SH7261 Datasheet, PDF (400/1348 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 11 Direct Memory Access Controller (DMAC)
Blocks allocated to
dispersed locations
Address
AAAA
Start
Software processing
< DMAC register state >
Destination
address register
Undefined
Byte count
register
Undefined
Reload
AAAA
An
Current
(1) Block A setting
Block A
byte number An
BBBB
End
Start
BBBB
Bn
AAAA
An
Start of DMAC transfer
BBBB
Bn
Block B transfer setting:
automatic load
BBBB
Bn
Reload
Current
Reload
(2) Block B setting
(3) Reload function
enable bit set
(4) DMA transfer
enable set
Current
Block B
byte number Bn
Interrupt on
block A
transfer end
End
CCCC
Block C
byte number Cn
Start
End
CCCC
BBBB
Cn
Reload
(5) Block C setting
Bn
Current
CCCC
Cn
Block C transfer setting:
automatic load
CCCC
Cn
Block A, B, C transfer end
Reload
Current
(6) Reload function
enable bit set
Figure 11.13 Example of Transferring Blocks between Dispersed Areas
by Using the Reload Function.
Rev. 2.00 Sep. 07, 2007 Page 368 of 1312
REJ09B0320-0200