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Datasheet: L3000 (STMicroelectronics)

Subscriber Line Interface Kit

 

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STMicroelectronics
L3000S
L3030
June 1997
SUBSCRIBER LINE INTERFACE KIT
PRELI MINARY DAT A
.
PROGRAMMABLE DC FEEDING RESIS-TAN-
CE AND LIMITINGCURRENT (fourvalues avai-
lable)
.
THREE OPERATING MODES :
STAND-BY, CONVERSATION, RINGING
.
NORMAL/BOOSTBATTERY, DIRECT/REVER-
SE POLARITY
.
SIGNALLING FUNCTION (off-hook/GND-key)
.
FILTERED
OFF-HOOK
DETECTION
IN
STAND-BY (10ms)
.
QUICK OFF-HOOK DETECTION IN CONVER-
SATION (< 1ms) FOR LOW DIAL PULSE DE-
TECTION DISTORTION
.
HYBRID FUNCTION
.
RINGING GENERATION WITH QUASI ZERO
OUTPUT IMPEDANCE, ZERO CROSSING IN-
JECTION (no ext. relay needed) AND RING
TRIP DETECTION
.
AUTOMATIC RINGING STOP WHEN OFF-
HOOK IS DETECTED
.
PARALLEL AND SERIAL DIGITAL INTERFA-
CES
.
TELETAXE SIGNALINJECTION (2V
RMS
/5V
RMS
)
.
LOW NUMBER OF EXTERNAL COMPO-
NENTS
.
GOOD REJECTION OF THE NOISE ON BAT-
TERY VOLTAGE (20dB at 10Hz and 35dB at
1kHz)
.
POSSIBILITY TO WORK ALSO WITH HIGH
COMMON MODE CURRENTS
.
INTEGRATED THERMAL PROTECTION WITH
THERMAL OVERLOAD INDICATION
.
SURFACE MOUNT PACKAGE
(PLCC44 + PowerSO-20)
DESCRIPTION
PLCC44
FLEXIWATT15
The ST SLIC KIT (L3000S/L3030) is a set of solid
state devices designed to integrate main of the fun-
ctions needed to interface a telephone line. It con-
sists of 2 integrated devices : the L3000S line
interface circuit and the L3030 control unit.
This kit performs the main features of the BORSHT
functions :
-
Battery feed
-
Ringing
-
Signalling
-
Hybrid
Additional functions, such as battery reversal, extra
batteryuse, line overvoltagesensing and metering-
pulse injection are also featured ; most external
characteristics,as AC and DC impedances,are pro-
grammable with external components.The SLIC in-
jects ringing in balanced mode and for that, as well
as for the operation in battery boosted, a positive
battery voltage shall be available on the subscriber
card. As the right ringing signal amplification both in
voltage and in current is provided by SLIC, the ring
signal generatorshall only provide a low level signal
(0.285Vrms).
This kit is fabricated using a 140V Bipolar technolo-
gy for L3000S and a 12V Bipolar I
2
L technology for
L3030.
L3030 is available PLCC44 and L3000S in both
FLEXIWATT15 and PowerSO-20 for surfacemount
application.
This kit is suitable for all the following applications:
C.O. (CentralOffice),DLC (Digital LoopCarrier) and
high range PABX (Private Automatic Branch Ex-
change).
PowerSO20
slug-up
slug-down
ORDERING NUMBERS :
L3030 (PLCC44)
L3000SX-VM (FLEXIWATT15)
L3000SX (PowerSO20 slug-up)
L3000SX-77 (PowerSO20 slug-down)
1/29
PIN CONNECTIONS (top view)
PLCC44
FLEXIWATT15
V
B-
V
BIM
AGND
TIP
MNT
BGND
V
B+
V
DD
V
IN
N.C.
V
B-
10
8
9
7
6
5
4
3
2
13
14
15
16
17
19
18
20
12
1
11
V
B-
D97TL290
REF
C1
IT
C2
IL
N.C.
RING
V
B-
PowerSO-20 (slug-down)
V
B-
V
BIM
V
IN
V
DD
BGND
MNT
V
B+
TIP
N.C.
RING
N.C.
IL
C2
IT
C1
REF
AGND
V
B-
10
8
9
7
6
5
4
3
2
13
14
15
16
17
19
18
20
12
1
11
V
B-
V
B-
D94TL125
PowerSO-20 (slug-up)
L3000S - L3030
2/29
PIN DESCRIPTION (L3000S)
FLEX.
N
PSO
N
Name
Description
1
3
TIP
A line termination output with current capability up to 100mA (I
