Datasheet

Section 8 EXDMA Controller
Rev. 3.00 Mar 17, 2006 page 349 of 926
REJ09B0283-0300
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