ep9302 Cirrus Logic, Inc., ep9302 Datasheet - Page 20

• Manufacturer Part Number: ep9302
• Description: High-speed Arm9 System-on-chip Processor With Maverickcrunch
• Manufacturer: Cirrus Logic, Inc.

EP9302
High-speed ARM9 System-on-chip Processor with MaverickCrunch
Static Memory 32-bit Read on 16-bit External Bus
20
AD setup to CSn assert time
CSn assert to AD transition time
AD transition to CSn deassert time
AD hold from CSn deassert time
RDn assert time
CSn to RDn delay time
CSn assert to DQMn assert delay time
DA setup to AD transition time
DA to RDn deassert time
DA hold from AD transition time
DA hold from RDn deassert time
WAIT
DQMn
WRn
RDn
CSn
DA
AD
t
ADs
Parameter
t
RDd
Figure 8. Static Memory Multiple Word Read 16-bit Cycle Timing Measurement
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Copyright 2005 Cirrus Logic (All Rights Reserved)
t
DQMd
Symbol
t
t
RDpwL
t
t
t
t
t
t
DQMd
t
t
ADd1
ADd2
t
DAh1
DAh2
DAs1
DAs2
ADh
RDd
ADs
t
ADd1
t
RDpwl
t
DAs1
t
HCLK
t
t
Min
HCLK
HCLK
15
0
0
-
-
-
-
-
+ 12
t
HCLK
t
DAh1
t
t
HCLK
HCLK
× ((2 × WST1) + 3)
× (WST1 + 1)
× (WST1 + 2)
Typ
t
DAs2
-
-
-
-
-
-
-
-
t
ADd2
t
DQMh
Max
3
1
-
-
-
-
-
-
-
-
-
t
RDh
t
DAh2
t
DS653PP3
ADh
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns