ep9301 Cirrus Logic, Inc., ep9301 Datasheet - Page 23

• Manufacturer Part Number: ep9301
• Description: Entry-level Arm9 System-on-chip Processor
• Manufacturer: Cirrus Logic, Inc.

Static Memory Burst Write Cycle
DS636PP5
AD setup to WRn assert time
AD hold from WRn deassert time
WRN/DQMn deassert to AD transition time
CSn hold from WRn deassert time
CSn to WRn assert delay time
CSn to DQMn assert delay time
DQMn assert time
DQMn deassert time
WRn assert time
WRn deassert time
WRn/DQMn deassert to DA transition time
WRn/DQMn assert to DA valid time
DQMn
WAIT
WRn
CSn
AD
RD
DA
Note:
t
DQMd
t
These characteristics are valid when the Page Mode Enable (Burst Mode) bit is set. See the User's Guide for details.
WRd
t
ADs
Parameter
t
DAv
t
t
DQpwL
WRpwL
Figure 11. Static Memory Burst Write Cycle Timing Measurement
t
t
t
ADd
WRpwH
DQpwH
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Copyright 2005 Cirrus Logic (All Rights Reserved)
t
DAh
Symbol
t
t
t
t
t
DQpwH
WRpwH
DQpwL
WRpwL
t
DQMd
t
t
t
t
t
t
WRd
ADs
ADh
ADd
CSh
DAh
DAv
t
t
HCLK
HCLK
t
Min
HCLK
7
− 3
× 2
Entry Level ARM9 System-on-Chip Processor
t
t
HCLK
HCLK
× (WST1 + 11)
× (WST1 + 1)
Typ
(t
(t
HCLK
HCLK
t
HCLK
Max
× 2) + 14
2
1
8
× 2) + 7
+ 6
t
ADh
t
EP9301
CSh
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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