
9
White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
EDI416S4030A
June 2000 Rev. 0
CURRENT STATE TRUTH TABLE (cont.)
L
OP Code
Mode Register Set
ILLEGAL
L
H
X
Auto orSelf Refresh
ILLEGAL
L
H
L
X
Precharge
ILLEGAL
4
Write with
L
H
BA
Row Address
Bank Activate
ILLEGAL
4
Auto Precharge
L
H
L
BA
Column
Write
ILLEGAL
L
H
L
H
BA
Column
Read
ILLEGAL
L
H
L
X
Burst Termination
ILLEGAL
L
H
X
No Operation
Continue the Burst
H
X
Device Deselect
Continue the Burst
L
OP Code
Mode Register Set
ILLEGAL
L
H
X
Auto orSelf Refresh
ILLEGAL
L
H
L
X
Precharge
No Operation; Bank(s) idle after tRP
L
H
BA
Row Address
Bank Activate
ILLEGAL
4
Precharging
L
H
L
BA
Column
Write
ILLEGAL
4
L
H
L
H
BA
Column
Read
ILLEGAL
4
L
H
L
X
Burst Termination
No Operation; Bank(s) idle after tRP
L
H
X
No Operation
No Operation; Bank(s) idle after tRP
H
X
Device Deselect
No Operation; Bank(s) idle after tRP
L
OP Code
Mode Register Set
ILLEGAL
L
H
X
Auto orSelf Refresh
ILLEGAL
L
H
L
X
Precharge
ILLEGAL
4
L
H
BA
Row Address
Bank Activate
ILLEGAL
4,10
Row Activating
L
H
L
BA
Column
Write
ILLEGAL
4
L
H
L
H
BA
Column
Read
ILLEGAL
4
L
H
L
X
Burst Termination
No Operation; Row active after tRCD
L
H
X
No Operation
No Operation; Row active after tRCD
H
X
Device Deselect
No Operation; Row active after tRCD
L
OP Code
Mode Register Set
ILLEGAL
L
H
X
Auto orSelf Refresh
ILLEGAL
L
H
L
X
Precharge
ILLEGAL
4
L
H
BA
Row Address
Bank Activate
ILLEGAL
4
Write Recovering
L
H
L
BA
Column
Write
Start Write; Determine if Auto Precharge
9
L
H
L
H
BA
Column
Read
Start Read; Determine if Auto Precharge
9
L
H
L
X
Burst Termination
No Operation; Row active after tDPL
L
H
X
No Operation
No Operation; Row active after tDPL
H
X
Device Deselect
No Operation; Row active after tDPL
L
OP Code
Mode Register Set
ILLEGAL
L
H
X
Auto orSelf Refresh
ILLEGAL
L
H
L
X
Precharge
ILLEGAL
4
Write Recovering
L
H
BA
Row Address
Bank Activate
ILLEGAL
4
with Auto
L
H
L
BA
Column
Write
ILLEGAL
4,9
Precharge
L
H
L
H
BA
Column
Read
ILLEGAL
4,9
L
H
L
X
Burst Termination
No Operation; Precharge after tDPL
L
H
X
No Operation
No Operation; Precharge after tDPL
H
X
Device Deselect
No Operation; Precharge after tDPL
Current State
Command
Action
Notes
CE
RAS
CAS
WE
BA
A11,
Description
A10/AP-A0