L9313 datasheet(2/40 Pages) AGERE

2 / 40 page

Data Sheet

September 2001

Full-Feature SLIC and Ringing Relay for TR-57 Applications

L9313 Line Interface and Line Access Circuit

Agere Systems Inc.

Table of Contents

Contents

Page

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 Modes ...........................................11

Powerup, Forward Battery....................................11

Powerup, Reverse Battery ...................................11

Scan .....................................................................11

Ground Start.........................................................12

Ringing .................................................................12

Disconnect—Break Before Make .........................12

Tip Amp ................................................................12

Ring Amp .............................................................12

Reset ....................................................................12

Special States .........................................................12

Thermal Shutdown ...............................................12

Battery Out of Range ...........................................12

Absolute Maximum Ratings ......................................13

Electrical Characteristics ...........................................14

Ring Trip Detector ...................................................15

SLIC Two-Wire Port ................................................16

Analog Pin Characteristics ......................................17

ac Feed Characteristics ..........................................18

Logic Inputs and Outputs, VCC = 5.0 V ...................19

Timing Requirements ..............................................19

Switch Characteristics.............................................20

On-State Switch I-V Characteristics........................21

Test Configurations ...................................................22

Applications ...............................................................24

dc Characteristics ...................................................24

Power Control.......................................................24

Power Derating.....................................................24

Contents

Page

Automatic Battery Switch .................................... 25

Power Control Resistor ....................................... 25

Overhead Voltage ............................................... 26

dc Loop Current Limit .......................................... 27

Loop Range......................................................... 27

Battery Feed........................................................ 27

Battery Reversal Rate ......................................... 28

Longitudinal to Metallic Balance.......................... 28

Supervision............................................................... 29

Loop Closure.......................................................... 29

Ring Trip ................................................................ 29

Ring Ground Detector ............................................ 29

Switching Behavior................................................. 29

Make-Before-Break Operation ............................... 29

Break-Before-Make Operation ............................... 30

Protection ................................................................. 30

External Protection................................................. 30

Active Mode Response at PT/PR........................... 31

Ring Mode Response at PT/PR ............................. 31

Internal Tertiary Protection..................................... 32

Diode Bridge........................................................ 32

Battery Out of Range Detector: High

(Magnitude) ................................................. 32

Battery Out of Range Detector: Low

(Magnitude) ................................................. 32

ac Applications ......................................................... 32

ac Parameters........................................................ 32

Codec Types .......................................................... 32

First-Generation Codecs ..................................... 33

Third-Generation Codecs .................................... 33

ac Interface Network .............................................. 33

Design Tools .......................................................... 34

First-Generation Codec ac Interface Network........ 34

First-Generation Codec ac Interface

Network: Resistive Termination ................... 35

Example 1, Real Termination .............................. 35

Third-Generation Codec ac Interface

Network: Complex Termination ................... 38

Outline Diagram........................................................ 40

Ordering Information................................................. 40

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