LUCL9500 AGERE [Agere Systems], LUCL9500 Datasheet

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LUCL9500

Manufacturer Part Number
LUCL9500
Description
High-Voltage Ringing SLIC for VolP Applications
Manufacturer
AGERE [Agere Systems]
Datasheet
L9500A Introduction
The Agere Systems Inc. L9500A is a subscriber line
interface circuit that is optimized for short-loop,
power-sensitive applications. This device provides
the complete set of line interface functionality (includ-
ing power ringing) needed to interface to a subscriber
loop. This device has the capability to operate with a
V
mize external components required at all device
interfaces. This device is optimized to interface to
data over cable service interface specification (DOC-
SIS) compliant cable modem gateway, multi-media
adaptor, and residential gateway products, such as
the Broadcom
and BCM1101 and equivalent products.
Features
L9500A
High-Voltage Ringing SLIC for VoIP Applications
CC
Differential ringing and codec interface
Onboard ringing generation
Three ringing input options:
Flexible V
Battery switch to minimize off-hook power
Eight operating states:
Ultralow on-hook power:
Loop start, ring trip, and ground start detection
Software-controllable dual current limit option
28-pin PLCC package
48-pin MLCC package
— Sine wave
— PWM
— Logic level square wave
— 5 V or 3.3 V V
— No –5 V required
— Scan mode for minimal power dissipation
— Forward and reverse battery active
— On-hook transmission states
— Ground start
— Ring mode
— Disconnect mode
— 27 mW scan mode
— 38 mW active mode
supply of 3.3 V or 5 V and is designed to mini-
CC
®
options:
BCM3351, BCM3352, BCM6352,
CC
Applications
Description
This device is optimized to provide battery feed, ring-
ing, and supervision on short-loop plain old tele-
phone service (POTS) loops.
This device provides power ring to the subscriber
loop through amplification of a low-voltage input. It
provides forward and reverse battery feed states, on-
hook transmission, a low-power scan state, ground
start (tip open), and a forward disconnect state.
The device requires a V
V
ing signal is derived from the high-voltage battery. A
battery switch is included to allow for use of a lower-
voltage battery in the off-hook mode, thus minimizing
short-loop off-hook power.
Ring mode overhead is collapsed, allowing rail-to-rail
operation. In this manner, the L9500 can operate
from a lower 75 V battery to minimize critical power
consumption and at the same time extend subscriber
ringing loop lengths to 500
Loop closure, ring trip, and ground start detection is
available. The loop closure detector has a fixed
threshold with hysteresis. The ring trip detector
requires a single-pole filter, thus minimizing external
components required.
The dc current limit is set and fixed by a logic-control-
lable pin. Ground or open applied to this pin sets the
current limit at the low or high value.
The device is offered with differential ringing and
receive input, making it ideal for direct interface to
DOCSIS compliant cable modem gateway products.
CC
Interface to Broadcom :
— BCM3351 Cable Modem
— BCM3352 Cable Modem
— BCM6352 Integrated Multi-Media Adaptor
— BCM1101 Residential Gateway
Cable Modem
Voice over Internet Protocol (VoIP)
Voice over DSL
Remote Subscriber Units
Broadband Wireless
Short Loop Access
may be either a 5 V or a 3.3 V supply. The ring-
CC
Preliminary Data Sheet
and battery to operate.
and beyond.
September 2001

Related parts for LUCL9500

LUCL9500 Summary of contents

Page 1

L9500A High-Voltage Ringing SLIC for VoIP Applications L9500A Introduction The Agere Systems Inc. L9500A is a subscriber line interface circuit that is optimized for short-loop, power-sensitive applications. This device provides the complete set of line interface functionality (includ- ing power ...

Page 2

High-Voltage Ringing SLIC for VoIP Applications Contents L9500A Introduction ..................................................................................................................................................1 Features ..................................................................................................................................................................1 Applications.............................................................................................................................................................1 Description ..............................................................................................................................................................1 Features ....................................................................................................................................................................4 Description.................................................................................................................................................................4 Architecture Diagram.................................................................................................................................................6 Pin Information ..........................................................................................................................................................7 Operating States........................................................................................................................................................9 State Definitions ......................................................................................................................................................10 Forward Active ......................................................................................................................................................10 Reverse Active ......................................................................................................................................................10 Scan ......................................................................................................................................................................10 On-Hook Transmission—Forward Battery ............................................................................................................10 ...

