Datasheet

Section 11 Data Transfer Controller (DTC)
Page 356 of 982 REJ09B0465-0300 Rev. 3.00
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
SAR DAR
Transfer
Figure 11.6 Memory Mapping in Normal Mode
11.5.2 Repeat Mode
In repeat mode, one operation transfers one byte or one word of data. Table 11.6 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, therefore CPU interrupts cannot be requested when DISEL = 0.
Table 11.6 Register Function in Repeat Mode
Name Abbreviation Function
DTC source address register SAR Designates transfer source address
DTC destination address register DAR Designates transfer destination address
DTC transfer count register AH CRAH Holds number of transfers
DTC transfer count register AL CRAL Designates transfer count
DTC transfer count register B CRB Not used