11
1Gbit (32Mx32bit) Mobile SDR Memory
H55S1G(2/3)2MFP Series
CURRENT STATE TRUTH TABLE (Sheet 1 of 4)
Command
Current
Action
Notes
BA0/
BA1
State
CS RAS CAS WE
Amax-A0
Description
L
L
L
L
L
L
L
L
L
H
L
OP CODE
Mode Register Set
Set the Mode Register
14
5
X
X
X
Auto or Self Refresh Start Auto or Self Refresh
H
BA
Precharge
No Operation
Activate the specified
bank and row
L
L
L
H
L
H
L
BA
BA
Row Add.
Bank Activate
Col Add.
A10
Idle
H
Write/WriteAP
ILLEGAL
4
Col Add.
A10
L
L
H
H
X
L
H
X
H
H
X
BA
X
Read/ReadAP
ILLEGAL
4
3
3
X
X
No Operation
No Operation
No Operation or Power
Down
H
X
Device Deselect
Mode Register Set
L
L
L
L
L
L
L
L
L
L
L
H
L
OP CODE
ILLEGAL
13,14
X
X
X
Auto or Self Refresh ILLEGAL
13
7
H
H
BA
BA
Precharge
Precharge
ILLEGAL
H
Row Add.
Bank Activate
4
Row
Active
Col Add.
A10
Start Write : optional
AP(A10=H)
L
L
H
H
L
L
L
BA
BA
Write/WriteAP
Read/ReadAP
6
6
Col Add.
A10
Start Read : optional
AP(A10=H)
H
L
H
L
H
X
L
H
X
L
H
X
L
X
X
X
X
No Operation
No Operation
No Operation
ILLEGAL
Device Deselect
Mode Register Set
OP CODE
13,14
13
L
L
L
H
X
X
X
Auto or Self Refresh ILLEGAL
Termination Burst: Start
the Precharge
L
L
L
L
L
H
H
L
L
H
L
BA
BA
BA
Precharge
Row Add.
Bank Activate
Write/WriteAP
ILLEGAL
4
Read
Col Add.
A10
Termination Burst: Start
Write(optional AP)
H
8,9
Col Add.
A10
Termination Burst: Start
Read(optional AP)
L
L
H
H
L
H
H
BA
X
Read/ReadAP
No Operation
8
H
X
Continue the Burst
Rev 1.2 / Jun. 2008
18
HYNIX [ HYNIX SEMICONDUCTOR ]
