LUCL9313AP-D AGERE [Agere Systems], LUCL9313AP-D Datasheet

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LUCL9313AP-D

Manufacturer Part Number
LUCL9313AP-D
Description
Line Interface and Line Access Circuit Full-Feature SLIC and Ringing for TR-57 Applications
Manufacturer
AGERE [Agere Systems]
Datasheet
Introduction
The Agere Systems Inc. L9313 is a combination full-
feature, ultralow-power SLIC, solid-state ringing
access relay, and line test matrix. It is part of a pin-
for-pin compatible family of devices designed to
serve a wide variety of applications. The L9313 is
optimized for TR-57 applications where forward and
reverse battery and ground start are required.
Features
SLIC
Solid-State Ring Relay
Applications
L9313 Line Interface and Line Access Circuit
Full-Feature SLIC and Ringing Relay for TR-57 Applications
5 V and battery operation
Optional automatic battery switch
Seven operational modes
Appropriate for 58 dB longitudinal balance applica-
tions
Minimal external components required at all inter-
faces
Ultralow power dissipation
Software/hardware adjustable dc parameters and
supervision thresholds
Ground start compatible
Low impulse noise
Current-limited switches/thermal protection
Pair Gain
Digital Loop Carrier (DLC)
Central Office (CO)
Fiber-in-the-Loop (FITL)
Description
The L9313 electronic line interface and line access
circuit (LILAC) provides all the functions that are nec-
essary to interface a codec to the tip and ring of a
subscriber loop, integrating the battery feed and ring-
ing access relay in one low-power, low-cost package.
The L9313 requires a 5 V and battery supply to oper-
ate. Included is an automatic battery switch. The bat-
tery feed offers forward and reverse battery, on-hook
transmission, and ground start operational modes. It
also has a low-power scan and a disconnect mode.
In all operating states, this IC is designed for minimal
power dissipation. This device is designed to mini-
mize the number of external components required at
all interfaces.
The dc template, current limit, and overhead voltage
and loop supervision threshold are programmable via
an applied voltage source. The voltage source may
be an external programmable voltage source or
derived from the V
The integrated solid-state switch offers power ringing
access. Impulse noise is minimized, thus eliminating
the need for external zero-cross switching circuitry.
REF
SLIC output.
September 2001
Data Sheet

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LUCL9313AP-D Summary of contents

Page 1

L9313 Line Interface and Line Access Circuit Full-Feature SLIC and Ringing Relay for TR-57 Applications Introduction The Agere Systems Inc. L9313 is a combination full- feature, ultralow-power SLIC, solid-state ringing access relay, and line test matrix part of ...

Page 2

Full-Feature SLIC and Ringing Relay for TR-57 Applications Contents Introduction..................................................................1 Features ....................................................................1 SLIC .......................................................................1 Solid-State Ring Relay ...........................................1 Applications...............................................................1 Description ................................................................1 Features ......................................................................4 Description...................................................................4 Architecture .................................................................7 Pin Information ............................................................8 Operating States........................................................10 Input State Coding ..................................................10 State Definitions ........................................................11 Primary Control ...

Page 3

September 2001 Figures Figure 1. Architecture Diagram................................... 7 Figure 2. 44-Pin PLCC ............................................... 8 Figure 3. Timing Requirements ................................ 19 Figure 4. On-State Switch I-V Characteristics .......... 21 Figure 5. Basic Test Circuit ...................................... 22 Figure 6. Metallic PSRR ........................................... ...

Page 4

Full-Feature SLIC and Ringing Relay for TR-57 Applications Features SLIC and solid-state ring relay integrated into a sin- gle package 5 V and battery operation User-defined power control options: — Automatic battery switch — Power control resistor — Package thermal ...

Page 5

September 2001 Description (continued) The switch point is a function of the user-programmed dc current limit and the magnitude of the auxiliary bat- tery. Switching from the high-voltage to low-voltage battery is quiet, without interruption of the dc loop cur- ...

Page 6

Full-Feature SLIC and Ringing Relay for TR-57 Applications Description (continued) A programmable external voltage source may be used to provide software control of the overhead. The rate of change of the overhead voltage may be controlled by use of a ...

Page 7

September 2001 Description (continued) The L9313 uses a voltage feed, current sense architec- ture; thus, the transmit gain is a transconductance. The L9313 transconductance is set via a single external resistor, and this device is designed for optimal perfor- mance ...

