r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 508

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 9 Data Transfer Controller (DTC)
9.5.3
In block transfer mode, one operation transfers one block of data. Either the transfer source or the
transfer destination is designated as a block area. Table 9.6 lists the register function in block
transfer mode. The block size is 1 to 256. When the transfer of one block ends, the initial state of
the block size counter and the address register specified as the block area is restored. The other
address register is then incremented, decremented, or left fixed. From 1 to 65,536 transfers can be
specified. Once the specified number of transfers has ended, a CPU interrupt is requested.
Table 9.6
Rev. 1.00 Sep. 19, 2008 Page 480 of 1270
REJ09B0466-0100
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
Block Transfer Mode
Register Function in Block Transfer Mode
Figure 9.8 Memory Mapping in Block Transfer Mode
Nth block
First block
Abbreviation
SAR
DAR
CRAH
CRAL
CRB
Transfer
Block area
Designates source address
Designates destination address
Holds block size
Designates block size count
Designates transfer count
Function
DAR
or
SAR