Table 13.9 Relationship Of Request Modes And Bus Modes By Dma Transfer Category - Renesas HD6417641 Hardware Manual

Table 13.9 Relationship of Request Modes and Bus Modes by DMA Transfer Category

Address
Mode Transfer Category
External device with DACK and external memory
Dual
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
X/Y memory, U memory and X/Y memory,
U memory
X/Y memory, U memory and memory-mapped
external device
X/Y memory, U memory and on-chip peripheral
module
X/Y memory, U memory and external memory
External device with DACK and external memory
Single
External device with DACK and memory-mapped
external device
[Legend]
B: Burst
C: Cycle steal
Notes: 1. External requests, auto requests, and on-chip peripheral module requests are all
available. In the case of on-chip peripheral module requests, however, CMT0, CMT1,
and MTU0 to MTU4 are only available.
2. External requests, auto requests, and on-chip peripheral module requests are all
available. However, for on-chip peripheral module requests, the module must be
designated as the transfer request source or the transfer destination except CMT0,
CMT1, and MTU0 to MTU4.
3. For on-chip peripheral module requests, the transfer source is in cycle steal mode
except CMT0, CMT1, and MTU0 to MTU4.
4. Access size permitted for the on-chip peripheral module register functioning as the
transfer source or transfer destination.
5. If the transfer request is an external request, channels 0 to 1 are only available.
Section 13 Direct Memory Access Controller (DMAC)
Request Bus
Mode Mode
External B/C
External B/C
1
All* B/C
1
All* B/C
1
All* B/C
2 3
All* B/C*
2 3
All* B/C*
2 3
All* B/C*
1
All* B/C
1
All* B/C
2 3
All* B/C*
1
All* B/C
External B/C
External B/C
Rev. 4.00 Sep. 14, 2005 Page 439 of 982
Transfer Usable
Size (Bits) Channels
8/16/32/128 0, 1
8/16/32/128 0, 1
5
8/16/32/128 0 to 3*
5
8/16/32/128 0 to 3*
5
8/16/32/128 0 to 3*
4 5
8/16/32/128* 0 to 3*
4 5
8/16/32/128* 0 to 3*
4 5
8/16/32/128* 0 to 3*
5
8/16/32/128 0 to 3*
5
8/16/32/128 0 to 3*
4 5
8/16/32/128* 0 to 3*
5
8/16/32/128 0 to 3*
8/16/32/128 0, 1
8/16/32/128 0, 1
REJ09B0023-0400