h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 189
h8s-2649
Manufacturer Part Number
h8s-2649
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2649.pdf
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8.5.2
In repeat mode, one operation transfers one byte or one word of data. Table 8.3 lists the register
information in repeat mode.
From 1 to 256 transfers can be specified. Once the specified number of transfers have 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 8.3
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 Information in Repeat Mode
Figure 8.6 Memory Mapping in Repeat Mode
Repeat area
SAR
DAR
CRAH
CRAL
CRB
Abbreviation
Transfer
Rev. 2.00 Dec. 05, 2005 Page 151 of 724
Section 8 Data Transfer Controller (DTC)
Function
Designates source address
Designates destination address
Holds number of transfers
Designates transfer count
Not used
REJ09B0200-0200
DAR
or
SAR
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