eorex
EM488M1644VTE
4. Operative Command Table (Continued) (Note 7)
Current
State
/CS /R /C /W
Addr.
X
Command
Action
Continue burst to end →
Pre-charging
Continue burst to end →
Pre-charging
H
L
X
H
X
H
X
H
DESL
X
X
NOP
BST
L
L
H
H
H
L
L
ILLEGAL
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL (Note 9)
Read with
AP
H
BA/CA/A10 READ/READA
BA/CA/A10 WRIT/WRITA
L
L
L
H
L
L
L
H
H
L
H
L
BA/RA
ACT
BA, A10
PRE/PALL
L
L
L
L
L
L
H
L
X
REF/SELF
MRS
ILLEGAL
ILLEGAL
Op-Code
Burst to end → Write recovering
with auto pre-charge
Continue burst to end → Write
recovering with auto pre-charge
ILLEGAL
H
L
X
H
X
H
X
H
X
DESL
X
X
NOP
BST
L
L
H
H
H
L
L
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL (Note 9)
Write with
AP
H
BA/CA/A10 READ/READA
BA/CA/A10 WRIT/WRITA
L
L
L
H
L
L
L
H
H
L
H
L
BA/RA
ACT
ILLEGAL (Note 9)
BA, A10
PRE/PALL
L
L
H
L
L
L
L
X
H
H
L
L
X
H
H
H
L
X
H
L
X
REF/SELF
MRS
ILLEGAL
ILLEGAL
Op-Code
X
X
X
DESL
NOP
BST
Nop → Enter idle after tRP
Nop → Enter idle after tRP
ILLEGAL
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL (Note 9)
L
L
L
H
H
L
L
L
H
L
BA/CA/A10 READ/READA
BA/CA/A10 WRIT/WRITA
Pre-charging
H
H
BA/RA
ACT
L
L
L
H
L
L
L
L
L
X
H
H
H
L
L
X
H
H
L
H
L
X
H
L
BA, A10
PRE/PALL
REF/SELF
MRS
Nop → Enter idle after tRP
ILLEGAL
ILLEGAL
Nop → Enter idle after tRCD
Nop → Enter idle after tRCD
ILLEGAL
X
Op-Code
X
X
X
DESL
NOP
BST
ILLEGAL (Note 9)
ILLEGAL (Note 9)
ILLEGAL (Note 9, 16)
L
L
L
L
H
H
L
L
L
H
L
BA/CA/A10 READ/READA
BA/CA/A10 WRIT/WRITA
Row
Activating
H
H
H
L
BA/RA
ACT
ILLEGAL (Note 9)
L
BA, A10
PRE/PALL
L
L
L
L
L
L
H
L
X
REF/SELF
MRS
ILLEGAL
ILLEGAL
Op-Code
Remark H = High level, L = Low level, X = High or Low level (Don't care), AP = Auto Pre-charge
Dec. 2007
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