AudioCodes AC4830 C-C Series Guida del prodotto

US: AudioCodes Inc, 2841 Junction Ave, Suite 114, San Jose, CA 95134.

Tel: 408-5 -0488 –- Fax: 408-5 -0492

International: AudioCodes Ltd, 4 HaHoresh Rd, PO Box 14, Yehud 564 0, Israel.

Tel: +9 2-3-539 4000 –- Fax: +9 2-3-539 4061

Technical Support: support@audiocodes.com

AC4830xC-C VoPP

Voice over Packet Processor

Data ook

Revision 1.0

Catalog Number LTRT-00060

AC4830xC-C Data Book General

Revision 1.0 1 March 2000

About this Data ook

Purpose and Scope

This Data Book escribes the har ware an timing characteristics, applications an use

of the AC4830xC-C VoPP, Voice over Packet Processors, from Au ioCo es Lt . It is

esigne for rea ing by any regular User without specialist skills but familiar with the

applications, pro ucts an services of Au ioCo es Lt .

Structure of this Manual

The Data Book has the following sections, which will help you to fin the information

you nee :

For Information on: Look at Chapter:

Release Notes, Notices and Warranty General

Contents, Figures and Tables Contents

Overview and Features 1. Introduction

The Interfaces of the AC4830xC-C 2. Functional Interfaces

Specification of the AC4830xC-C. 3. Chip Data and Timing

Applications, Evaluation System and Testing 4. Application Notes

PCM Highway Interface 5. PCM Highway Interface

Full Index of the Data Book Index

Abbreviations and Terminology

Each abbreviation, unless wi ely use , is spelle out in full when first use , an only

In ustry stan ar terms are use throughout this manual. The $ symbol in icates

hexa ecimal notation.

Data ook Revision 1.0 - Release Note

This Data Book escribes the latest Hardware an timing specifications for the

AC4830xC-C. The Software specifications are escribe in “AC4830xC-C Designer’s

Manual”, Catalog Number LTRT-00066.

Acknowledgements

NetFax® an NetCo er® are registere by Au ioCo es Lt .

Au ioCo es acknowle ges that various pro ucts referre to in this manual are subject

to copyright an /or tra emark by their respective registere hol ers.

Au ioCo es Lt .

AC4830xC-C VoPP 2 Catalog Number: LTRT-00060

Notice

This Data Book escribes the AC4830xC-C VoPP (Voice over Packet Processors) from

Au ioCo es Lt .

Information containe in this ocument is believe to be accurate an reliable at the time of

printing. However, ue to ongoing pro uct improvements an revisions, Au ioCo es Lt .

cannot guarantee accuracy of printe material after the Date Publishe nor can it accept

responsibility for errors or omissions.

For Technical Support please contact:

e-mail: support@audiocodes.com

In the US, fax 408-577-0492

In other countries, fax +972-3-539-4041

This document is subject to change without notice.

Date Publishe : Mar-22-2000 Date Printe : Mar-22-2000

General Warranty.

Au ioCo es Lt . (hereinafter "Au ioCo es") warrants that its Pro ucts (hereinafter "Pro ucts") shall

conform to Au ioCo es’ publishe specifications for a perio of one (1) year. The foregoing warranty

oes not apply to any Pro ucts which have been subject to misuse, neglect, acci ent, or mo ification or

which have been altere an are not capable of being teste by Au ioCo es un er its normal test

con itions. Au ioCo es’ sole obligation to the Purchaser (hereinafter "Buyer") hereun er for Pro ucts

failing to meet the aforesai warranty shall be, at Au ioCo es' iscretion, to replace the non-conforming

Pro ucts or issue the Buyer cre it for the purchase price of the non-conforming Pro ucts, where within

the warranty perio : 1) Au ioCo es has receive written notice of any nonconformity; an 2) After

Au ioCo es' written authorization to o so the Buyer has returne the non-conforming Pro ucts to

Au ioCo es, freight prepai ; an 3) Au ioCo es has etermine that the Pro ucts are non-conforming

an that such nonconformity is not a result of the Buyer’s con uct. No Pro ucts may be use in a life

support application. Au ioCo es warrants that the Pro ucts sol hereun er shall at the time of shipment

be free an clear of liens an encumbrances. This warranty exten s to the Buyer only an may be invoke

by the Buyer for its customers. Au ioCo es shall not accept warranty returns irectly from the Buyer’s

customers or users of the Buyer’s pro ucts or evices. This warranty is in lieu of all other warranties

whether express, implie or statutory inclu ing implie warranties of merchantability or fitness for

particular purpose. Au ioCo es shall not be liable for amages ue to elays in eliveries or use. In no

event shall Au ioCo es be liable for any inci ental or consequential amages ue to breach of this

warranty or for any infringement action initiate by a thir party. The Buyer’s sole reme y for any breach

shall be limite to the reme ies set forth herein an shall not excee the sale price for the Pro ucts.

