EtronTech
EM68916CWQA
Figure 30.3. Burst read operation followed by precharge:
(RL=5, AL=2, CL=3, BL=4, tRTP≦2 clocks)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CK#
CK
Bank A
Activate
Post CAS#
READ A
Precharge A
NOP
AL + BL/2 clks
NOP
NOP
NOP
NOP
NOP
CMD
DQS
AL = 2
CL = 3
DQS#
>=tRP
RL= 5
DOUT DOUT DOUT DOUT
DQ's
A0
A1
A2
A3
>=tRAS
CL = 3
>=tRTP
Figure 30.4. Burst read operation followed by precharge:
(RL=6, AL=2, CL=4, BL=4, tRTP≦2 clocks)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CK#
CK
Bank A
Activate
Post CAS#
READ A
Precharge A
NOP
AL + BL/2 clks
NOP
NOP
NOP
NOP
NOP
CMD
DQS
AL = 2
CL = 4
DQS#
>=tRP
RL= 6
DOUT DOUT DOUT DOUT
A0 A1 A2 A3
DQ's
>=tRAS
CL = 4
>=tRTP
Etron Confidential
48
Rev. 1.1
Apr. 2009
ETRON [ ETRON TECHNOLOGY, INC. ]
