MT91610 Ver la hoja de datos (PDF) - Zarlink Semiconductor Inc
Número de pieza
componentes Descripción
Fabricante
MT91610 Datasheet PDF : 20 Pages
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MT91610
Preliminary Information
VDD 1
TD 2
TF 3
NC 4
TIP 5
VREF 6
LR 7
RING 8
RF 9
NC 10
RD 11
CP1 12
CP2 13
CP3 14
CP4 15
ESE 16
PD 17
DCRI 18
36 VEE
35 RV
34 CP7
33 SHK
32 VBAT
31 UD
30 RC
29 CP6
28 VR
27 GTX1
26 ESI
25 VX
24 GTX0
23 Z3
22 Z2
21 CP5
20 Z1
19 AGND
Pin Description
Figure 2 - Pin Connections
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.
2
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