eorex
EM42BM3284LBA
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
TERM
NOP(Continue burst to end)
NOP(Continue burst to end)
ILLEGAL
BA/CA/A10
ILLEGAL (Note 1)
ILLEGAL (Note 1)
L
L
H
L
L
X
H
BA/RA
BA/A10
X
READ/WRITE
ACT
Read with
AP
H
ILLEGAL (Note 1)
ILLEGAL
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
TERM
NOP(Continue burst to end)
NOP(Continue burst to end)
ILLEGAL
ILLEGAL (Note 1)
ILLEGAL (Note 1)
L
L
H
L
L
X
H
BA/CA/A10 READ/WRITE
Write with AP
H
BA/RA
ACT
ILLEGAL (Note 1)
ILLEGAL
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
L
L
X
H
H
X
H
H
X
H
L
X
X
X
DESL
NOP
TERM
NOP(idle after tRP)
NOP(idle after tRP)
NOP
ILLEGAL (Note 1)
ILLEGAL (Note 1)
L
L
H
L
L
X
H
BA/CA/A10 READ/WRITE
Pre-charging
H
BA/RA
ACT
NOP(idle after tRP) (Note 3)
ILLEGAL
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
L
L
X
H
H
X
H
H
X
H
L
X
X
X
DESL
NOP
TERM
NOP(Row active after tRCD
NOP(Row active after tRCD
NOP
ILLEGAL (Note 1)
ILLEGAL (Note 1)
)
)
L
L
H
L
L
X
H
BA/CA/A10 READ/WRITE
Row
H
BA/RA
ACT
Activating
ILLEGAL (Note 1)
ILLEGAL
L
L
L
L
H
L
L
BA/A10
PRE/PREA
REFA
H
X
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
Feb. 2009
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