參數(shù)資料
型號(hào): EP9307-IRZ
廠商: Cirrus Logic, Inc.
英文描述: 432498925
中文描述: ARM9的系統(tǒng)芯片以太網(wǎng)USB顯示器和觸摸屏
文件頁(yè)數(shù): 23/48頁(yè)
文件大?。?/td> 716K
代理商: EP9307-IRZ
DS667PP3
Copyright 2004 Cirrus Logic (All Rights Reserved)
23
EP9307
ARM9 SOC with Ethernet, USB, Display and Touchscreen
Static Memory 32-bit Read on 16-bit External Bus
Parameter
Symbol
Min
Typ
Max
Unit
AD setup to RDn assert time
t
ADs
-
t
HCLK
-
ns
RDn assert to AD transition time
t
ADd1
-
t
HCLK
×
(WST1 + 1)
-
ns
AD transition to RDn deassert time
t
ADd2
-
t
HCLK
×
(WST1 + 2)
-
ns
AD hold from RDn deassert time
t
ADh
-
t
HCLK
×
2
-
ns
RDn assert time
t
RDpwL
-
t
HCLK
×
(2
×
WST1 + 3)
-
ns
CSn to RDn assert delay time
t
RDd
-
0
-
ns
CSn to RDn deassert delay time
t
RDh
-
0
-
ns
CSn to DQMn assert delay time
t
DQMd
-
0
-
ns
CSn to DQMn deassert delay time
t
DQMh
-
0
-
ns
DA to ADsetup time
t
DAs1
-
6
-
ns
DA to RDn setup time
t
DAs2
-
t
HCLK
+ 6
-
ns
AD transition to DA transition hold time
t
DAh1
-
0
-
ns
RDn deassert to DA transition hold time
t
DAh2
-
0
-
ns
Figure 10. Static Memory Multiple Word Read 16 Bit Cycle Timing Measurement
CSn
WRn
RDn
DA
AD
DQMn
t
RDpwl
t
ADd1
t
RDh
t
DQMh
t
DAh2
t
DAs1
t
DAh1
t
DAs2
WAIT
t
ADs
t
RDd
t
DQMd
t
ADh
t
ADd2
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