Page 8

Full-Feature SLIC and Ringing Relay for TR-57 Applications Pin Information FB2 FB1 LCF BGND RPWR V BAT1 V BAT1 BGND TIE B TIE A NC Table 1. Pin Descriptions Pin Symbol Type 1 LCTH I Loop Closure Program Input. Connect ...

Page 9

September 2001 Pin Information (continued) Table 1. Pin Descriptions (continued) Pin Symbol Type 8 FB1 — Polarity Reversal Slowdown Capacitor. Connect a capacitor from this node to ground to control the rate of battery reversal. If controlled battery reversal is ...

Page 10

Full-Feature SLIC and Ringing Relay for TR-57 Applications Pin Information (continued) Table 1. Pin Descriptions (continued) Pin Symbol Type 35 ICM I Common-Mode Current Sense. To program tip or ring ground sense threshold, connect a resistor to ground and connect ...

Page 11

September 2001 Operating States (continued) Input State Coding (continued) Table 3. Supervision Coding Pin NSTAT 0 = off-hook or ring trip 0 = ring ground 1 = on-hook and no ring trip ring ground State Definitions Primary ...

Page 12

Full-Feature SLIC and Ringing Relay for TR-57 Applications State Definitions (continued) Primary Control Modes (continued) Ground Start Tip amplifier is on, tip break switch is open. The device presents a high impedance (>100 pin PT and a ...

Page 13

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 14

Full-Feature SLIC and Ringing Relay for TR-57 Applications Electrical Characteristics In general, minimum and maximum values are testing requirements. However, some parameters may not be tested in production because they are guaranteed by design and device characterization. Typical values reflect ...

Page 15

September 2001 Electrical Characteristics Ring Trip Detector Table 5. Ring Trip Detector Parameter Voltage at Input that will Cause Ring Trip After Appropriate Zero Crossings Voltage at Input that will Cause Immediate Ring Trip 1 Ringing Source : Frequency (f) ...

Page 16

Full-Feature SLIC and Ringing Relay for TR-57 Applications Electrical Characteristics SLIC Two-Wire Port Table 6. SLIC Two-Wire Port Parameter PT and PR Drive Current = dc + Longitudinal + Signal Currents Signal Current Longitudinal Current Capability per Wire (longitudinal current ...

Page 17

September 2001 Electrical Characteristics Analog Pin Characteristics Table 7. Analog Pin Characteristics Parameter TXP (input impedance) V Input Bias Current* (current flow out of pin) PROG LCTH Input Bias Current* (+ current flows into pin) VTX: Output Offset Output Drive ...

Page 18

Full-Feature SLIC and Ringing Relay for TR-57 Applications Electrical Characteristics ac Feed Characteristics Table 8. ac Feed Characteristics Parameter 1 ac Termination Impedance Total Harmonic Distortion (200 Hz—4 kHz) Off-hook On-hook 3 Transmit Gain f = 1004 Hz, 1020 Hz: ...

Page 19

September 2001 Electrical Characteristics Logic Inputs and Outputs, V Table 9. Logic Inputs and Outputs Parameter Input Voltages: Low Level High Level Input Current: Low Level ( High Level (V = ...

Page 20

Full-Feature SLIC and Ringing Relay for TR-57 Applications Electrical Characteristics Switch Characteristics Table 11. Break Switches (SW1, 2) Parameter Off State: Maximum Differential Voltage dc Leakage Current (Vsw = ±320 V) On State (see On-State I-V Switch Characteristics section): Resistance ...

Page 21

September 2001 Electrical Characteristics Switch Characteristics (continued) Table 13. Ringing Access Switch (SW4) Parameter Off State: Maximum Differential Voltage dc Leakage Current (Vsw = ±475 V) (pole to pole) Isolation On State (see On-State Switch I-V Characteristics section): Resistance Voltage ...

Page 22

Full-Feature SLIC and Ringing Relay for TR-57 Applications Test Configurations TRING TRING RRING RING RSW RSW RTS RTS RING LOOP 100 600 50 TIP PT OVH OVH V V PROG PROG LCTH LCTH V V REF REF ...

Page 23

September 2001 Test Configurations (continued) V BAT 100 V S 4.7 µ BAT BASIC 900 V T/R TEST CIRCUIT – --------- - PSRR = 20 log V T/R Figure 6. Metallic PSRR ...

Page 24

Full-Feature SLIC and Ringing Relay for TR-57 Applications Applications dc Characteristics Power Control Under normal device operating conditions, thermal design must ensure that the device temperature does not rise above the thermal shutdown. Power dissipation is highest with higher battery ...

