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EP9315 Scheda tecnica(PDF) 21 Page - Cirrus Logic

Il numero della parte EP9315
Spiegazioni elettronici  Enhanced Universal Platform System-on-Chip Processor
PDF  64 Pages
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Produttore elettronici  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

EP9315 Scheda tecnica(HTML) 21 Page - Cirrus Logic

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21
EP9315
Enhanced Universal Platform SOC Processor
Static Memory 32-bit Read on 8-bit External Bus
Parameter
Symbol
Min
Typ
Max
Unit
AD setup to CSn assert time
tADs
tHCLK
-
-ns
CSn assert to Address transition time
tAD1
-
tHCLK × (WST1 + 1)
-ns
Address assert time
tAD2
-
tHCLK × (WST1 + 1)
-ns
AD transition to CSn deassert time
tAD3
-
tHCLK × (WST1 + 2)
-ns
AD hold from CSn deassert time
tADh
tHCLK
--
ns
RDn assert time
tRDpwL
-
tHCLK × (4 × WST1 + 5)
-ns
CSn to RDn delay time
tRDd
--
3
ns
CSn assert to DQMn assert delay time
tDQMd
--
1
ns
DA setup to AD transition time
tDAs1
15
-
-
ns
DA setup to RDn deassert time
tDAs2
tHCLK + 12
--
ns
DA hold from AD transition time
tDAh1
0-
-
ns
DA hold from RDn deassert time
tDAh2
0-
-
ns
Figure 8. Static Memory Multiple Word Read 8-bit Cycle Timing Measurement
1
CSn
WRn
RDn
DA
AD
DQMn
t
ADs
t
AD1
t
AD2
t
AD2
t
DAs1
t
RDd
t
DAh1
t
DAh1
t
DAh1
t
DAs1
t
DAs1
t
DAs2
t
DAh2
t
ADh
WAIT
t
RDd
t
DQMd
t
AD3



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