HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 240
HD6417144
Manufacturer Part Number
HD6417144
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417144.pdf
(930 pages)
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10. Direct Memory Access Controller (DMAC)
Relationship between Request Modes and Bus Modes by DMA Transfer Category:
Table 10.5 shows the relationship between request modes and bus modes by DMA transfer
category.
Table 10.5 Relationship of Request Modes and Bus Modes by DMA Transfer Category
B: Burst
C: Cycle steal
Notes: 1. External request, auto-request or on-chip peripheral module request enabled. However,
Rev.4.00 Mar. 27, 2008 Page 196 of 882
REJ09B0108-0400
Address
Mode
Single
Dual
2. External request, auto-request or on-chip peripheral module request possible. However,
3. When the transfer request source is the SCI, only cycle steal mode is possible.
4. Access size permitted by register of on-chip peripheral module that is the transfer
5. When the transfer request is an external request, channels 0 and 1 only can be used.
Transfer Category
External device with DACK and
external memory
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 memory
External memory and on-chip
peripheral module
Memory-mapped external device and
on-chip memory
Memory-mapped external device and on-
chip peripheral module
On-chip memory and on-chip memory
On-chip memory and on-chip
peripheral module
On-chip peripheral module and on-
chip peripheral module
in the case of on-chip peripheral module request, it is not possible to specify the SCI or
A/D converter for the transfer request source.
if 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.
source or transfer destination.
Request
Mode
External
External
Any*
Any*
Any*
Any*
Any*
Any*
Any*
Any*
Any*
Any*
1
1
1
1
2
1
2
1
2
2
Bus
Mode
B/C
B/C
B/C
B/C
B/C
B/C
B/C*
B/C
B/C*
B/C
B/C*
B/C*
3
3
3
3
Transfer
Size (Bits)
8/16/32
8/16/32
8/16/32
8/16/32
8/16/32
8/16/32
8/16/32*
8/16/32
8/16/32*
8/16/32
8/16/32*
8/16/32*
4
4
4
4
Usable
Channels
0, 1
0, 1
0 to 3*
0 to 3*
0 to 3*
0 to 3*
0 to 3*
0 to 3*
0 to 3*
0 to 3*
0 to 3*
0 to 3*
5
5
5
5
5
5
5
5
5
5
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