Harman Kardon AVR 245, Service Manual

Page: 109 / 228

HY57V161610E
Rev. 0.2 / Aug. 2003 12
COMMAND TRUTH TABLE
Note :
1. Exiting Self Refresh occurs by asynchronously bringing CKE from low to high.
2. X=Do not care, L=Low, H=High, BA=Bank Address, RA= Row Address, CA=Column Address, Opcode=Operand Code,
NOP=No Operation.
Command CKEn-1 CKEn CS RAS CAS WE DQM A0~A9
A10/
AP
BA Note
Mode Register Set H X L L L L X OP code
No Operation H X
H X X X
X X
L H H H
Bank Active H X L L H H X Row Address V
Read
H X L H L H X
Column
Address
L
V
Read with Auto precharge H
Write
H X L H L L X
Column
Address
L
V
Write with Auto precharge H
Precharge All Bank
H X L L H L X X
H X
Precharge selected Bank L V
Burst Stop H X L H H L X X
U/LDQM H X V X
Auto Refresh H H L L L H X X
Burst-READ-Single-WRITE H X L L L L X
A9 Pin High
(Other Pins OP code)
Self Refresh
1
Entry H L L L L H X
X
Exit L H
H X X X
X
L H H H
Precharge power
down
Entry H L
H X X X
X
X
L H H H
Exit L H
H X X X
X
L H H H
Clock Suspend
Entry H L
H X X X
X
X L V V V
Exit L H X X
109
AVR245
harman/kardon