HD6413003RVF RENESAS [Renesas Technology Corp], HD6413003RVF Datasheet - Page 232
HD6413003RVF
Manufacturer Part Number
HD6413003RVF
Description
microcontroller (MCU)
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6413003RVF.pdf
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8.4.7 DMAC Activation
The DMAC can be activated by an internal interrupt, external request, or auto-request. The
available activation sources differ depending on the transfer mode and channel as indicated in
table 8-11.
Table 8-11 DMAC Activation Sources
Activation Source
Internal
interrupts
External
requests
Auto-request
Activation by Internal Interrupts: When an interrupt request is selected as a DMAC activation
source and the DTE bit is set to 1, that interrupt request is not sent to the CPU. It is not possible
for an interrupt request to activate the DMAC and simultaneously generate a CPU interrupt.
When the DMAC is activated by an interrupt request, the interrupt request flag is cleared
automatically. If the same interrupt is selected to activate two or more channels, the interrupt
request flag is cleared when the highest-priority channel is activated, but the transfer request is
held pending on the other channels in the DMAC, which are activated in their priority order.
IMIA0
IMIA1
IMIA2
IMIA3
TXI0
RXI0
TXI1
RXI1
Falling edge
of DREQ
Low input at
DREQ
Channels
0A and 1A 0B and 1B
Channels
Short Address Mode
214
Channels
2A and 3A 2B and 3B
Channels
Normal Block
Full Address
Mode
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