EP9301 Datasheet, PDF (20/41 Pages) Cirrus Logic – Entry-level ARM9 System-on-chip Processor

EP9301
Entry Level ARM9 System-on-Chip Processor
Static Memory 32-bit Read on 16-bit External Bus
Parameter
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
Symbol
t_ADs
t_ADd1
t_ADd2
t_ADh
t_RDpwL
t_RDd
t_DQMd
t_DAs1
t_DAs2
t_DAh1
t_DAh2
Min
t_HCLK
-
-
t_HCLK
-
-
-
15
t_HCLK + 12
0
0
Typ
-
t_HCLK × (WST1 + 1)
t_HCLK × (WST1 + 2)
-
t_HCLK × ((2 × WST1) + 3)
-
-
-
-
-
-
Max
-
-
-
-
-
3
1
-
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t_ADs
AD
CSn
WRn
RDn
DQMn
DA
WAIT
t_ADd1
t_ADd2
t_RDd
t_RDpwl
t_DQMd
t_DAs1
t_DQMh
t_DAh1 t_DAs2
Figure 8. Static Memory Multiple Word Read 16-bit Cycle Timing Measurement
t_ADh
t_RDh
t_DAh2
20
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