pages)
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10.4.4
The DMAC supports the transfers shown in table 10.4. It can operate in the single address mode,
in which either the transfer source or destination is accessed using an acknowledge signal, or dual
access mode, in which both the transfer source and destination addresses are output. The dual
access mode consists of a direct address mode, in which the output address value is the object of a
direct data transfer, and an indirect address mode, in which the output address value is not the
object of the data transfer, but the value stored at the output address becomes the transfer object
address. The actual transfer operation timing varies with the bus mode. The DMAC has two bus
modes: cycle-steal mode and burst mode.
Table 10.4 Supported DMA Transfers
Note:
Source
External device with DACK Not available
External memory
Memory-mapped external
device
On-chip memory
On-chip peripheral module Not available
Dual address mode includes both direct address mode and indirect address mode.
DMA Transfer Types
External Device
with DACK
Single
Single
Not available
External
Memory
Single
Dual
Dual
Dual
Dual
10. Direct Memory Access Controller (DMAC)
Rev.4.00 Mar. 27, 2008 Page 187 of 882
Destination
Memory-
Mapped
External
Device
Single
Dual
Dual
Dual
Dual
On-Chip
Memory
Not available Not available
Dual
Dual
Dual
Dual
REJ09B0108-0400
On-Chip
Peripheral
Module
Dual
Dual
Dual
Dual
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