RX610 Group
12. DMA Controller (DMAC)
R01UH0032EJ0120 Rev.1.20
Page 313 of 1006
Feb 20, 2013
12.2.6
DMA Control Register E (DMCRE)
b7
b6
b5
b4
b3
b2
b1
b0
Value after reset:
0
0
0
0
0
0
0
0
—
—
—
—
—
—
—
DEN
Addresses: DMAC0.DMCRE 0008 2407h, DMAC1.DMCRE 0008 240Fh
DMAC2.DMCRE 0008 2417h, DMAC3.DMCRE 0008 241Fh
Bit
Symbol
Bit Name
Description
R/W
b0
DEN
DMA Transfer Enable
0: DMA transfer is disabled
1: DMA transfer is enabled
R/W
b7 to b1
Reserved
These bits are always read as 0. The write value should
always be 0.
R/W
DMCRE is used to control DMA transfer.
DEN Bit (DMA Transfer Enable)
The DEN bit enables DMA transfer.
While the ECLR bit is 1, the DEN bit is automatically cleared to 0 at the end of DMA transfer.
When the DEN bit is cleared to 0 in operand transfer mode, DMA transfer on the given channel is suspended after the
current single-operand transfer is completed. The DMA transfer is restarted by setting the DEN bit to 1 again.
In nonstop transfer mode, DMA transfer is not suspended by clearing the DEN bit to 0. Instead, DMA transfer continues
until it is completed.
Summary of Contents for RX600 Series
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