HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 362
HD6412320
Manufacturer Part Number
HD6412320
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412320.pdf
(1302 pages)
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Section 8 Data Transfer Controller
8.3.6
In repeat mode, one operation transfers one byte or one word of data.
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 8.7 lists the register information in repeat mode and figure 8.7 shows the memory map in
repeat mode.
Table 8.7
Name
DTC source address register
DTC destination address register
DTC transfer count register AH
DTC transfer count register AL
DTC transfer count register B
Rev.6.00 Sep. 27, 2007 Page 332 of 1268
REJ09B0220-0600
SAR or
DAR
Repeat Mode
Register Information in Repeat Mode
Repeat area
Figure 8.7 Memory Map in Repeat Mode
Abbreviation
SAR
DAR
CRAH
CRAL
CRB
Transfer
Function
Designates source address
Designates destination address
Holds number of transfers
Transfer counter
Not used
DAR or
SAR
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