eorex
EM42BM1684RTA
3. Operative Command Table (Continued)
Current
State
/CS /R /C /W
Addr.
Command
Action
H
L
L
X
H
H
X
H
H
X
H
L
X
X
DESL
NOP
NOP(Continue burst to end)
NOP(Continue burst to end)
ILLEGAL
BA/CA/A10
TERM
(Note 1)
L
L
H
L
L
X
H
BA/RA
BA/A10
X
READ/WRITE
ACT
ILLEGAL
Read with
AP
(Note 1)
H
ILLEGAL
(Note 1)
L
L
L
L
H
L
L
PRE/PREA
REFA
ILLEGAL
H
X
Op-Code,
Mode-Add
ILLEGAL
L
L
L
L
MRS
ILLEGAL
H
L
L
X
H
H
X
H
H
X
H
L
X
X
X
DESL
NOP
NOP(Continue burst to end)
NOP(Continue burst to end)
ILLEGAL
TERM
(Note 1)
L
L
H
L
L
X
H
BA/CA/A10 READ/WRITE
ILLEGAL
(Note 1)
Write with AP
H
BA/RA
ACT
ILLEGAL
(Note 1)
L
L
L
L
H
L
L
BA/A10
PRE/PREA
REFA
ILLEGAL
H
X
Op-Code,
Mode-Add
ILLEGAL
L
L
L
L
MRS
ILLEGAL
H
L
L
X
H
H
X
H
H
X
H
L
X
X
X
DESL
NOP
NOP(idle after tRP
NOP(idle after tRP
NOP
)
)
TERM
(Note 1)
L
L
H
L
L
X
H
BA/CA/A10 READ/WRITE
ILLEGAL
(Note 1)
Pre-charging
H
BA/RA
ACT
ILLEGAL
(Note 3)
L
L
L
L
H
L
L
BA/A10
PRE/PREA
REFA
NOP(idle after tRP)
ILLEGAL
H
X
Op-Code,
Mode-Add
L
L
L
L
MRS
ILLEGAL
H
L
L
X
H
H
X
H
H
X
H
L
X
X
X
DESL
NOP
NOP(Row active after tRCD
NOP(Row active after tRCD
NOP
)
)
TERM
(Note 1)
L
L
H
L
L
X
H
BA/CA/A10 READ/WRITE
ILLEGAL
Row
Activating
(Note 1)
H
BA/RA
ACT
ILLEGAL
(Note 1)
L
L
L
L
H
L
L
BA/A10
PRE/PREA
REFA
ILLEGAL
H
X
ILLEGAL
Op-Code,
Mode-Add
L
L
L
L
MRS
ILLEGAL
Remark H = High level, L = Low level, X = High or Low level (Don't care), AP = Auto Pre-charge
Jul. 2006
www.eorex.com
12/19
EOREX [ EOREX CORPORATION ]
