CMS4A16LAx–75Ex
Table 10. Current State Bank n, Command to Bank n[57.58.59.60.61.62.]
.
Current State
CS#
RAS#
CAS#
WE#
Command(Action)
L
L
L
L
L
L
L
L
L
L
L
H
H
L
L
L
H
L
L
H
L
L
L
H
L
L
L
READ (Select column and start READ burst)[66.]
Row
WRITE (Select column and start WRITE burst)[66.]
PRECHARGE (Deactivate row in bank or banks)[64.]
READ (Select column and start new READ burst)[66.]
WRITE (Select column and start WRITE burst)[66.]
PRECHARGE (Truncate READ burst, start RECHARGE)[64.]
BURST TERMINATE[65.]
Active
H
L
H
H
L
Read(Auto
Precharge
Disabled)
L
H
H
L
H
H
H
L
READ (Select column and start READ burst)[66.]
WRITE (Select column and start new WRITE burst)[66.]
PRECHARGE (Truncate WRITE burst, start PRECHARGE)[64.]
BURST TERMINATE[65.]
Write
(Auto
L
Precharge
Disabled)
H
H
H
Table 11. Current State Bank n, Command to Bank m[68.69.70.71.72.73.]
.
Current State
CS#
RAS#
CAS#
WE#
Command(Action)
H
L
X
L
L
L
L
L
L
L
L
L
L
L
L
X
H
X
L
X
H
X
H
L
X
H
X
H
H
L
COMMAND INHIBIT (NOP/Continue previous operation)
NO OPERATION (NOP/Continue previous operation)
Any Command Otherwise Allowed to Bank m
ACTIVE (Select and activate row)
Any
Idle
Row Activating,
Active, or
H
H
L
READ (Select column and start READ burst)[74.]
WRITE (Select column and start WRITE burst)[74.]
PRECHARGE
L
Precharging
H
H
L
L
L
H
H
L
ACTIVE (Select and activate row)
Read(Auto
Precharge
Disabled)
H
H
L
READ (Select column and start new READ burst)[74.78.]
WRITE (Select column and start WRITE burst)[74.79.]
PRECHARGE[76.]
L
H
H
L
L
L
H
H
L
ACTIVE (Select and activate row)
Write(Auto
Precharge
Disabled)
H
H
L
READ (Select column and start READ burst)[74.79.]
WRITE (Select column and start new WRITE burst)[76.80.]
PRECHARGE[76.]
L
H
L
44
Rev. 0.5, May. ‘07
FIDELIX [ FIDELIX ]
