D12320VF25IV Datasheet, PDF (307/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 7 DMA Controller (Not Supported in the H8S/2321)
Address T_A
1st block
2nd block
Transfer
Consecutive transfer
of M bytes or words
is performed in
response to one
request
Block area
Address T_B
Address B_B
Address B_A
Nth block
Legend:
Address TA = LA
Address TB = LB
Address BA = LA + SAIDE · (–1)^SAID · (2^DTSZ · (M·N–1))
Address BB = LB + DAIDE · (–1)^DAID · (2^DTSZ · (N–1))
Where : LA = Value set in MARA
LB = Value set in MARB
N = Value set in ETCRB
M = Value set in ETCRAH and ETCRAL
Figure 7.13 Operation in Block Transfer Mode (BLKDIR = 0)
Figure 7.14 illustrates operation in block transfer mode when MARA is designated as a block area.
Rev.6.00 Sep. 27, 2007 Page 275 of 1268
REJ09B0220-0600