Datasheet

Section 7 Data Transfer Controller (DTC)
Rev. 2.00 Sep. 28, 2009 Page 158 of 870
REJ09B0429-0200
7.2.8 DTC Vector Register (DTVECR)
DTVECR enables or disables DTC activation by software, and sets a vector number for the
software activation interrupt.
Bit Bit Name
Initial
Value
R/W Description
7 SWDTE 0 R/W DTC Software Activation Enable
Setting this bit to 1 activates DTC. Only 1 can be written to
this bit.
[Clearing conditions]
• When the DISEL bit is 0 and the specified number of
transfers have not ended
• When 0 is written to the DISEL bit after a software-
activated data transfer end interrupt (SWDTEND)
request has been sent to the CPU.
This bit will not be cleared when the DISEL bit is 1 and
data transfer has ended or when the specified number of
transfers has ended.
6 to 0 DTVEC6 to
DTVEC0
All 0 R/W DTC Software Activation Vectors 6 to 0
These bits specify a vector number for DTC software
activation.
The vector address is expressed as H'0400 + (vector
number × 2). For example, when DTVEC6 to DTVEC0 =
H'10, the vector address is H'0420. When the SWDTE bit
is 0, these bits can be written to.