English
Language : 

EP9301 Datasheet, PDF (21/41 Pages) Cirrus Logic – Entry-level ARM9 System-on-chip Processor
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
tADs
tADd
tADh
tCSh
tWRd
tWRpwL
tWRpwH
tDQMd
tDQMpwL
tDQMpwH
tDAh1
tDAV
Min
tHCLK – 3
-
tHCLK × 2
7
-
-
-
-
-
-
tHCLK
-
EP9301
Entry Level ARM9 System-on-Chip Processor
Typ
-
-
-
-
-
tHCLK × (WST1 + 1)
-
-
tHCLK × (WST1 + 1)
-
-
-
Max
-
tHCLK + 6
-
-
2
-
(tHCLK × 2) + 14
1
-
(tHCLK × 2) + 7
-
8
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tADs
AD
CSn
WRn
tWRd
RDn
DQMn
tDQMd
DA
WAIT
tADd
tADh
tWRpwL
tDQpwL
tDAV
tWRpwH
tWRpwL
tDQpwH
tDAh
tDQpwL
tDAV
Figure 9. Static Memory Multiple Word Write 16-bit Cycle Timing Measurement
tCSh
tDAh
DS636PP5
©Copyright 2005 Cirrus Logic (All Rights Reserved)
21