AC4830xC-C Data Book Contents

Revision 1.0 3 March 2000

Table of Contents

1 Introduction 7

1.1 Overview.....................................................................................................................7

1.2 Features.......................................................................................................................8

2 Functional Description 11

2.1 Overview...................................................................................................................11

2.2 Interfaces...................................................................................................................13

2.2.1 Voice Interface................................................................................................14

2.2.2 PCM Clock Generator.....................................................................................15

2.2.2.1 Examples of External Crystal Use:........................................................16

2.2.3 Host Port Interface ..........................................................................................17

2.2.4 Memory, I/O an CAS Interface......................................................................19

2.2.5 Channel Associate Signaling Port..................................................................21

2.2.6 Test Access Port..............................................................................................23

2.3 HPI on-chip Memory Map .........................................................................................24

2.4 Pin Description ..........................................................................................................25

2.4.1 Signals an Pin-out 144-pin TQFP package .....................................................25

3 Chip Data and Timing 31

3.1 General Specifications ...............................................................................................31

3.2 Electrical Characteristics an Operating Con itions.................................................... 32

3.2.1 Absolute Maximum Ratings over Specifie Temp. Range................................32

3.2.2 Electrical Characteristics.................................................................................34

3.3 Timing Characteristics ...............................................................................................35

3.3.1 Memory an I/O Interface Timing ...................................................................35

3.3.1.1 Memory Rea ....................................................................................... 35

3.3.1.2 Memory Write......................................................................................37

3.3.1.3 General I/O Rea Timing .....................................................................38

3.3.1.4 I/O Write Timing..................................................................................39

3.3.2 PCM Port Timing when External Co ec Use ................................................. 40

3.3.2.1 PCM Port Receive Timing (using Co ec) .............................................40

3.3.2.2 PCM Port Transmit Timing (using Co ec) ............................................41

3.3.3 PCM Port Timing with Clock from PCM Framer.............................................43

3.3.3.1 PCM Port Receive Timing (using PCM Framer) ...................................43

3.3.3.2 PCM Port Transmit Timing (using PCM Framer) ....................................44

3.3.4 Host Port Interface Timing ..............................................................................45

3.3.4.1 Host Port Interface Switching Characteristics........................................45

3.3.4.2 Host Port Interface Timing Requirements .............................................46

3.3.5 Reset Timing ..................................................................................................50

3.3.6 External Crystal Option ...................................................................................51

3.4 Packaging Specifications............................................................................................52

4 Applications 53

Au ioCo es Lt .

AC4830xC-C VoPP 4 Catalog Number: LTRT-00060

4.1 Interface Application Using PCM Framer/Co ec ........................................................53

4.2 Interface Application Using Co ec .............................................................................55

5 PCM Highway Interface 57

5.1 E1 PCM Highway ......................................................................................................57

Index....... 59

AC4830xC-C Data Book Contents

LIST OF FIGURES

Revision 1.0 5 March 2000

Figure 1-1: AC4830xC-C Chip.................................................................................................................... 7

Figure 2-1: AC4830xC-C Application Diagram for Each Channel .............................................................. 12

Figure 2-2: AC4830xC-C Interface Diagram.............................................................................................. 13

Figure 2-3: AC4830xC-C Voice an Signaling Interface ............................................................................14

Figure 2-4: PLLMUL Register Contents.................................................................................................... 15

Figure 2-5: AC4830xC-C Host Port Interface (HPI) Signals ....................................................................... 17

Figure 2-6: AC4830xC-C Memory & I/O Interface Signals ........................................................................ 19

Figure 2-7: AC4830xC-C CAS Port Interface ............................................................................................ 21

Figure 2-8: E&M AB Signaling ................................................................................................................. 21

Figure 2-9: AC4830xC-C Test Access Port Interface.................................................................................. 23

Figure 2-10: AC4830xC-C HPI Memory Map............................................................................................ 24

Figure 3-1: Memory Rea Timing ............................................................................................................. 36

Figure 3-2: Memory Write Timing............................................................................................................. 37

Figure 3-3: I/O Rea Timing ..................................................................................................................... 38

Figure 3-4: I/O Write Timing ....................................................................................................................39

Figure 3-5: PCM Port Receive Timing Requirements (using Co ec)........................................................... 41