Page 25

September 2001 Applications (continued) dc Characteristics (continued) Automatic Battery Switch (continued) The equation governing the switch point is as follows: V 3.0 – BAT2 R = – 2R – R ---------------------------------- - LOOP LIM A graph showing ...

Page 26

Full-Feature SLIC and Ringing Relay for TR-57 Applications Applications (continued) dc Characteristics (continued) Power Control Resistor (continued) Again assume: T – allowed thermal rise TSD AMBIENT(max) 150 C – Allowed thermal rise = ...

Page 27

September 2001 Applications (continued) dc Characteristics (continued) dc Loop Current Limit In the active modes, dc current limit is programmable via an applied voltage source at the device’s V control input. The voltage source may be an external voltage source ...

Page 28

Full-Feature SLIC and Ringing Relay for TR-57 Applications Applications (continued) dc Characteristics (continued) Battery Feed (continued) As illustrated in Figure 12, as loop length decreases, the tip to ground voltage will decrease with a slope cor- responding to one-half the ...

Page 29

September 2001 Supervision Loop Closure Loop closure supervision threshold is programmed via an applied voltage source or ground, through a resistor at the LCTH input. Loop closure status is presented at the NSTAT output. NSTAT is an unlatched output that ...

Page 30

Full-Feature SLIC and Ringing Relay for TR-57 Applications Supervision (continued) Make-Before-Break Operation On the ring side, going from the ring mode to the active or scan mode, the pnpn will not turn off until the ring current drops below the ...

Page 31

September 2001 Protection (continued) Active Mode Response at PT/PR The line break switches and tip return switch are cur- rent-limited switches. The current-limit mechanism lim- its current through the switch to the specified dc current limit under low frequency or ...

Page 32

Full-Feature SLIC and Ringing Relay for TR-57 Applications Protection (continued) Ring Mode Response at PT/PR For power cross for lower-voltage faults, the ring return switch will behave like the line break switches. How- ever, tip return switch does not have ...

Page 33

September 2001 ac Applications (continued) Codec Types (continued) First-Generation Codecs These perform the basic filtering, A/D (transmit), D/A (receive), and -law/A-law companding. They all have an op amp in front of the A/D converter for transmit gain setting and hybrid ...

Page 34

Full-Feature SLIC and Ringing Relay for TR-57 Applications ac Applications (continued) ac Interface Network (continued) Thus, if the SLIC gains are too low, it will be impossible to synthesize the higher termination impedances. Fur- ther, the termination that is achieved ...

Page 35

September 2001 ac Applications (continued) First-Generation Codec ac Interface Network: Resistive Termination Resistor R is optional. It compensates for any mismatch of input bias voltage at the RCVN/RCVP inputs not used, there may be a slight ...

Page 36

Full-Feature SLIC and Ringing Relay for TR-57 Applications ac Applications (continued) First-Generation Codec ac Interface Network: Resistive Termination Example 1, Real Termination (continued) V BAT1 C VBAT1 0 BGND BAT2 BAT1 PWR T RING V BAT ...

Page 37

September 2001 ac Applications (continued) First-Generation Codec ac Interface Network: Resistive Termination Example 1, Real Termination (continued) Table 17. L9313 Parts List for Agere T7504 First-Generation Codec Resistive Termination, Single Battery Operation Name Value Fault Protection ...

Page 38

Full-Feature SLIC and Ringing Relay for TR-57 Applications ac Applications (continued) Third-Generation Codec ac Interface Network: Complex Termination The following reference circuit shows the complete SLIC schematic for interface to the Agere T8536 third-genera- tion. All ac parameters are programmed ...

Page 39

September 2001 ac Applications (continued) Third-Generation Codec ac Interface Network: Complex Termination Table 18. L9313 Parts List for Agere T8536 Third-Generation Codec, Dual Battery Operation, ac and dc Parameters, Fully Programmable Name Value Fault Protection ...

Page 40

... Ordering Information Device Part Number LUCL9313AP-D LUCL9313AP-DT LUCL9313GP-D LUCL9313GP-DT Telcordia Technologies is a trademark of Bell Communications Research, Inc. IEEE is a registered trademark of The Institute of Electrical and Electronics Engineers, Inc. ANSI is a registered trademark of the American National Standards Institute, Inc. Windows is a registered trademark of Microsoft Corporation. ...

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