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September 2001 Figures Figure 1. Architecture Diagram ................................................................................................................................6 Figure 2. 28-pin PLCC Diagram ...............................................................................................................................7 Figure 3. 48-pin MLF Diagram .................................................................................................................................7 Figure 4. Basic Test Circuit .................................................................................................................................... 19 Figure 5. Metallic PSRR ......................................................................................................................................... 20 Figure 6. Longitudinal PSRR .................................................................................................................................. 20 Figure ...

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High-Voltage Ringing SLIC for VoIP Applications Features On board balanced ringing generation: — No ring relay — No bulk ring generator required — ring frequency supported — Sine wave input-sine wave output — PWM input-sine ...

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September 2001 Description (continued) Forward and reverse battery active modes are used for off-hook conditions. Since this device is designed for short-loop applications, the lower-voltage V applied during the forward and reverse active Battery reversal is quiet, without breaking the ...

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High-Voltage Ringing SLIC for VoIP Applications Architecture Diagram V REF VITR AAC 1.5 V BAND-GAP REFERENCE TXI ITR – (ITR/306) OUT VTX AX V REF + RFT PR 18 TIP/RING CURRENT SENSE RFR AGND ...

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September 2001 Pin Information RING INN RING INP DCOUT CF2 CF1 RTFLT V REF RING INN RING INP DCOUT NC CF2 NC CF1 NC RTFLT Agere Systems Inc. High-Voltage Ringing SLIC for VoIP Applications ...

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High-Voltage Ringing SLIC for VoIP Applications Pin Information (continued) Table 1. Pin Descriptions 28-Pin 48-Pin Symbol PLCC MLCC 1 43 NSTAT 2 45 VITR 3 47 RCVP 4 48 RCVN 5 1 RING 6 2 RING 7 6 DCOUT 8 ...

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September 2001 Pin Information (continued) Table 1. Pin Descriptions (continued) 28-Pin 48-Pin Symbol PLCC MLCC 19 25 FB2 20 26 FB1 ITR 27 ...

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High-Voltage Ringing SLIC for VoIP Applications State Definitions Forward Active Pin PT is positive with respect to PR applied to tip/ring drive amplifiers. BAT2 Loop closure and common-mode detect are active. Ring trip detector is turned off to ...

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September 2001 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso- lute stress ratings only. Functional operation of the device is not implied at these or any other ...

Page 12

High-Voltage Ringing SLIC for VoIP Applications Electrical Characteristics Table 6. Environmental Temperature Range 1 Humidity Range 1. Not to exceed 26 grams of water per kilogram of dry air. Table Supply Currents V = – ...

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September 2001 Electrical Characteristics Table 9. 3.3 V Supply Currents V = – – BAT1 BAT2 CC Supply Currents (scan state; no loop current): I VCC I VBAT1 I VBAT2 Supply Currents (forward/reverse active; no ...

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High-Voltage Ringing SLIC for VoIP Applications Electrical Characteristics Table 11. 2-Wire Port Parameter Tip or Ring Drive Current = dc + Longitudinal + Signal Currents Tip or Ring Drive Current = Ringing + Longitudinal Signal Current Longitudinal Current Capability per ...

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September 2001 Electrical Characteristics Table 11. 2-Wire Port (continued) Loop Closure Threshold: Active/On-hook Transmission Modes Scan Mode Loop Closure Threshold Hysteresis 3 Longitudinal to Metallic Balance at PT/PR Test Method: Q552 ...

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High-Voltage Ringing SLIC for VoIP Applications Electrical Characteristics Table 13. ac Feed Characteristics Parameter 1 ac Termination Impedance Total Harmonic Distortion (200 Hz—4 kHz) Off-hook On-hook Transmit Gain (f = 1004 Hz, 1020 Hz) PT/PR Current to VITR Receive Gain, ...

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September 2001 Electrical Characteristics Table 14. Logic Inputs and Outputs (V Parameter Input Voltages: Low Level High Level Input Current: Low Level ( High Level ( ...

