p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 170

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 7 Data Transfer Controller (DTC)
7.2.8
DTVECR enables or disables DTC activation by software, and sets a vector number for the
software activation interrupt.
Rev. 1.00 Sep. 21, 2006 Page 132 of 658
REJ09B0310-0100
Bit
7
6
5
4
3
2
1
0
Bit Name Initial Value
SWDTE
DTVEC6
DTVEC5
DTVEC4
DTVEC3
DTVEC2
DTVEC1
DTVEC0
DTC Vector Register (DTVECR)
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
DTC Software Activation Enable
Setting this bit to 1 activates DTC. Only 1 can always
be written to this bit. Writing 0 is enabled only after 1
has been read.
[Clearing conditions]
•
•
[Holding conditions]
•
•
•
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.
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.
When the DISEL bit is set to 1 and data transfer has
ended
The specified number of transfers have ended
On data transfer by software activation