Figure 3-6: PCM Port Transmit Timing Requirements (using Co ec).......................................................... 42

Figure 3-7: PCM Port Receive Timing (using PCM Framer)....................................................................... 43

Figure 3-8: PCM Port Transmit Timing (using PCM Framer) .....................................................................44

Figure 3-9: Rea /Write Access Without HRDY or HAS-............................................................................ 47

Figure 3-10: Rea /Write Access Using HAS- Without HRDY.................................................................... 48

Figure 3-11: Rea /Write Access with HRDY ............................................................................................. 49

Figure 3-12: HRDY Signal when HCS- is Always Low.............................................................................. 50

Figure 3-13: Reset Timing......................................................................................................................... 51

Figure 3-14: Internal Clock Option............................................................................................................ 51

Figure 3-15: TQFP Packaging Specifications ............................................................................................. 52

Figure 4-1: Typical Interface Application (Framer/Co ec).......................................................................... 54

Figure 4-2: Typical Interface Application (Co ec)...................................................................................... 56

Figure 5-1: E1 Timing............................................................................................................................... 57

Au ioCo es Lt .

AC4830xC-C VoPP 6 Catalog Number: LTRT-00060

List of Tables

Table 1-1: Available Features ..................................................................................................................... 9

Table 2-1: External Crystal Examples.........................................................................................................16

Table 2-2: HPI On-chip DPR Registers ......................................................................................................25

Table 2-3: AC4830xC-C Signals an Pin-out TQFP Package (continues on 6 pages) ...................................25

Table 3-1: General Specifications (continues on 2 pages)............................................................................31

Table 3-2: Characteristics over Recommen e Operating Con itions..........................................................33

Table 3-3: Electrical Characteristics...........................................................................................................34

Table 3-4: Memory Rea Timing Requirements .........................................................................................35

Table 3-5: Memory Write Timing Requirements.........................................................................................37

Table 3-6: I/O Rea Timing Parameters .....................................................................................................38

Table 3-7: I/O Write Timing Parameters.....................................................................................................39

Table 3-8: PCM Port Receive Timing Requirements (using Co ec).............................................................40

Table 3-9: PCM Port Transmit Switching Characteristics (using Co ec)......................................................41

Table 3-10: PCM Port Transmit Timing Requirements (using Co ec) .........................................................41

Table 3-11: PCM Port Receive Timing (using PCM Framer).......................................................................43

Table 3-12: PCM Port Transmit Switching Characteristics (using PCM Framer)..........................................44

Table 3-13: PCM Port Transmit Timing (using PCM Framer).....................................................................44

Table 3-14: Host Port Interface Switching Characteristics...........................................................................45

Table 3-15: Host Port Interface Timing Requirements.................................................................................46

Table 3-16: Timing Parameters for Reset....................................................................................................50

Table 3-17: TQFP Thermal Resistance Characteristics................................................................................52

AC4830xC-C Data Book Chapter 1. Intro uction

Revision 1.0 7 March 2000

1 INTRODUCTION

1.1 Overview

The AC4830xC-C Voice over Packet Processors are state-of-the-art systems on a single

chip. They provi e configurable, low-bit-rate voice compression an fax relay functions

for one or two in epen ent voice an fax channels.

There are currently two members of the AC4830xC-C family:

• AC48302C-C - ual channels for client applications

• AC48301C-C - single channel for client applications.

Figure

1-1: AC4830xC-C Chip

ADVANTAGES

• Low cost

• In epen ent channel operation

• Toll quality voice compression

• Robust ban wi th-saving fax relay

• Small footprint

• Low power consumption

Au ioCo es Lt .

AC4830xC-C VoPP 8 Catalog Number: LTRT-00060

APPLICATIONS

• Cable telephony access evices

• SOHO voice/ ata access evices

• DSL access evices

• Voice enable set-top boxes

1.2 Features

• 1 or 2 channels of G.729A, G.723.1, G.727, G.726, G.711 an NetCo er® voice

co ecs

• T.38 or FRF.11 compliant fax relay at 2.4 – 14.4 kbps

• Caller ID generation an etection

• Automatic switching to PCM or ADPCM upon fax/ ata etection

• G.168-compliant 25 ms length, a aptive Echo Canceler

• High performance Voice Activity Detector (VAD) an Comfort Noise Generator

(CNG)

• DTMF etection an generation

• Call Progress an User- efine tones etection an generation

• Clock an Frame Synchronization outputs to an external co ec

• Parallel host processor interface

• Selectable µ-law/A-law PCM co ec interface

• PCM highway interface for voice, fax an ata

• Input an output gain control

• E&M an AB signaling options

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