HMS30C7110 Datasheet, PDF (127/161 Pages) List of Unclassifed Manufacturers – Multipurpose Network Processor

STOP
[2]
ON_OFF
[1]
SW_TRIG [0]
HMS30C7110
Stop the DMA operation.
1: DMA stops as soon as the current atomic transfer ends.
Note : If there is no current atomic transfer, DMA stops immediately.
Due to possible current atomic transfer, "stop" may take several cycles.
The finish of "stop" operation can be detected by waiting until the
channel on/off bit is set to off. This stop is actual "stop". It means that if
DMA starts again all the values including TC start from initial values.
DMA channel on/off bit.
0: DMA channel is turned off. (DMA request to this channel is ignored.)
1: DMA channel is turned on and the DMA request is handled.
Note : This bit is automatically set to off if we set the control register
(DCON) to "no auto reload" and/or this register (MASKTRIG) to "stop".
Note that when "no auto reload" is set, this bit becomes "off" when TC
becomes 0. On the other hand, if "stop" is set, this bit becomes "off" as
soon as the current automic transfer finishes. This bit should not be
changed manually during DMA operation.
Trigger the DMA channel in S/W.
1: it requests a DMA operation to this controller.
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