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High-Voltage Ringing SLIC for VoIP Applications Electrical Characteristics Table 17. Ringing Specifications RING : INN/P Input Voltage Swing Input Impedance Ring Signal Isolation: PT/PR to VTX Ring Mode Ring Signal Isolation: RING to PT/PR IN Nonring Mode Ring Signal Distortion: ...

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September 2001 Test Configurations RTFLT 0.1 F 383 k DCOUT 30 TIP PR R LOOP 100 /600 30 RING PT V PROG V REF FB2 FB1 CF1 0.1 F CF2 0.1 F Agere Systems Inc. High-Voltage Ringing SLIC for VoIP ...

Page 20

High-Voltage Ringing SLIC for VoIP Applications Test Configurations (continued BAT 100 4 BAT V CC TIP + BASIC TEST CIRCUIT 600 V T/R – RING PSRR = 20log V Figure 5. Metallic ...

Page 21

September 2001 Applications Power Control Under normal device operating conditions, power dissi- pation on the device must be controlled to prevent the device temperature from rising above the thermal shut- down and causing the device to shut down. Power dis- ...

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High-Voltage Ringing SLIC for VoIP Applications Applications (continued) dc Loop Current Limit Current limit may be chosen from two discrete values mA, depending (25 mA) or left floating (40 mA). Note that there ...

Page 23

September 2001 Applications (continued) Battery Reversal Rate The rate of battery reverse is controlled or ramped by capacitors FB1 and FB2. A chart showing FB1 and FB2 values vs. typical ramp time is given below. Leave FB1 and FB2 open ...

Page 24

High-Voltage Ringing SLIC for VoIP Applications Applications (continued) Power Ring The device offers a ring mode, in which a balanced power ring signal is provided to the tip/ring pair. During the ring mode, a user-supplied low-voltage ring signal is input ...

Page 25

September 2001 Applications (continued) GND BAT ac Applications ac Parameters There are four key ac design parameters. Termination impedance is the impedance looking into the 2-wire port of the line card set to match the ...

Page 26

High-Voltage Ringing SLIC for VoIP Applications ac Applications (continued) Design Examples Broadcom 3352 Interface Network The following reference circuit shows the complete SLIC schematic for interface to the Broadcom BCM3352 as designed on the Broadcom BCM93352SV application reference design and ...

Page 27

September 2001 ac Applications (continued) Design Examples (continued) Table 21. Parts List L9500; Agere L9500 and Broadcom BCM3352 (per Broadcom BCM93552SV Application Board—SLIC Daughter Boad Components); Fully Programmable Name Value Tolerance Fault Protection Protector ...

Page 28

High-Voltage Ringing SLIC for VoIP Applications Outline Diagrams 28-Pin PLCC Dimensions are in millimeters. PIN #1 IDENTIFIER ZONE 28 12.446 0.127 11.506 0.076 0.51 MIN 1.27 TYP 0.330/0.533 September 2001 25 11.506 0.076 ...

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September 2001 Outline Diagrams (continued) 48-Pin MLCC Dimensions are in millimeters. Notes: The dimensions in this outline diagram are intended for informational purposes only. For detailed schemat- ics to assist your design efforts, please contact your Agere Sales Representative. The ...

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High-Voltage Ringing SLIC for VoIP Applications Outline Diagrams (continued) 48-Pin MLCC, JEDEC MO-220 VKKD-2 Dimensions are in millimeters. Notes: The dimensions in this outline diagram are intended for informational purposes only. For detailed schemat- ics to assist your design efforts, ...

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... September 2001 Ordering Information Device Part Number Description LUCL9500AGF-D SLIC LUCL9500AGF-DT SLIC LUCL9500ARG-D SLIC Agere Systems Inc. High-Voltage Ringing SLIC for VoIP Applications Package 28-Pin PLCC, dry-bagged 28-Pin PLCC, dry-bagged, tape and reel 48-Pin MLF, dry-bagged Comcode 108955501 108955519 108955485 31 ...

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Broadcom is a registered trademark of Broadcom Corporation. IEEE is a registered trademark of The Institute of Electrical and Electronics Engineers, Inc. Murata is a registered trademark of Murata Manufacturing Company LTD. For additional information, contact your Agere Systems Account ...

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