E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 347

• 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

8.2.7
The DTC enable registers comprise six 8-bit readable/writable registers, DTCERA to DTCERF,
with bits corresponding to the interrupt sources that can activate the DTC. These bits enable or
disable DTC service for the corresponding interrupt sources.
The DTC enable registers are initialized to H'00 by a reset and in hardware standby mode.
Bit n—DTC Activation Enable (DTCEn)
Note: n = 7 to 0
A DTCE bit can be set for each interrupt source that can activate the DTC. The correspondence
between interrupt sources and DTCE bits is shown in table 8.4, together with the vector number
generated for each interrupt controller.
For DTCE bit setting, read/write operations must be performed using bit-manipulation instructions
such as BSET and BCLR. For the initial setting only, however, when multiple activation sources
are set at one time, it is possible to disable interrups and write after executing a dummy read on the
relevant register.
Bit n
DTCEn
0
1
Bit
Initial value
R/W
DTC Enable Registers (DTCER)
Description
DTC activation by this interrupt is disabled
[Clearing conditions]
DTC activation by this interrupt is enabled
[Holding condition]
When the DISEL bit is 0 and the specified number of transfers have not ended
:
:
:
When the DISEL bit is 1 and the data transfer has ended
When the specified number of transfers have ended
DTCE7
R/W
7
0
DTCE6
R/W
6
0
DTCE5
R/W
5
0
DTCE4
R/W
4
0
Rev. 5.00 Sep 14, 2006 page 317 of 1060
DTCE3
R/W
3
0
Section 8 Data Transfer Controller
DTCE2
R/W
2
0
DTCE1
R/W
REJ09B0331-0500
1
0
(Initial value)
DTCE0
R/W
0
0