h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 182

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 Data Transfer Controller (DTC)
8.2.8
DTVECR is an 8-bit readable/writable register that enables or disables DTC activation by
software, and sets a vector number for the software activation interrupt.
Rev. 2.00 Dec. 05, 2005 Page 144 of 724
REJ09B0200-0200
Bit
7
6
5
4
3
2
1
0
Bit Name
SWDTE
DTVEC6
DTVEC5
DTVEC4
DTVEC3
DTVEC2
DTVEC1
DTVEC0
DTC Vector Registers A to G (DTVECRA to DTVECRG)
Initial
Value
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 be written
to this bit.
[Clearing conditions]
•
•
When the DISEL bit is 1 and data transfer has ended or
when the specified number of transfers have ended,
this bit will not be cleared.
DTC Software Activation Vectors 0 to 6
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 bit
SWDTE is 0, these bits can be written.
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.