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Section 10 Direct Memory Access Controller
Page 424 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
(3) Relationship between Request Modes and Bus Modes by DMA Transfer Category
Table 10.9 shows the relationship between request modes and bus modes by DMA transfer
category.
Table 10.9 Relationship of Request Modes and Bus Modes by DMA Transfer Category
Address
Mode
Transfer Category
Request
Mode
Bus
Mode
Transfer
Size (Bits)
Usable
Channels
Dual External device with DACK and external
memory
External B/C 8/16/32/128 0, 1*
6
External device with DACK and memory-
mapped external device
External B/C 8/16/32/128 0, 1*
6
External device with DACK and on-chip
peripheral module
External B/C 8/16/32/128*
2
0, 1*
6
External device with DACK and on-chip
memory
External B/C 8/16/32/128*
2
0, 1*
6
External memory and external memory All*
4
B/C 8/16/32/128 0 to 15*
3
External memory and memory-mapped
external device
All*
4
B/C 8/16/32/128 0 to 15*
3
Memory-mapped external device and
memory-mapped external device
All*
4
B/C 8/16/32/128 0 to 15*
3
External memory and on-chip peripheral
module
All*
1
B/C*
5
8/16/32/128*
2
0 to 15*
3
Memory-mapped external device and
on-chip peripheral module
All*
1
B/C*
5
8/16/32/128*
2
0 to 15*
3
On-chip peripheral module and on-chip
peripheral module
All*
1
B/C*
5
8/16/32/128*
2
0 to 15*
3
On-chip memory and on-chip memory All*
4
B/C 8/16/32/128 0 to 15*
3
On-chip memory and memory-mapped
external device
All*
4
B/C 8/16/32/128 0 to 15*
3
On-chip memory and on-chip peripheral
module
All*
1
B/C*
5
8/16/32/128*
2
0 to 15*
3
On-chip memory and external memory All*
4
B/C 8/16/32/128 0 to 15*
3
Single External device with DACK and external
memory
External B/C 8/16/32/128 0, 1*
6
External device with DACK and memory-
mapped external device
External B/C 8/16/32/128 0, 1*
6
[Legend]
B: Burst
C: Cycle steal