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參數(shù)資料
| 型號(hào)： | MH89793 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | E1 Transceiver with Selectable Impedance Preliminary Information |
| 中文描述： | E1收發(fā)器具有可選的阻抗的初步信息 |
| 文件頁(yè)數(shù)： | 2/8頁(yè) |
| 文件大?。?/td> | 70K |
| 代理商： | MH89793 |
4-230
MH89793
Preliminary Information
Figure 2 - Pin Connections
Pin Description
Pin #
Name
Description
1
RLA
Received Line A (Input)
. The A wire or Tip connection of the E1 receive line is connected
to this pin.
2
RLB
Received Line B (Input).
The B wire or Ring connection of the E1 receive line is
connected to this pin.
3
TLA
Transmit Line B (Output).
The A wire or Tip connection of the E1 receive line connected
to this pin.
4
TLB
Transmit Line B (Output)
. The B wire or Ring connection of the E1 receive line connected
to this pin.
5
TZD2
Transmit Impedance Select.
This pin is connected to pin 4 TLB to select 75
impedance.
For 120
operation this pin is left open circuit.
Transmit Impedance Select.
This pin is connected to pin 3 TLA to select 75
impedance.
For 120
operation this pin is left open circuit.
6
TZC2
7
TZA3
Transmit Impedance Select.
This pin is connected to pin 9 TZA2 to select 75
impedance. For 120
operation this pin is left open circuit.
Transmit Impedance Select.
This pin is connected to pin 10 TZB2 to select 120
impedance. For 75
operation this pin is left open circuit.
Transmit Impedance Select.
This pin is connected to pin 7 TZA3 to select 75
impedance. For 120
operation this pin is left open circuit.
8
TZA3
9
TZA2
10
TZB2
Transmit Impedance Select.
This pin is connected to pin 8 TZB1 to select 120
impedance. For 75
operation this pin is left open circuit.
Transmit Impedance Select.
This pin is connected to pin 4 TLB to select 120
impedance. For 75
operation this pin is left open circuit.
Transmit Impedance Select.
This pin is connected to pin 3 TLA to select 120
impedance. For 75
operation this pin is left open circuit.
11
TZD1
12
TZC1
13
TZA1
Transmit Impedance Select.
This pin is connected to pin 9 TZA2 to select 120
impedance. For 75
operation this pin is left open circuit.
14
NC
No Connection
. This pin is used for internal connection.
15
TXA
Transmit A (Input).
A unipolar signal from the framer device used in conjunction with TXB
is used to generate the bipolar output signal.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
21
22
23
24
25
26
27
28
20
19
18
17
16
15
RLA
RLB
TLA
TLB
TZD2
TZC2
TZA3
TZB1
TZA2
TZB2
TZD1
TZC1
TZA1
NC
TXA
TXB
NC
NC
NC
VDD
E20
RXB
RXA
VSS
LOS
NC
RZA
RZB
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