Harman Kardon DVD 27, Service Manual

Page: 63 / 110

ESMT
M12L64164A
Elite Semiconductor Memory Technology Inc.
Publication Date : Mar. 2003
Revision : 1.7 26/44
Current
State
CS RAS CAS WE
BA ADDR ACTION Note
H X X X X X NOP Idle after tRP
Read with L H H H X X NOP Idle after tRP
Auto L H H L X X ILLEGAL 2
Precharge L H L X BA CA ILLEGAL 2
L L H H BA RA ILLEGAL 2
L L H L BA A10/AP NOP Idle after tRPL 4
L L L X X X ILLEGAL
H X X X X X NOP Row Active after tRCD
L H H H X X NOP Row Active after tRCD
Row L H H L X X ILLEGAL 2
Activating L H L X BA CA ILLEGAL 2
L L H H BA RA ILLEGAL 2
L L H L BA A10/AP ILLEGAL 2
L L L X X X ILLEGAL
H X X X X X NOP Idle after tRFC
L H H X X X NOP Idle after tRFC
Refreshing L H L X X X ILLEGAL
L L H X X X ILLEGAL
L L L X X X ILLEGAL
H X X X X X NOP Idle after 2clocks
Mode L H H H X X NOP Idle after 2clocks
Register L H H L X X ILLEGAL
Accessing L H L X X X ILLEGAL
L L X X X X ILLEGAL
Abbreviations : RA = Row Address BA = Bank Address
NOP = No Operation Command CA = Column Address AP = Auto Precharge
*Note : 1. All entries assume the CKE was active (High) during the precharge clock 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 the
bnak.
3. Must satisfy bus contention, bus turn around, and/or write recovery requirements.
4. NOP to bank precharge or in idle state. May precharge bank indicated by BA (and A10/AP).
5. Illegal if any bank is not idle.
DVD27 harman/kardon
63