R01UH0823EJ0100 Rev.1.00 Page 388 of 1823
Jul 31, 2019
RX23W Group 19. Data Transfer Controller (DTCa)
19.2.11 DTC Status Register (DTCSTS)
VECN[7:0] Flags (DTC Active Vector Number Monitoring Flag)
While data transfer is in progress, these bits indicate the vector number corresponding to the request source for the
transfer.
When the DTCSTS register is read, the value of the VECN[7:0] flags is valid if the value of the ACT flag was 1 (data
transfer is in progress) and invalid if the value of the ACT flag was 0 (data transfer is not in progress).
For the correspondence between the DTC request sources and the vector addresses, refer to
section 15.3.1, Interrupt
Vector Table
in section 15, Interrupt Controller (ICUb).
ACT Flag (DTC Active Flag)
This flag indicates the state of data transfer operation.
[Setting condition]
When the data transfer is started by a transfer request.
[Clearing condition]
When the data transfer is completed in response to a transfer request.
Address(es): DTC.DTCSTS 0008 240Eh
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
ACT——————— VECN[7:0]
Value after reset:
0000000000000000
Bit Symbol Bit Name Description R/W
b7 to b0 VECN[7:0] DTC Active Vector Number
Monitoring Flag
These bits indicate the vector number for the request source when
data transfer is in progress.
The value is only valid if data transfer is in progress (the value of
the ACT flag is 1).
R
b14 to b8 — Reserved These bits are read as 0. Writing to these bits has no effect. R
b15 ACT DTC Active Flag 0: Data transfer is not in progress.
1: Data transfer is in progress.
R
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