r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 495
r4f2426
Manufacturer Part Number
r4f2426
Description
16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R4F2426.pdf
(1302 pages)
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9.2.7
DTCER which is comprised of registers, DTCERA to DTCERI, is a register that specifies DTC
activation interrupt sources. The correspondence between interrupt sources and DTCE bits is
shown in table 9.2. For DTCE bit setting, use bit manipulation instructions such as BSET and
BCLR for reading and writing. If all interrupts are masked, multiple activation sources can be set
at one time (only at the initial setting) by writing data after executing a dummy read on the
relevant register.
9.2.8
DTVECR sets a vector number for the software activation interrupt.
Bit
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
Bit Name
DTCE7
DTCE6
DTCE5
DTCE4
DTCE3
DTCE2
DTCE1
DTCE0
Bit Name
DTVEC7
DTVEC6
DTVEC5
DTVEC4
DTVEC3
DTVEC2
DTVEC1
DTVEC0
DTC Enable Registers A to I (DTCERA to DTCERI)
DTC Vector Register (DTVECR)
Initial Value
0
0
0
0
0
0
0
0
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
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
DTC Activation Enable
Setting this bit to 1 specifies a relevant interrupt
source to a DTC activation source.
[Clearing conditions]
•
•
•
When the DISEL bit is 1 and the data transfer has
ended
When the specified number of transfers have
ended
These bits are not automatically cleared when the
DISEL bit is 0 and the specified number of
transfers have not ended
When 0 is written to DTCE after reading
DTCE = 1
Description
DTC Software Activation Vectors 7 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 DTVEC7
to DTVEC0 = H'10, the vector address is H'0420.
These bits can be written to only when the
SWDTE bit is 0.
Rev. 1.00 Sep. 19, 2008 Page 467 of 1270
Section 9 Data Transfer Controller (DTC)
REJ09B0466-0100
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