EP9302 Datasheet, PDF (21/42 Pages) Cirrus Logic – High-speed ARM9 System-on-chip Processor with MaverickCrunch

EP9302
High-speed ARM9 System-on-chip Processor with MaverickCrunch
Static Memory 32-bit Write on 16-bit External Bus
Parameter
AD setup to WRn assert time
WRn/DQMn deassert to AD transition time
AD hold from WRn deassert time
CSn hold from WRn deassert time
CSn to WRn assert delay time
WRn assert time
WRn deassert time
CSn to DQMn assert delay time
DQMn assert time
DQMn deassert time
WRn / DQMn deassert to DA transition time
WRn / DQMn assert to DA valid time
Symbol
t_ADs
t_ADd
t_ADh
t_CSh
t_WRd
t_WRpwL
t_WRpwH
t_DQMd
t_DQMpwL
t_DQMpwH
t_DAh1
t_DAV
Min
t_HCLK – 3
-
t_HCLK × 2
7
-
-
-
-
-
-
t_HCLK
-
Typ
-
-
-
-
-
t_HCLK × (WST1 + 1)
-
-
t_HCLK × (WST1 + 1)
-
-
-
Max
-
t_HCLK + 6
-
-
2
-
(t_HCLK × 2) + 14
1
-
(t_HCLK × 2) + 7
-
8
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t_ADs
AD
CSn
WRn
t_WRd
RDn
DQMn
t_DQMd
DA
WAIT
t_ADd
t_ADh
t_WRpwL
t_DQpwL
t_DAV
t_WRpwH
t_WRpwL
t_DQpwH
t_DAh
t_DQpwL
t_DAV
Figure 9. Static Memory Multiple Word Write 16-bit Cycle Timing Measurement
t_CSh
t_DAh
DS653PP3
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