W9412G6JH Datasheet, PDF (20/53 Pages) Winbond – 2M  4 BANKS  16 BITS DDR SDRAM

W9412G6JH
Function Truth Table, continued
CURRENT
STATE ^CS
H
L
L
L
Write
L
Recovering
L
L
L
L
H
L
Write
L
Recovering L
with Auto-
precharge
L
L
L
L
L
H
L
L
Refreshing
L
L
L
H
L
Mode
Register
L
Accessing
L
RAS CAS WE ^ADDRESS
X X XX
H H HX
H H LX
H L H BA, CA, A10
H L L BA, CA, A10
L H H BA, RA
L H L BA, A10
L L HX
L L L Op-Code
X X XX
H H HX
H H LX
H L H BA, CA, A10
H L L BA, CA, A10
L H H BA, RA
L H L BA, A10
L L HX
L L L Op-Code
X X XX
H H HX
H H LX
H L HX
L H XX
L L XX
X X XX
H H HX
H H LX
H L XX
COMMAND
DSL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PREA
AREF/SELF
MRS/EMRS
DSL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PREA
AREF/SELF
MRS/EMRS
DSL
NOP
BST
READ/WRIT
ACT/PRE/PREA
AREF/SELF/MRS/EMRS
DSL
NOP
BST
READ/WRIT
ACTION
NOP->Row active after tWR
NOP->Row active after tWR
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP->Enter precharge after
tWR
NOP->Enter precharge after
tWR
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP->Idle after tRC
NOP->Idle after tRC
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP->Row after tMRD
NOP->Row after tMRD
ILLEGAL
ILLEGAL
NOTES
3
3
3
3
3
3
3
3
L L X XX
ACT/PRE/PREA/ARE
F/SELF/MRS/EMRS
ILLEGAL
Notes
1. All entries assume that CKE was active (High level) during the preceding clock cycle and the current clock cycle.
2. Illegal if any bank is not idle.
3. Illegal to bank in specified states; Function may be legal in the bank indicated by Bank Address (BA), depending on the
state of that bank.
4. Illegal if tRCD is not satisfied.
5. Illegal if tRAS is not satisfied.
6. Must satisfy burst interrupt condition.
7. Must avoid bus contention, bus turn around, and/or satisfy write recovery requirements.
8. Must mask preceding data which don’t satisfy tWR
Remark: H = High level, L = Low level, X = High or Low level (Don’t Care), V = Valid data
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Publication Release Date: Nov. 29, 2011
Revision A03