IBM11S4325HP IBM11S2325HP
IBM11S4325HM IBM11S2325HM
2M/4M x 32 SO DIMM Module
Truth Table
Row
Address
Column
Address
Function
RAS
CAS
WE
All DQ bits
Standby
Read
H
L
L
X
L
L
X
H
L
X
X
High Impedance
Valid Data Out
Valid Data In
Row
Row
Col
Col
Early-Write
Fast Page Mode - Read:
1st Cycle
H→L
H→L
H→L
L
L
L
H
H
L
Row
N/A
Col
Col
Col
Valid Data Out
Valid Data Out
Valid Data In
Subsequent Cycles
Fast Page Mode - Write:
1st Cycle
Row
H→L
Subsequent Cycles
RAS-Only Refresh
L
L
X
H
H
H
H
N/A
Row
X
Col
N/A
X
Valid Data In
High Impedance
High Impedance
Data Out
L
H
L
L
L
L
H→L
L→H→L
L→H→L
H→L
CAS-Before-RAS Refresh
Read
Row
Row
X
Col
Col
X
Hidden Refresh
Write
Data In
Self Refresh
High Impedance
Presence Detect
2M x 32
4M x 32
Pin
-60 / 6R
-70
-60 / 6R
-70
VSS
NC
VSS
NC
VSS
NC
VSS
NC
PD1
PD2
PD3
PD4
PD5
PD6
PD7
VSS
VSS
VSS
VSS
VSS
VSS
VSS
NC
NC
NC
NC
VSS
NC
VSS
NC
VSS
NC
NC
VSS
VSS
1. NC= OPEN, V = GND
ss
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Use is further subject to the provisions at the end of this document.
75H1718
SA14-4471-00
Revised 4/96
Page 4 of 21
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