EtronTech
EM68916CWQA
Figure 25.1. Burst write operation: RL=5 (AL=2, CL=3), WL=4, BL=4
T0
T1
T2
T3
T4
T5
T6
T7
Tn
CK#
CK
Posted CAS#
WRITE A
Precharge
NOP
NOP
NOP
NOP
tDQSS
NOP
tDSS tDQSS
NOP
NOP
CMD
Completion of the
Burst Write
Case 1: with tDQSS (max)
tDSS
DQS
WL = RL-1 =4
>=tWR
DQS#
DNA0 DNA1 DNA2 DNA3
DQs
Case 2: with tDQSS (min)
tDQSS tDSH
tDQSS tDSH
DQS
DQS#
>=tWR
WL = RL-1 =4
DNA0 DNA1 DNA2 DNA3
DQs
Figure 25.2. Burst write operation: RL=3 (AL=0, CL=3), WL=2, BL=4
T0
T1
T2
T3
T4
T5
Tm
Tm+1
Tn
CK#
CK
Bank A
Activate
Precharge
WRITE A
NOP
NOP
<=tDQSS
NOP
NOP
NOP
NOP
CMD
Completion of the
Burst Write
DQS
DQS#
WL = RL-1 =2
>=tWR
>=tRP
DNA0 DNA1 DNA2 DNA3
DQs
Etron Confidential
43
Rev. 1.1
Apr. 2009
ETRON [ ETRON TECHNOLOGY, INC. ]
