參數(shù)資料
型號(hào): MT9079
廠商: Mitel Networks Corporation
英文描述: Advanced Controller for E1(先進(jìn)的E1幀調(diào)節(jié)器和控制器)
中文描述: 高級(jí)控制器素E1(先進(jìn)的素E1幀調(diào)節(jié)器和控制器)
文件頁(yè)數(shù): 46/60頁(yè)
文件大?。?/td> 347K
代理商: MT9079
MT9079
4-252
Notes:
1. High impedance is measured by pulling to the appropriate rail with R
L
. Timing is corrected to cancel time taken to discharge C
L
.
2. Outputs are compatible with both CMOS and TTL logic levels. Timing parameters are measured with respect to both CMOS
(V
CT
=0.5V
DD
) and TTL (V
TT
=1.5V) references and the worst case value is specified.
3. DS and CS may be connected together.
4. t
DAZ
is measured with respect to the raising edge of DS or CS, whichever occurs first.
Figure 17 - Microprocessor Timing Diagram
AC Electrical Characteristics
-
Microprocessor Timing
Characteristics
Sym
Min
Typ
Max
Units
Conditions/Notes
1
DS low
t
DSL
70
ns
2
DS High
t
DSH
50
ns
3
CS Setup
t
CSS
0
ns
See Note 3
4
R/W Setup
t
RWS
5
ns
5
Address Setup
t
ADS
5
ns
6
CS Hold
t
CSH
0
ns
See Note 3
7
R/W Hold
t
RWH
0
ns
8
Address Hold
t
ADH
0
ns
9
Data Delay Read
t
DDR
120
ns
C
L
=150pF, R
L
=1k
See Note 2
10
Data Active to High Z Delay
t
DAZ
50
ns
C
L
=150pF, R
L
=1k
See Notes 1, 2 & 4
11
Data Setup Write
t
DSW
5
ns
12
Data Hold Write
t
DHW
25
ns
DS
CS
R/W
A0-A4
D0-D7
READ
D0-D7
WRITE
t
CSS
t
RWS
t
ADS
t
CSH
t
RWH
t
ADH
t
DSW
t
DAZ
t
DDR
t
DHW
t
DSH
t
DSL
VALID DATA
VALID DATA
V
TT
V
TT
V
TT
V
TT
V
TT,
V
CT
V
TT
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