h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 207

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 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 7.2 outlines the functions of the DTC.
Table 7.2
Transfer Mode
Normal mode
Repeat mode
Block transfer 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
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
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
DTC Functions
Activation Source
IRQ
FRT ICI, OCI
8-bit timer CMI
Host interface IBF
SCI TXI or RXI
A/D converter ADI
IIC IICI
Software
Rev. 3.00 Jan 18, 2006 page 179 of 1044
Section 7 Data Transfer Controller
Transfer
Source
24 bits
Address Registers
REJ09B0280-0300
Transfer
Destination
24 bits