HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 176

• Manufacturer Part Number: HD6432160
• Description: Hitachi 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

7.2
The DTC has the following registers.
These six registers cannot be directly accessed from the CPU. When a DTC activation interrupt
source occurs, the DTC reads a set of register information that is stored in on-chip RAM to the
corresponding DTC registers and transfers data. After the data transfer, it writes a set of updated
register information back to on-chip RAM.
Rev. 2.0, 08/02, page 136 of 788
DTC mode register A (MRA)
DTC mode register B (MRB)
DTC source address register (SAR)
DTC destination address register (DAR)
DTC transfer count register A (CRA)
DTC transfer count register B (CRB)
DTC enable registers A to E (DTCERA to DTCERE)
DTC vector register (DTVECR)
Interrupt
request
Legend:
Register Descriptions
MRA, MRB
CRA, CRB
SAR
DAR
DTCERA to DTCERE
DTVECR
Interrupt controller
CPU interrupt
request
: DTC mode register A, B
: DTC transfer count register A, B
: DTC source address register
: DTC destination register
: DTC enable registers A to E
: DTC vector register
Figure 7.1 Block Diagram of DTC
DTC
Internal address bus
Internal data bus
On-chip RAM