HD6432670 Hitachi, HD6432670 Datasheet - Page 451
HD6432670
Manufacturer Part Number
HD6432670
Description
(HD64F267x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432670.pdf
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9.5.2
In repeat mode, one operation transfers one byte or one word of data. Table 9.4 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 9.4
Name
DTC source address register
DTC destination address register
DTC transfer count register AH
DTC transfer count register AL
DTC transfer count register B
Repeat Mode
SAR
Register Function in Repeat Mode
Figure 9.5 Memory Mapping in Normal Mode
Abbreviation
SAR
DAR
CRAH
CRAL
CRB
Transfer
Function
Designates source address
Designates destination address
Holds number of transfers
Designates transfer count
Not used
Rev. 2.0, 04/02, page 405 of 906
DAR
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