R01UH0822EJ0100 Rev.1.00
Page 257 of 1041
Jul 31, 2019
RX13T Group
16. Data Transfer Controller (DTCb)
16.2.12
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 14, 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.
When the sequence transfer is resumed.
[Clearing condition]
When the data transfer is completed in response to a transfer request.
When the sequence transfer is suspended.
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:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b7 to b0
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
DTC Active Flag
0: Data transfer is not in progress.
1: Data transfer is in progress.
R