Datasheet

Section 8 EXDMA Controller (EXDMAC)
Page 422 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Bit Bit Name Initial Value R/W Description
4
3
2
1
0
DARA4
DARA3
DARA2
DARA1
DARA0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
Destination Address Repeat Area
These bits specify the destination address
(EDDAR) repeat area. The repeat area function
updates the specified lower address bits, leaving
the remaining upper address bits always the
same. A repeat area size of 2 bytes to 8 Mbytes
can be specified. The setting interval is a power-
of-two number of bytes. When repeat area
overflow results from incrementing or
decrementing an address, the lower address is the
start address of the repeat area in the case of
address incrementing, or the last address of the
repeat area in the case of address decrementing.
If the DARIE bit is set to 1, an interrupt can be
requested when repeat area overflow occurs.
00000: Not designated as repeat area
00001: Lower 1 bit (2-byte area) designated as
repeat area
00010: Lower 2 bits (4-byte area) designated as
repeat area
00011: Lower 3 bits (8-byte area) designated as
repeat area
00100: Lower 4 bits (16-byte area) designated as
repeat area
: :
10011: Lower 19 bits (512-Kbyte area) designated
as repeat area
10100: Lower 20 bits (1-Mbyte area) designated
as repeat area
10101: Lower 21 bits (2-Mbyte area) designated
as repeat area
10110: Lower 22 bits (4-Mbyte area) designated
as repeat area
10111: Lower 23 bits (8-Mbyte area) designated
as repeat area
11xxx: Setting prohibited
[Legend]
x: Don't care