HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 334

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

8.2.8
Note: * Bits DTVEC6 to DTVEC0 can be written to when SWDTE = 0.
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.
DTVECR is initialized to H'00 by a reset and in hardware standby mode.
Bit 7—DTC Software Activation Enable (SWDTE): Enables or disables DTC activation by
software.
Bit 7
SWDTE
0
1
Bits 6 to 0—DTC Software Activation Vectors 6 to 0 (DTVEC6 to DTVEC0): These bits
specify a vector number for DTC software activation.
The vector address is expressed as H'0400 + ((vector number) << 1). <<1 indicates a one-bit left-
shift. For example, when DTVEC6 to DTVEC0 = H'10, the vector address is H'0420.
Rev.4.00 Sep. 07, 2007 Page 304 of 1210
REJ09B0245-0400
Bit
Initial value :
R/W
DTC Vector Register (DTVECR)
Description
DTC software activation is disabled
[Clearing conditions]
•
•
DTC software activation is enabled
[Holding conditions]
•
•
•
:
:
When the DISEL bit is 0 and the specified number of transfers have not ended
When 0 is written after a software activation data-transfer-complete interrupt is
issued to the CPU
When the DISEL bit is 1 and data transfer has ended
When the specified number of transfers have ended
During data transfer due to software activation
SWDTE DTVEC6 DTVEC5 DTVEC4 DTVEC3 DTVEC2 DTVEC1 DTVEC0
R/(W)
7
0
R/(W) *
6
0
R/(W) *
5
0
R/(W) *
4
0
R/(W) *
0
3
R/(W) *
2
0
R/(W) *
1
0
(Initial value)
R/(W) *
0
0