參數(shù)資料
型號(hào)： MT91610AQ
廠商： Mitel Networks Corporation
英文描述： Analog Ringing SLIC
中文描述： 模擬振鈴用戶接口
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 251K
代理商： MT91610AQ
MT91610
Preliminary Information
2
Figure 2 - Pin Connections
Pin Description
Pin #
Name
Description
1
VDD
Positive supply rail, +5V.
2
TD
Tip Drive (Output).
Controls the Tip transistor. Connects 330nF cap to GND.
3
TF
Tip Feed (Output).
Connects to the Tip transistor and to TIP via the Tip feed resistor.
4
NC
No Connection.
Left open.
5
Tip
Tip.
Connects to the TIP lead of the telephone line.
6
VREF
Reference Voltage (Input).
Used to set the subscribers loop constant current. A 0.1uF cap
should be connected between this pin and GND for noise decoupling.
7
LR
Line Reverse (Input).
This pin should be set to 0V for NORMAL polarity. Setting the pin to +5V
reverses the polarity of Tip and Ring.
8
Ring
Ring.
Connects to the RING lead of the telephone line.
9
RF
Ring Feed (Output).
Connects to the RING lead via the Ring feed resistor.
10
NC
No Connection.
Left open.
11
RD
Ring Drive (Output).
Controls the Ring transistor. Connects 330nF cap to GND.
12
CP1
CP1
. A 100nF capacitor should be connected between this pin and pin 13.
13
CP2
CP2.
A 220nF capacitor for loop stability is connected between this pin and pin 14.
14
CP3
CP3.
A 220nF capacitor for loop stability is connected between this pin and pin 13.
15
CP4
CP4
. A 100nF cap should be connected between this pin and GND.
16
ESE
External Signal Enable (Input)
. A logic ’1’ enables the MPI (Meter Pulse Input) to Tip / Ring.
This pin should be set to logic ’0’ when not used.
17
PD
Power Down (Input)
. A logic ’1’ power down the device. This pin should be set to logic ’0’ for
normal operation.
18
DCRI
DC voltage for Ringing Input (Input)
The positive voltage supply for balance ringing. The
input DC voltage range is from 0V to +72V.
19
AGND
Analog Ground.
4 Wire Ground, normally connected to system ground.
VX
GTX0
Z3
Z2
VR
GTX1
ESI
VREF
CP7
SHK
VBAT
UD
RC
CP6
VEE
RV
RING
RF
NC
RD
CP1
CP2
CP3
CP4
ESE
PD
DCRI
LR
TIP
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
TF
VDD
TD
CP5
Z1
AGND
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