EM6A9320 Etron Technology Inc., EM6A9320 Datasheet - Page 12

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EM6A9320

Manufacturer Part Number
EM6A9320
Description
4M x 32 DDR SDRAM
Manufacturer
Etron Technology Inc.
Datasheet

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Et ronT ech
Timing Waveforms
Figure 1. AC Parameters for Read Timimg (Burst Length = 4)
Figure 2. AC Parameters for Write Timing (Burst Length=4)
CK#
CK
CMD
A0-11,
BA0-1
DQS
DM
DQ
Etron Confidential
CK#
CK
CMD
A0-11,
BA0-1
DQS
DQ
DQS
DQ
DQS
DQ
Valid
WR
t
WPRES
CAS Latency = 5
CAS Latency = 4
CAS Latency = 3
0
“Preamble”
Valid
t
RD
DS
t
DQSS
t
t
t
IS
IS
WPREH
t
t
t
CK
IH
IH
0
DQ0 DQ1 DQ2 DQ3
1
t
CH
1
t
CL
2
“Postmble”
t
HP
“Preamble”
t
2
t
WPST
DH
t
HP
3
4Mx32 DDR SDRAM
“Preamble”
DQ0 DQ1 DQ2 DQ3
3
Valid
WR
12
4
“Preamble”
t
DQSS
“Preamble”
DQ0 DQ1 DQ2 DQ3
4
t
t
RPRE
DQSQ
t
AC
DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7
“Postmble”
5
DQ0 DQ1 DQ2 DQ3
5
t
t
Valid
DQSCK
WR
DS
“Postmble”
6
t
DH
Rev 0.3
6
Input Data Masked
t
“Postmble”
QHS
t
RPST
7
EM6A9320
t
QH
t
DS
7
8
t
July. 2002
DH
“Postmble”
t
8
WPST

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