EM639165
FUNCTION TRUTH TABLE (continued)
Current State /CS /RAS /CAS /WE Address
Command Action
H
X
X
X
X
DESEL
READ
NOP (Continue Burst to END)
L
L
L
H
H
H
H
H
L
H
L
X
NOP
NOP (Continue Burst to END)
Terminate Burst
TBST
BA
READ
/READA
WRITE /
WRITEA
Terminate Burst, Latch CA,Begin
Read, Determine Auto-Precharge*3
H
BA, CA, A10
Terminate Burst, Latch CA,Begin
Write, Determine Auto-Precharge*3
L
L
H
L
L
L
BA, CA, A10
BA, RA
H
H
ACT
Bank Active / ILLEGAL*2
PRE /
PREA
L
L
L
L
L
L
H
L
L
L
H
L
BA, A10
X
Terminate Burst, Precharge
ILLEGAL
REFA
MRS
Op-Code,
ILLEGAL
Mode-Add
WRITE
H
L
X
H
X
H
X
H
X
X
DESEL
NOP
NOP (Continue Burst to END)
NOP (Continue Burst to END)
L
L
L
H
H
H
H
L
L
L
H
L
TBST
Terminate Burst, Latch CA,Begin
Terminate Burst, Latch CA,Begin
BA
READ /
BA, CA, A10
BA, CA, A10
READA Read, Determine Auto-Precharge*3
WRITE / Terminate Burst, Latch CA,Begin
WRITEA Write, Determine Auto-Precharge*3
L
L
L
L
L
L
L
L
H
H
L
L
H
L
H
L
BA, RA
BA, A10
X
ACT
Bank Active / ILLEGAL*2
Terminate Burst, Precharge
ILLEGAL
PRE /
PREA
REFA
MRS
Op-Code,
ILLEGAL
Mode-Add
Preliminary
Rev 1.0 Feb. 2001
7
ETRON [ ETRON TECHNOLOGY, INC. ]
