SH7205 Datasheet, PDF (482/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 11 Direct Memory Access Controller (DMAC)
11.10 Units of Transfer and Transfer Byte Positions
The bit size for single data transfer can be set to a byte (8 bits), word (16 bits), or longword (32
bits).
Figure 11.13 is an example of DMA data-byte control for 32-bit bus width.
• Example of 8-bit transfer
Start address
Source side
FF00 4000
FF00 4001
FF00 4002
FF00 4003
DMAC on-chip 32-bit data buffer
D31,....,D0
D31,....,D0
Destination side
0040 0203
0040 0204
0040 0205
0040 0206
Start address
• Example of 16-bit transfer
Source side
Start address
0000 8002
0000 8004
DMAC on-chip 32-bit data buffer
D31,....,D0
D31,....,D0
Destination side
FF60 0806
FF60 0808
Start address
: Indicates active bytes
Figure 11.13 Example of DMA Data-Byte Control for 32-Bit Bus Width
Rev. 1.00 Mar. 25, 2008 Page 450 of 1868
REJ09B0372-0100