EM42CM1684RTA
3. Operative Command Table (Continued)
Current
State
/CS /R /C /W
Addr.
Command
Action
H
L
L
L
L
X
H
H
H
L
X
H
H
L
X
H
L
X
X
DESL
NOP
NOP(Continue burst to end)
NOP(Continue burst to end)
BA/CA/A10 TERM
ILLEGAL
Read with AP
ILLEGAL (Note 1)
X
H
BA/RA
BA/A10
X
READ/WRITE
ILLEGAL (Note 1)
ILLEGAL (Note 1)
ILLEGAL
H
ACT
L
L
L
L
H
L
L
PRE/PREA
REFA
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(Continue burst to end)
NOP(Continue burst to end)
ILLEGAL
TERM
ILLEGAL (Note 1)
L
L
H
L
L
X
H
BA/CA/A10 READ/WRITE
ILLEGAL (Note 1)
ILLEGAL (Note 1)
ILLEGAL
Write with AP
H
BA/RA
ACT
L
L
L
L
H
L
L
BA/A10
PRE/PREA
REFA
H
X
Op-Code,
Mode-Add
L
L
L
L
MRS
ILLEGAL
NOP(idle after tRP)
NOP(idle after tRP)
NOP
H
L
L
X
H
H
X
H
H
X
H
L
X
X
X
DESL
NOP
TERM
ILLEGAL (Note 1)
L
L
H
L
L
X
H
BA/CA/A10 READ/WRITE
Pre-charging
ILLEGAL (Note 1)
NOP(idle after tRP) (Note 3)
ILLEGAL
H
BA/RA
ACT
L
L
L
L
H
L
L
BA/A10
PRE/PREA
REFA
H
X
Op-Code,
Mode-Add
L
L
L
L
MRS
ILLEGAL
NOP(Row active after tRCD)
NOP(Row active after tRCD)
NOP
H
L
L
X
H
H
X
H
H
X
H
L
X
X
X
DESL
NOP
TERM
ILLEGAL (Note 1)
L
L
H
L
L
X
H
BA/CA/A10 READ/WRITE
Row
Activating
ILLEGAL (Note 1)
ILLEGAL (Note 1)
ILLEGAL
H
BA/RA
ACT
L
L
L
L
H
L
L
BA/A10
PRE/PREA
REFA
H
X
Op-Code,
Mode-Add
L
L
L
L
MRS
ILLEGAL
H = High level, L = Low level, X = High or Low level (Don't care), AP = Auto Pre-charge
Jan. 2012
www.eorex.com
14/22
EOREX [ EOREX CORPORATION ]
