Harman Kardon AVR 3600 Service Manual page 162

AVR3600
COMMAND TRUTH TABLE
COMMAND
Deselect
No Operation
Row Address Entry &
Bank Activate
Single Bank Precharge
Precharge All Banks
Column Address Entry
& Write
Column Address Entry
& Write with
Auto-Precharge
Column Address Entry
& Read
Column Address Entry
& Read with
Auto-Precharge
Auto-Refresh
Self-Refresh Entry
Self-Refresh Exit
Burst Terminate
Mode Register Set
H=High Level, L=Low Level, V=Valid, X=Don't Care, n=CLK cycle number
NOTE:
1. Applies only to read bursts with autoprecharge disabled; this command is undefined (and should not be used) for
read bursts with autoprecharge enabled, and for write bursts.
2. BA0-BA1 select either the Base or the Extended Mode Register (BA0 = 0, BA1 = 0 selects Mode Register;BA0=1 ,
BA1 = 0 selects Extended Mode Register; other combinations of BA0-BA1 are reserved; A0-A12 provide the
op-code to be written to the selected Mode Register.
CKE CKE
MNEMONIC
n-1 n
DESEL H X
NOP H X
ACT H H
PRE H H
PREA H H
WRITE H H
WRITEA H H
READ H H
READA H H
REFA H H
REFS H L
L H
REFSX
L H
TERM H H
MRS H H
256M Double Data Rate Synchronous DRAM
/CS /RAS /CAS /WE BA0,1
H X X
L H H
L L H
L L H
L L H
L H L
L H L
L H L
L H L
L L L
L L L
H X X
L H H
L H H
L L L
162
harman/kardon
A3S56D30ETP
A3S56D40ETP
A10 A0-9,
/AP 11-12
X X X X
H X X X
H V V V
L V L X
L X H X
L V L V
L V H V
H V L V
H V H V
H X X X
H X X X
X X X X
H X X X
L X X X
L L L V
note
1
2