MT91610AQ Zarlink Semiconductor, MT91610AQ Datasheet - Page 2

• Manufacturer Part Number: MT91610AQ
• Description: Description = Short Loop Subscriber Line Interface Circuit (SLIC) With 2-4 Wire Conversion, Programmable Line Impedance, Ringing Amplification And On-hook Transmission For Did ;; Package Type = Qsop ;; No. Of Pins = 36
• Manufacturer: Zarlink Semiconductor

MT91610
Pin Description
2
Pin #
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
AGND
Name
VREF
DCRI
VDD
Ring
ESE
CP1
CP2
CP3
CP4
NC
Tip
NC
RD
PD
TD
TF
LR
RF
Positive supply rail, +5V.
Tip Drive (Output). Controls the Tip transistor. Connects 330nF cap to GND.
Tip Feed (Output). Connects to the Tip transistor and to TIP via the Tip feed resistor.
No Connection. Left open.
Tip. Connects to the TIP lead of the telephone line.
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.
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.
Ring. Connects to the RING lead of the telephone line.
Ring Feed (Output). Connects to the RING lead via the Ring feed resistor.
No Connection. Left open.
Ring Drive (Output). Controls the Ring transistor. Connects 330nF cap to GND.
CP1. A 100nF capacitor should be connected between this pin and pin 13.
CP2. A 220nF capacitor for loop stability is connected between this pin and pin 14.
CP3. A 220nF capacitor for loop stability is connected between this pin and pin 13.
CP4. A 100nF cap should be connected between this pin and GND.
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.
Power Down (Input). A logic ’1’ power down the device. This pin should be set to logic ’0’ for
normal operation.
DC voltage for Ringing Input (Input) The positive voltage supply for balance ringing. The
input DC voltage range is from 0V to +72V.
Analog Ground. 4 Wire Ground, normally connected to system ground.
VREF
RING
DCRI
VDD
ESE
CP1
CP2
CP3
CP4
TIP
NC
NC
RD
PD
TD
LR
RF
TF
Figure 2 - Pin Connections
15
16
17
18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Description
22
21
20
19
36
35
34
33
32
31
30
29
28
27
26
25
24
23
VEE
RV
CP7
SHK
VBAT
UD
RC
CP6
VR
GTX1
ESI
VX
GTX0
Z3
Z2
CP5
Z1
AGND
Preliminary Information