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MT8985 Datasheet(数据表) 2 Page - Mitel Networks Corporation

部件型号  MT8985
说明  CMOS ST-BUS™ FAMILY Enhanced Digital Switch
下载  18 Pages
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制造商  MITEL [Mitel Networks Corporation]
网页  http://www.mitel.com
标志 MITEL - Mitel Networks Corporation

MT8985 Datasheet(HTML) 2 Page - Mitel Networks Corporation

  MT8985 数据表 HTML 1Page - Mitel Networks Corporation MT8985 数据表 HTML 2Page - Mitel Networks Corporation MT8985 数据表 HTML 3Page - Mitel Networks Corporation MT8985 数据表 HTML 4Page - Mitel Networks Corporation MT8985 数据表 HTML 5Page - Mitel Networks Corporation MT8985 数据表 HTML 6Page - Mitel Networks Corporation MT8985 数据表 HTML 7Page - Mitel Networks Corporation MT8985 数据表 HTML 8Page - Mitel Networks Corporation MT8985 数据表 HTML 9Page - Mitel Networks Corporation Next Button
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MT8985
2-46
Figure 2 - Pin Connections
Pin Description
Pin #
Name
Description
40
DIP
44
PLCC
44
QFP
12
40
DTA
Data Acknowledgement (Open Drain Output). This active low output indicates that
a data bus transfer is complete. A pull-up resistor is required at this output.
2-9
3-5
7-11
41-43
1-5
STi0-
STi7
ST-BUS Input 0 to 7 (Inputs). Serial data input streams. These streams have 32
channels at data rates of 2.048 Mbit/s.
10
12
6
VDD
+5 Volt Power Supply rail.
11
13
7
F0i
Frame Pulse (Input): This input accepts and automatically identifies frame
synchronization signals formatted according to different backplane specifications
such as ST-BUS and GCI.
12
14
8
C4i
Clock (Input). 4.096 MHz serial clock for shifting data in and out of the data streams.
13-18 15-17
19-21
9-11
13-15
A0-A5 Address 0 to 5 (Inputs). These lines provide the address to MT8985 internal
registers.
19
22
16
DS
Data Strobe (Input). This is the input for the active high data strobe on the
microprocessor interface. This input operates with CS to enable the internal read and
write generation.
20
23
17
R/W
Read/Write (Input). This input controls the direction of the data bus lines (D0-D7)
during a microprocessor access.
DTA
STi0
STi1
STi2
STi3
STi4
STi5
STi6
STi7
VDD
F0i
C4i
A0
A1
A2
A3
A4
A5
DS
CSTo
ODE
STo0
STo1
STo2
STo3
STo4
STo5
STo6
STo7
VSS
D0
D1
D2
D3
D4
D5
D6
D7
CS
1
6 5 4 3 2
444342 41 40
7
8
9
10
11
12
13
14
15
16
39
38
37
36
35
34
33
32
31
30
23
1819 20 21 22
24 25 26 27 28
17
29
STi3
STi4
STi5
STi6
STi7
VDD
F0i
C4i
A0
A1
A2
STo3
STo4
STo5
STo6
STo7
VSS
D0
D1
D2
D3
D4
40 PIN PLASTIC DIP
44 PIN PLCC
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
R/W
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
1
2
3
4
5
6
7
8
9
10
33
32
31
30
29
28
27
26
25
24
11
23
44 PIN QFP
STi3
STi4
STi5
STi6
STi7
VDD
F0i
C4i
A0
A1
A2
STo3
STo4
STo5
STo6
STo7
VSS
D0
D1
D2
D3
D4




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