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): 19/48頁(yè)
文件大小: 716K
代理商: EP9307-IRZ
DS667PP3
Copyright 2004 Cirrus Logic (All Rights Reserved)
19
EP9307
ARM9 SOC with Ethernet, USB, Display and Touchscreen
Static Memory Single Word Read Cycle
See
“Timing Conditions” on page 14
for definition of HCLK.
Parameter
Symbol
Min
Typ
Max
Unit
AD setup to RDn assert time
t
ADs
-
5
-
ns
AD hold from RDn deassert time
t
ADh
-
t
HCLK
×
2
-
ns
RDn assert time
t
RDpw
-
t
HCLK
×
(WST1 + 2)
t
HCLK
×
33
ns
CSn assert to RDn assert delay time
t
RDd
-
0
-
ns
CSn deassert to RDn deassert delay time
t
RDh
-
0
-
ns
CSn assert to DQMn assert delay time
t
DQMd
-
0
-
ns
CSn deassert to DQMn deassert delay time
t
DQMh
-
0
-
ns
DA setup to RDn deassert time
t
DAs
-
t
HCLK
+ 6
-
ns
DA hold from RDn deassert time
t
DAh
0
0
-
ns
Figure 6. Static Memory Single Word Read Cycle Timing Measurement
CSn
WRn
RDn
DQMn
AD
DA
t
ADs
t
RDd1
t
DQMd1
t
ADh
t
RDd2
t
DQMd2
t
DAs
t
DAh
WAIT
t
RDpw
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