Hitachi SH7750 series Hardware Manual page 507

Superh risc engine
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Four requests can be queued
CLK
4th
1st
2nd
3rd
DBREQ
BAVL
TR
A25–A0
D63–D0
RAS,
CAS, WE
TDACK
ID1, ID0
Figure 14.48 Single Address Mode/Burst Mode/External Bus → → → → External Device Data
Rev. 4.0, 04/00, page 496 of 850
RA
CA
BA
RD
Transfer/Direct Data Transfer Request to Channel 2
Handshaking is necessary
to send additional requests
5th
CA
D0
D1
D2
D3
D0
RD
Must be ignored
(no request transmitted)
No more requests
CA
D1 D2
D3
D0
D1
RD
NOP
D2

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