SH7065 Datasheet, PDF (362/941 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

Section 9 Direct Memory Access Controller (DMAC)
Relationship between DMA Transfer Type, Request Mode, and Bus Mode
Table 9.6 shows the relationship between the type of DMA transfer, the request mode, and the bus
mode.
Table 9.6 Relationship between DMA Transfer Type, Request Mode, and Bus Mode
Address
Mode Type of Transfer
Request Bus
Mode Mode
Single
External device with DACK and
external memory
External B/C
Dual
External device with DACK and
memory-mapped external device
External B/C
External memory and external memory Any^*1
B/C
External memory and memory-mapped Any^*1
B/C
external device
Memory-mapped external device and Any^*1
B/C
memory-mapped external device
External memory and on-chip memory Any^*1
B/C
External memory and on-chip
peripheral module
Any^*2
B/C
Memory-mapped external device and Any^*1
B/C
on-chip memory
Memory-mapped external device and Any^*2
B/C
on-chip peripheral module
On-chip memory and on-chip memory Any^*1
B/C
On-chip memory and on-chip peripheral Any^*2
B/C
module
On-chip peripheral module and on-chip Any^*2
B/C
peripheral module
Legend: B: Burst
C: Cycle steal
Transfer
Size (Bits)
8/16/32
Usable
Channels
0, 1
8/16/32
0, 1
8/16/32
0–3
8/16/32
0–3
8/16/32
0–3
8/16/32
0–3
8/16/32^*3 0–3
8/16/32
0–3
8/16/32^*3 0–3
8/16/32
0–3
8/16/32^*3 0–3
8/16/32^*3 0–3
Notes: 1. External request, auto-request, or on-chip peripheral module request possible. The SCI
or A/D converter cannot be specified as the transfer request source in on-chip
peripheral module request mode.
2. External request, auto-request, or on-chip peripheral module request possible. If the
transfer request source is also the SCI or A/D converter, the transfer source or transfer
destination must be the SCI or A/D converter.
3. Access size permitted for register of on-chip peripheral module that is the transfer
source or transfer destination.
Rev. 5.00 Sep 11, 2006 page 340 of 916
REJ09B0332-0500