w9425g6dh Winbond Electronics Corp America, w9425g6dh Datasheet - Page 20

• Manufacturer Part Number: w9425g6dh
• Description: 4m X 4 Banks X 16 Bits Ddr Sdram
• Manufacturer: Winbond Electronics Corp America

Function Truth Table, continued
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 (BS), depending on the
4. Illegal if t
5. Illegal if t
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 t
Remark: H = High level, L = Low level, X = High or Low level (Don’t care), V = Valid data
Write
Recovering
Write
Recovering
with Auto-
precharge
Refreshing
Mode
Register
Accessing
CURRENT
STATE
state of that bank.
RCD
RAS
CS
is not satisfied.
is not satisfied.
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
RAS
X
H
H
H
H
X
H
H
H
H
X
H
H
H
X
H
H
H
L
L
L
L
L
L
L
L
L
L
L
CAS
X
H
H
H
H
X
H
H
H
H
X
H
H
H
X
H
H
X
L
L
L
L
L
L
L
L
L
L
L
WE
H
H
H
H
H
H
H
H
H
H
H
X
L
L
L
L
X
L
L
L
L
X
L
X
X
X
L
X
X
X
X
X
BS, CA, A10
BS, CA, A10
BS, RA
BS, A10
X
Op-Code
X
X
X
BS, CA, A10
BS, CA, A10
BS, RA
BS, A10
X
Op-Code
X
X
X
X
X
X
X
X
X
X
X
ADDRESS
WR
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
ACT/PRE/PREA/ARE
F/SELF/MRS/EMRS
- 20 -
COMMAND
Publication Release Date:Feb. 12, 2008
NOP->Row active after t
NOP->Row active after t
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP->Enter precharge after t
NOP->Enter precharge after t
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP->Idle after t
NOP->Idle after t
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP->Row after t
NOP->Row after t
ILLEGAL
ILLEGAL
ILLEGAL
ACTION
W9425G6DH
RC
RC
MRD
MRD
WR
WR
Revision A8
WR
WR
NOTES
3
3
3
3
3
3
3
3