AMBE2000 datasheet(5/47 Pages) ETC

5 / 47 page

AMBE-2000™ Vocoder Chip

User’s Manual Version 3.0

page 5

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Confidential Proprietary, Subject to Change

5.2.8

Formatted Input : Word 10 :DTMF Control

5.2.9

Formatted Input : Word 11 Control Word 2

5.2.10

Formatted Input : Words 12-23 : Channel Data

5.3

Formatted Output Format

5.3.1

Formatted Output : Word 0 : Header

5.3.2

Formatted Output : Word 1 : ID (Power Control)

5.3.3

Formatted Output : Word 1 :Control Word 1

This 8-bit control word indicates the activity of various functions.

5.3.4

Formatted Output : Words 2-6 : Rate Info 0, Rate Info 1, Rate Info 2, Rate Info 3, Rate Info 4.

5.3.5

Formatted Output: Word 7 : Bit Error Rate

5.3.6

Formatted Output : Word 10 : DTMF Control

5.3.7

Formatted Output : Word 11 :Control Word 2

5.3.8

Formatted Output : Words 12-23 :Channel Data

5.4

Unformatted Serial Format

5.4.1

Unformatted Serial Output Format

5.4.2

Unformatted Serial Input Format

6 A/D-D-A Interface

6.1

A/D-D/A Overview

6.2

Configuring the A/D-D/A Interface using CODEC_SEL[1-0]

6.3

Low Level A/D–D/A Timing

Low Level Timing for A/D-D/A in Active and Passive Modes

7 Special Functions

7.1

Hardware vs. Software Selection Note

7.2

Coding Rate Selection

7.3

Echo Cancellation

7.4

Voice Activation Detection (VAD), Comfort Noise Insertion (CNI)

7.5

Dual Tone Multiple Frequency, Detection and Generation

7.6

Normal Power and Power Saving Modes

7.6.1

Standard Sleep Mode

7.6.2

Power Down

7.7

Slip Enable

8 Appendices

8.1

Example A/D-D/A Usage

8.1.1

AD73311

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