h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 219

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

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 8.2 outlines the functions of the DTC.
Table 8.2
Transfer Mode
•
•
•
Normal mode
 One transfer request transfers one
 Memory addresses are incremented
 Up to 65,536 transfers possible
Repeat mode
 One transfer request transfers one
 Memory addresses are incremented
 After the specified number of
Block transfer mode
 One transfer request transfers a
 Block size is from 1 to 256 bytes or
 Up to 65,536 transfers possible
 A block area can be designated at
byte or one word
or decremented by 1 or 2
byte or one word
or decremented by 1 or 2
transfers (1 to 256), the initial state
resumes and operation continues
block of the specified size
words
either the source or destination
DTC Functions
Activation Source
•
•
•
•
•
•
•
IRQ
TPU TGI
SCI TXI or RXI
A/D converter ADI
Motor control PWM
timer CMI
HCAN RM0
(mail box 0)
Software
Rev. 5.00 Sep 22, 2005 page 193 of 1136
Section 8 Data Transfer Controller (DTC)
Transfer
Source
24 bits
Address Registers
REJ09B0257-0500
Transfer
Destination
24 bits