Datasheet

Section 7 Data Transfer Controller (DTC)
Rev. 2.00 Aug. 20, 2008 Page 163 of 1198
REJ09B0403-0200
7.2 Register Descriptions
The DTC has the following registers.
• 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)
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.
• DTC enable registers (DTCER)
• DTC vector register (DTVECR)
• Keyboard comparator control register (KBCOMP)
• Event counter control register (ECCR)
• Event counter status register (ECS)