SH7032 Datasheet, PDF (210/687 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 9 Direct Memory Access Controller (DMAC)
9.2 Register Descriptions
9.2.1 DMA Source Address Registers 0–3 (SAR0–SAR3)
DMA source address registers 0–3 (SAR0–SAR3) are 32-bit read/write registers that specify the
source address of a DMA transfer. During a DMA transfer, these registers indicate the next source
address (in single-address mode, SAR is ignored in transfers from external devices with DACK to
memory-mapped external devices or external memory).
The initial value after a reset or in standby mode is undefined.
Bit
31
30
29
28
27
26
25
24
Initial value
Read/Write
—
—
—
—
—
—
—
—
R/W R/W R/W R/W R/W R/W R/W R/W
Bit
Initial value
Read/Write
23
22
21
—
—
—
R/W R/W R/W
…
0
…
…
—
…
R/W
9.2.2 DMA Destination Address Registers 0–3 (DAR0–DAR3)
DMA destination address registers 0–3 (DAR0–DAR3) are 32-bit read/write registers that specify
the destination address of a DMA transfer. During a DMA transfer, these registers indicate the
next destination address (in single-address mode, DAR is ignored in transfers from memory-
mapped external devices or external memory to external devices with DACK). The initial value
after a reset or in standby mode is undefined.
Bit
31
30
29
28
27
26
25
24
Initial value
Read/Write
—
—
—
—
—
—
—
—
R/W R/W R/W R/W R/W R/W R/W R/W
Bit
Initial value
Read/Write
23
22
21
—
—
—
R/W R/W R/W
…
0
…
…
—
…
R/W
Rev. 7.00 Jan 31, 2006 page 184 of 658
REJ09B0272-0700