R01UH0823EJ0100 Rev.1.00
Page 276 of 1823
Jul 31, 2019
RX23W Group
15. Interrupt Controller (ICUb)
15.2.7
DMAC Trigger Select Register m (DMRSRm) (m = DMAC channel number)
To specify the same interrupt source for multiple DMRSRm registers is disabled. The interrupt source that has been
selected for the DMRSRm trigger should not be specified as the DTC trigger. Otherwise, the correct operation is not
guaranteed.
DMRS[7:0] Bits (DMAC Trigger Select)
The vector number of the interrupt source used as the DMAC trigger is specified in 8 bits. Do not set the vector numbers
that are not assigned for the DMAC trigger.
For the correspondence between interrupt sources and interrupt vector numbers, see
Write to the DMRSRm register while the DMA transfer enable bit of the DMA transfer enable register
(DMACm.DMCNT.DTE) is cleared to 0.
Address(es): ICU.DMRSR0 0008 7400h, ICU.DMRSR1 0008 7404h, ICU.DMRSR2 0008 7408h, ICU.DMRSR3 0008 740Ch
b7
b6
b5
b4
b3
b2
b1
b0
DMRS[7:0]
Value after reset:
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b7 to b0
DMAC Trigger Select
These bits specify the vector number for the DMA transfer
request.
R/W