r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 507

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

9.5.2
In repeat mode, one operation transfers one byte or one word of data. Table 9.5 lists the register
function in repeat mode. From 1 to 256 transfers can be specified. Once the specified number of
transfers has ended, the initial state of the transfer counter and the address register specified as the
repeat area is restored, and transfer is repeated. In repeat mode the transfer counter value does not
reach H'00, and therefore CPU interrupts cannot be requested when DISEL = 0.
Table 9.5
Name
DTC source address register
DTC destination address register
DTC transfer count register AH
DTC transfer count register AL
DTC transfer count register B
SAR
or
DAR
Repeat Mode
Register Function in Repeat Mode
Figure 9.7 Memory Mapping in Repeat Mode
Repeat area
Abbreviation
SAR
DAR
CRAH
CRAL
CRB
Transfer
Rev. 1.00 Sep. 19, 2008 Page 479 of 1270
Section 9 Data Transfer Controller (DTC)
Function
Designates source address
Designates destination address
Holds number of transfers
Designates transfer count
Not used
REJ09B0466-0100
DAR
or
SAR