ep9307 Cirrus Logic, Inc., ep9307 Datasheet - Page 21

• Manufacturer Part Number: ep9307
• Description: Arm9 Soc With Ethernet, Usb, Display, And Touchscreen
• Manufacturer: Cirrus Logic, Inc.

Static Memory 32-bit Read on 8-bit External Bus
DS667PP4
AD setup to CSn assert time
CSn assert to Address transition time
Address assert 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 setup to RDn deassert time
DA hold from AD transition time
DA hold from RDn deassert time
DQMn
WAIT
WRn
RDn
CSn
AD
DA
Parameter
t
ADs
Figure 8. Static Memory Multiple Word Read 8-bit Cycle Timing Measurement
t
DAs1
t
AD1
t
t
RDd
DQMd
©
Copyright 2005 Cirrus Logic (All Rights Reserved)
Symbol
t
t
RDpwL
t
t
t
t
DQMd
t
t
t
t
t
t
DAs1
DAs2
DAh1
DAh2
ADs
AD1
AD2
AD3
ADh
RDd
t
AD2
t
DAh1
t
HCLK
t
t
Min
HCLK
HCLK
15
0
0
-
-
-
-
-
-
+ 12
ARM9 SOC with Ethernet, USB, Display and Touchscreen
t
DAs1
t
t
HCLK
AD2
t
DAh1
t
t
t
HCLK
HCLK
HCLK
× (4 × WST1 + 5)
× (WST1 + 1)
× (WST1 + 1)
× (WST1 + 2)
Typ
-
-
-
-
-
-
-
-
t
DAs1
t
t
AD3
DAh1
1
t
RDd
Max
3
1
-
-
-
-
-
-
-
-
-
-
t
DAs2
t
DAh2
EP9307
Unit
t
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ADh
21