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W9712G6JB Datasheet, PDF (33/86 Pages) Winbond – 2M × 4 BANKS × 16 BIT DDR2 SDRAM
W9712G6JB
8.4 Function Truth Table
CURRENT
STATE
CS
RAS CAS WE
ADDRESS
COMMAND
H
X
X
X
X
DSL
L
H
H
H
X
NOP
L
H
L
H BA, CA, A10 READ/READA
L
H
L
L BA, CA, A10 WRIT/WRITA
Idle
L
L
H
H BA, RA
ACT
L
L
H
L BA, A10
PRE/PREA
L
L
L
H
X
AREF/SELF
L
L
L
L Op-Code
MRS/EMRS
Banks
Active
Read
Write
H
X
X
X
X
DSL
L
H
H
H
X
NOP
L
H
L
H BA, CA, A10 READ/READA
L
H
L
L BA, CA, A10 WRIT/WRITA
L
L
H
H BA, RA
ACT
L
L
H
L BA, A10
PRE/PREA
L
L
L
H
X
AREF/SELF
L
L
L
L Op-Code
MRS/EMRS
H
X
X
X
X
DSL
L
H
H
H
X
NOP
L
H
L
H BA, CA, A10 READ/READA
L
H
L
L BA, CA, A10 WRIT/WRITA
L
L
H
H BA, RA
ACT
L
L
H
L BA, A10
PRE/PREA
L
L
L
H
X
AREF/SELF
L
L
L
L Op-Code
MRS/EMRS
H
X
X
X
X
DSL
L
H
H
H
X
NOP
L
H
L
H BA, CA, A10 READ/READA
L
H
L
L BA, CA, A10 WRIT/WRITA
L
L
H
H BA, RA
ACT
L
L
H
L BA, A10
PRE/PREA
L
L
L
H
X
AREF/SELF
L
L
L
L Op-Code
MRS/EMRS
ACTION
NOP or Power down
NOP or Power down
ILLEGAL
ILLEGAL
Row activating
Precharge/ Precharge all banks
Auto Refresh or Self Refresh
Mode/Extended register
accessing
NOP
NOP
Begin read
Begin write
ILLEGAL
Precharge/ Precharge all banks
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
Burst interrupt
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
ILLEGAL
Burst interrupt
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOTES
1
1
2
2
1
1,3
1
1
1
1
1,3
1
1
- 33 -
Publication Release Date: Mar. 15, 2010
Revision A01