h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 211
h8s-2161b
Manufacturer Part Number
h8s-2161b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2161B.pdf
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7.5.2
In repeat mode, one activation source transfers one byte or one word of data. Table 7.3 lists the
register functions in repeat mode. From 1 to 256 transfers can be specified. Once the specified
number of transfers have completed, the initial states of the transfer counter and the address
register that is 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
the DISEL bit in MRB is cleared to 0.
Table 7.3
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
DAR
or
Repeat Mode
Register Functions in Repeat Mode
Figure 7.6 Memory Mapping in Repeat Mode
Repeat area
SAR
Abbreviation
DAR
CRAH
CRAL
CRB
Transfer
Section 7 Data Transfer Controller (DTC)
Rev. 3.00 Mar 21, 2006 page 157 of 788
Function
Transfer source address
Transfer destination address
Holds number of transfers
Transfer Count
Not used
REJ09B0300-0300
DAR
SAR
or
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