Four requests can be queued
CLK
2nd
4th
1st
3rd
A25–A0
D63–D0
RAS,
CAS, WE
ID1, ID0
Figure 14.51 Single Address Mode/Burst Mode/External Bus → → → → External Device Data
Transfer (Active Bank Address)/Direct Data Transfer Request to Channel 2
Rev. 6.0, 07/02, page 570 of 986
5th
CA
CA
D2
D0
D1
RD
RD
Handshaking is necessary
to send additional requests
CA
D2
D3
D0
D1
D3
RD
Must be ignored
(no request transmitted)
CA
D0
D2
D1
RD