HD6432633 Datasheet, PDF (394/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

The DTC transfer mode can be normal mode, repeat mode, or block transfer mode.
The 24-bit SAR designates the DTC transfer source address and the 24-bit DAR designates the
transfer destination address. After each transfer, SAR and DAR are independently incremented,
decremented, or left fixed.
Table 9-2 outlines the functions of the DTC.
Table 9-2 DTC Functions
Transfer Mode
• Normal mode
 One transfer request transfers one
byte or one word
 Memory addresses are incremented
or decremented by 1 or 2
 Up to 65,536 transfers possible
• Repeat mode
 One transfer request transfers one
byte or one word
 Memory addresses are incremented
or decremented by 1 or 2
 After the specified number of
transfers (1 to 256), the initial state
resumes and operation continues
• Block transfer mode
 One transfer request transfers a block
of the specified size
 Block size is from 1 to 256 bytes or
words
 Up to 65,536 transfers possible
 A block area can be designated at
either the source or destination
Activation Source
• IRQ
• TPU TGI
• 8-bit timer CMI
• SCI TXI or RXI
• A/D converter ADI
• DMAC DEND
• Software
Address Registers
Transfer Transfer
Source Destination
24 bits
24 bits
340