RX610 Group
12. DMA Controller (DMAC)
R01UH0032EJ0120 Rev.1.20
Page 310 of 1006
Feb 20, 2013
12.2.3
DMA Control Register B (DMCRB)
b7
b6
b5
b4
b3
b2
b1
b0
Value after reset:
0
0
0
0
0
0
0
0
—
—
—
—
—
—
—
DSCLR
Addresses: DMAC0.DMCRB 0008 2404h, DMAC1.DMCRB 0008 240Ch
DMAC2.DMCRB 0008 2414h, DMAC3.DMCRB 0008 241Ch
Bit
Symbol
Bit Name
Description
R/W
b0
DSCLR
DMAC Internal Status Clear
Writing 1 to this bit initializes the DMAC internal status.
Do not write 0 to this bit. This bit is always read as 0.
R/W
b7 to b1
Reserved
These bits are always read as 0. The write value should
always be 0.
R/W
DMCRB is used to control DMA transfer.
DSCLR Bit (DMAC Internal Status Clear)
This bit initializes the internal status of the DMAC.
Setting the DSCLR bit to 1 when DMA has been suspended cancels the remainder of the DMA transfer and initializes the
DMAC's internal transfer state. However, no registers are initialized. Since a written "1" is not retained, this bit is always
read as 0. Writing 0 has no effect.
Do not set the DSCLR bit during data transfer. Only set it while the DMAC is not active or DMA transfer is disabled.
Summary of Contents for RX600 Series
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