E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 348

• Manufacturer Part Number: E62655RUSB
• Description: EMULATOR BASE H8S/2655R W/USB
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of E62655RUSB

• Contents: E6000 Emulator Unit and 4 Logic Probes
• For Use With/related Products: H8S/2655R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Section 8 Data Transfer Controller
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.
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.
When clearing the SWDTE bit to 0 by software, write 0 to SWDTE after reading SWDTE set to 1.
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. 5.00 Sep 14, 2006 page 318 of 1060
REJ09B0331-0500
Note: *
Bit
Initial value
R/W
DTC Vector Register (DTVECR)
A value of 1 can always be written to the SWDTE bit, but 0 can only be written after 1
is read.
Description
DTC software activation is disabled
[Clearing condition]
When the DISEL bit is 0 and the specified number of transfers have not ended
DTC software activation is enabled
[Holding conditions]
:
:
:
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
R/(W) *
7
0
DTVEC6
R/W
6
0
DTVEC5
R/W
5
0
DTVEC4
R/W
4
0
DTVEC3
R/W
3
0
DTVEC2
R/W
2
0
DTVEC1
R/W
1
0
(Initial value)
DTVEC0
R/W
0
0