Figure 14.50 Single Address Mode/Burst Mode/External Device  External Bus Data Transfer/Direct Data Transfer Request To Channel 2 - Hitachi SH7751 Hardware Manual

Four requests can be queued
CKIO
1st 2nd 3rd 4th
A25–A0
D31–D0
RAS, CAS,
WE
ID1, ID0
Figure 14.50 Single Address Mode/Burst Mode/External Device
Rev. 3.0, 04/02, page 544 of 1064
5th
RA CA
D0
BA WT
Transfer/Direct Data Transfer Request to Channel 2
Handshaking is necessary
to send additional requests
CA
D1 D2 D3 D0 D2
D1
WT
CA CA
D3 D2
D0 D1 D3
WT WT
Must be ignored
(no request transmitted)


External Bus Data