Datasheet

Table Of Contents
Section 7 DMA Controller (DMAC)
REJ09B0140-0900 Rev. 9.00 Page 185 of 846
Sep 16, 2010
H8S/2215 Group
Figure 7.11 illustrates operation in block transfer mode when MARB is designated as a block area.
Address T
A
Address B
A
Transfer
Address T
B
Note:
Address T
A
=
L
A
Address T
B
= L
B
Address B
A
= L
A
+
SAIDE · (–1)
SAID
· (2
DTSZ
· (M · N–1))
Address B
B
= L
B
+ DAIDE · (–1)
DAID
· (2
DTSZ
· (N–1))
L
A
= Value set in MARA
L
B
= Value set in MARB
N = Value set in ETCRA
M = Value set in ETCRAH and ETCRAL
Address B
B
1st block
2nd block
Nth block
Block area
Consecutive transfer
of M bytes or words
is performed in
rewponse to one
request
Figure 7.11 Operation in Block Transfer Mode (BLKDIR = 0)