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參數(shù)資料
| 型號： | MH88628 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Central Office SLIC(用于中央辦公線卡的用戶線接口電路) |
| 中文描述： | 中央辦公室用戶接口（用于中央辦公線卡的用戶線接口電路） |
| 文件頁數(shù)： | 3/17頁 |
| 文件大小： | 91K |
| 代理商： | MH88628 |
2-203
Preliminary Information
MH88628
20
N1
Network Balance Node 1(Input).
0.1 times the impedance between pins N1 and N2 must
match the device’s input impedance, while 0.1 times the impedance between pins N1 and
AGND is the device’s network balance impedance. This node is active only when NS is at
logic high. This node may be terminated when not used (i.e., NS at logic low).
21
N2
Network Balance Node 2 (Output).
See N1 for description.
22
Z900
Line Impedance 900
Node.
Connects to Z1 for a line impedance of 900
. This node
should be left open circuit when not used.
23
Z1
Line Impedance Node 1 (Input)
. 0.1 times the times the impedance between pins Z1 and
Z2 is the device’s line impedance. This node must always be connected.
24
Z2
Line Impedance Node 2 (Output).
0.1 times the times the impedance between pins Z1
and Z2 is the device’s line impedance. This node should be left open circuit when not used.
25
TX
Transmit (Output)
. 4-Wire (AGND) referenced audio output.
26
RX
Receive (Input)
. 4-Wire (AGND) referenced audio input.
27
GTX0
Transmit Gain Node 0
. Connects to GTX1 for 0dB transmit gain.
28
GTX1
Transmit Gain Node 1
. A resistor to AGND provides transmit gain adjustment.
29
GRX0
Receive Gain Node 0.
Connects to GRX1 for 0dB gain.
30
GRX1
Receive Gain Node 1.
A resistor to AGND provides receive gain adjustment.
31
ACRI
AC Ringing Voltage Input.
A 1.5Vrms 20Hz signal is applied to this input.
32
Z600
Line Impedance 600
Node (Output).
Connects to Z1 for a line impedance of 600
.
This pin should be left open circuit when not used.
33
NS
Network Balance Setting (Input).
The logic level at NS selects the network balance
impedance. A logic 0 enables an internal balance equivalent to the input impedance (Z
in
).
While a logic 1 enables an external balance 0.1 times the impedance between pins N1 and
AGND balanced to 0.1 times the impedance between pins N1 and N2. The impedance
between N1 and N2 must be equivalent to 10 times the input impedance (Z
in
).
Off-Hook Indication (Output).
A logic low output indicates when the subscriber equipment
has gone Off-Hook.
34
SHK
35
UD
Unbalance Detect (Output).
A log IC low output indicates when the DC current flow in the
Tip and Ring leads is unbalanced, indicating that the subscriber equipment has grounded
the Ring lead.
36,37,38
IC
Internal Connection.
These pins are internally connected and must be left open
39
VEE
Negative Supply Voltage.
-5V dc.
40
VDD
Positive Supply Voltage.
+5V dc.
Pin Description (Continued)
Pin #
Name
Description
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MH88631-2 | Central Office Interface (LS/GS) Preliminary Information |
| MH88631 | Central Office Interface (LS/GS) Preliminary Information |
| MH88631-1 | Central Office Interface (LS/GS) Preliminary Information |
| MH88632B | Central Office Interface Circuit(用于中央辦公電話線的接口電路（在音頻轉(zhuǎn)換設(shè)備和用戶線之間提供一個模擬和信號連接）) |
| MH88632B | Central Office Interface Circuit Preliminary Information |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MH88630 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Central Office Interface (LS/GS) Preliminary Information |
| MH88631 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Central Office Interface (LS/GS) Preliminary Information |
| MH88631-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Central Office Interface (LS/GS) Preliminary Information |
| MH88631-2 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Central Office Interface (LS/GS) Preliminary Information |
| MH88632 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Central Office Interface Circuit Preliminary Information |
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