EM639165
BURST INTERRUPTION [ Read Interrupted by Read ]
Burstreadoperationcanbeinterrupted bynewreadofanybank. RandomcolumnaccessisallowedREADtoREADinterval
isminimum1CLK..
Read Interrupted by Read (BL=4, CL=3)
CLK
READ READ
READ
Yk
READ
Yl
Command
A0-9
Yi
0
Yj
0
0
0
A10
A11
00
00
10
01
BA0,1
DQ
Qai0 Qaj0 Qaj1 Qbk0 Qbk1 Qbk2 Qal0 Qal1 Qal2 Qal3
[ Read Interrupted by Write ]
Burst read operation can be interrupted by write of any bank. Random column access is allowed. In this case, the DQ
should be controlled adequately by using the DQM to prevent the bus contention. The output is disabled automatically 1
cycle after WRITE assertion.
Read Interrupted by Write (BL=4, CL=3)
CLK
READ
Yi
Write
Yj
Command
A0-9
0
0
A10
A11
00
00
BA0,1
DQM
Qai0
Q
D
Daj0 Daj1 Daj2 Daj3
DQM control Write control
Preliminary
Rev 1.0 Feb. 2001
18
ETRON [ ETRON TECHNOLOGY, INC. ]
