SH7729R Datasheet, PDF (451/855 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

Relationship between Request Modes and Bus Modes by DMA Transfer Category: Table
12.6 shows the relationship between request modes and bus modes by DMA transfer category.
Table 12.6 Relationship between Request Modes and Bus Modes by DMA Transfer
Category
Address
Mode
Transfer Category
Request Bus Transfer
Usable
Mode
Mode Size (Bits) Channels
Dual
External device with DACK and
external memory
External B/C 8/16/32/128 0,1
External device with DACK and
memory-mapped external device
External memory and external
memory
External memory and memory-
mapped external device
Memory-mapped external device and
memory-mapped external device
External memory and on-chip
peripheral module
Memory-mapped external device and
on-chip peripheral module
On-chip peripheral module and on-
chip peripheral module
External
All^*1
All ^*1
All ^*1
All ^*2
All ^*2
All ^*2
B/C 8/16/32/128 0, 1
B/C 8/16/32/128 0–3^*5
B/C 8/16/32/128 0–3^*5
B/C 8/16/32/128 0–3^*5
B/C^*3 8/16/32^*4
0–3^*5
B/C^*3 8/16/32^*4
0–3^*5
B/C^*3 8/16/32^*4
0–3^*5
X/Y memory and X/Y memory
X/Y memory and memory-mapped
external device
X/Y memory and on-chip peripheral
module
All
All ^*1
All ^*2
B/C 8/16/32/128 0–3
B/C 8/16/32/128 0–3
B/C^*3 8/16/32
0–3
X/Y memory and external memory
All
B/C 8/16/32/128 0–3
Single
External device with DACK and
external memory
External B/C 8/16/32/128 0, 1
External device with DACK and
memory-mapped external device
External B/C 8/16/32/128 0, 1
B: Burst, C: Cycle-steal
Notes: 1. External requests, auto requests and on-chip peripheral module (CMT) requests are all
available.
2. External requests, auto requests and on-chip peripheral module requests are all
available. When the IrDA, SCI, or A/D converter is also the transfer request source,
however, the transfer destination or transfer source must be the IrDA, SCI, or A/D
converter, respectively.
3. If the transfer request source is the IrDA, SCI, or A/D converter only cycle-steal mode is
available.
Rev. 5.0, 09/03, page 405 of 806