Harman Kardon AVR 3600 Service Manual page 166

AVR3600
FUNCTION TRUTH TABLE (continued)
Current State /CS /RAS /CAS /WE Address
REFRESHING H
L
L
L
L
L
L
L
H
MODE
REGISTER L
SETTING
L
L
L
L
L
L
ABBREVIATIONS:
H=High Level, L=Low Level, X=Don't Care
BA=Bank Address, RA=Row Address, CA=Column Address, NOP=No Operation
NOTES:
1. All entries assume that CKE was High during the preceding clock cycle and the current clock cycle.
2. ILLEGAL to bank in specified state; function may be legal in the bank indicated by BA, depending on the state of
that bank.
3. Must satisfy bus contention, bus turn around, write recovery requirements.
4. NOP to bank precharging or in idle state. May precharge bank indicated by BA.
5. ILLEGAL if any bank is not idle.
ILLEGAL = Device operation and/or data-integrity are not guaranteed.
X X X X
H H H X
H H L BA
H L X BA, CA, A10
L H H BA, RA
L H L BA, A10
L L H X
Op-Code, Mode-
L L L
Add
X X X X
H H H X
H H L BA
H L X BA, CA, A10
L H H BA, RA
L H L BA, A10
L L H X
Op-Code, Mode-
L L L
Add
256M Double Data Rate Synchronous DRAM
Command Action
DESEL NOP (Idle after tRC)
NOP NOP (Idle after tRC)
TERM ILLEGAL
READ / WRITE ILLEGAL
ACT ILLEGAL
PRE / PREA ILLEGAL
REFA ILLEGAL
MRS ILLEGAL
DESEL NOP (Row Active after tRSC)
NOP NOP (Row Active after tRSC)
TERM ILLEGAL
READ / WRITE ILLEGAL
ACT ILLEGAL
PRE / PREA ILLEGAL
REFA ILLEGAL
MRS ILLEGAL
166
harman/kardon
A3S56D30ETP
A3S56D40ETP
Notes