a
is the current sourced
from this pin).
2
4
MNT
Positive Supply Voltage Monitor
3
5
V
B
+
Positive Battery Supply Voltage
4
6
BGND
Battery ground relative to the V
B
+ and the V
B
supply voltages.
It is also the reference ground for TIP and RING signals.
5
7
V
DD
Positive Power Supply + 5V
6
8
VIN
2 wire unbalanced voltage input.
7
9
VBIM
Output voltage without current capability, with the following functions :
- give an image of the total battery voltage scaled by 40 to the low voltage part.
- filter by an external capacitor the noise on V
B
.
8
1, 10
11, 20
V
B
Negative Battery Supply Voltage
9
12
AGND
Analog Ground. All input signals and the V
DD
supply voltage must be referred to this pin.
10
13
REF
Voltage reference output with very low temperature coefficient. The connected resistor
sets internal circuit bias current.
11
14
C1
Digital signal input (3 levels) that defines device status with pin 12.
12
15
C2
Digital signal input (3 levels) that defines device status with pin 11.
13
16
I
T
High precision scaled transversal line current signal.
I
T
=
I
a
+
I
b
100
14
17
I
L
Scaled longitudinal line current signal.
I
L
=
I
b
-
I
a
100
15
19
RING
B line termination output with current capability up to 100mA (I
b
is the current sunk into
this pin).
2, 18
N.C.
Not connected
Notes: 1) Unless otherwise specified all the diagrams in this datasheet refers to the FLEXIWATT15 pin connection.
2) All informations relative to the PowerSO-20 package option should be considered as advanced information on a new product
now in development or undergoing evaluation. Details are subject to change without notice.
L3000S - L3030
3/29
PIN DESCRIPTION (L3030)
Pin
Symbol
Function
1
TST
This pin is connected internally for test purpose. It should not be used as a tie point for
external components.
2
REF
Bias Set
3
AGND
Analog Ground
4
VSS
5V
5
VDD
+ 5V
6
N.C.
Not connected.
7
CZS
AC Feedback Input
8
ACF
AC Line Impedance Synthesis
9
ZAC
AC Impedance Adjustement
10
11
12
TST
These pins are connected internally for test purpose. It should not be used as a tie point
for external components.
13
VOUT
Two wire unbalanced output.
14
CM
Capacitor Multiplier Input
15
RC
DC Feedback Input
16
IT
Transversal Line Current
17
RDC
DC Feeding System
18
EIA
Read/write Command
19
NCS
Chip Select Command
20
DIO
Data Input/output
21
DCKL
Clock Signal
22
DGND
Digital Ground
23
N.C.
Not connected.
24
N.C.
Not connected.
25
N.C.
Not connected.
26
CI
Input/output Changing Command
27
C1
State Control Signal 1
28
C2
State Control Signal 2
29
N.C.
Not connected.
30
N.C.
Not connected.
31
IL
Longitudinal Line Current
32
CRTS
Ringtrip Det. & TTX Shaping
33
TTXIN
Teletaxe Signal Input
34
RGTTX
TTX Filter Level Compensation
35
TTXF
TTX Filter Input
36
ZB
Balancing Network
37
38
39
TST
These pins are connected internally for test purpose. It should not be used as a tie point
for external components.
40
TX
4W Sending Output
41
RX/RG
4W Receiving and Ring Input
42
VBIM
Battery Image Input
43
44
TST
These pins are connected internally for test purpose. It should not be used as a tie point
for external components.
L3000S - L3030
4/29
L3000S BLOCK DIAGRAM
L3030 BLOCK DIAGRAM
L3000S - L3030
5/29
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