HD6417751RBP240V Datasheet, PDF (676/1226 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

14. Direct Memory Access Controller (DMAC)
Four requests can be queued
CKIO
1st 2nd 3rd 4th
DBREQ
BAVL
TR
A25–A0
D31–D0
RAS, CAS,
WE
TDACK
ID1, ID0
RA
CA
BA
RD
Handshaking is necessary
to send additional requests
5th
No more requests
CA
CA
CA
D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2
RD
RD
RD
Must be ignored
(no request transmitted)
Figure 14.49 Single Address Mode/Burst Mode/External Bus → External Device Data
Transfer/Direct Data Transfer Request to Channel 2
Rev.4.00 Oct. 10, 2008 Page 576 of 1122
REJ09B0370-0400