AMBE2000 Datasheet, PDF (5/47 Pages) List of Unclassifed Manufacturers – VOCODER CHIP

AMBE-2000™ Vocoder Chip
User’s Manual Version 3.0
5.2.8 Formatted Input : Word 10 :DTMF Control
27
5.2.9 Formatted Input : Word 11 Control Word 2
28
5.2.10 Formatted Input : Words 12-23 : Channel Data
29
5.3 Formatted Output Format
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5.3.1 Formatted Output : Word 0 : Header
30
5.3.2 Formatted Output : Word 1 : ID (Power Control)
30
5.3.3 Formatted Output : Word 1 :Control Word 1
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This 8-bit control word indicates the activity of various functions.
30
5.3.4 Formatted Output : Words 2-6 : Rate Info 0, Rate Info 1, Rate Info 2, Rate Info 3, Rate Info 4. 30
5.3.5 Formatted Output: Word 7 : Bit Error Rate
30
5.3.6 Formatted Output : Word 10 : DTMF Control
30
5.3.7 Formatted Output : Word 11 :Control Word 2
32
5.3.8 Formatted Output : Words 12-23 :Channel Data
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5.4 Unformatted Serial Format
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5.4.1 Unformatted Serial Output Format
33
5.4.2 Unformatted Serial Input Format
34
6 A/D-D-A Interface
35
6.1 A/D-D/A Overview
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6.2 Configuring the A/D-D/A Interface using CODEC_SEL[1-0]
35
6.3 Low Level A/D–D/A Timing
36
Low Level Timing for A/D-D/A in Active and Passive Modes
36
7 Special Functions
38
7.1 Hardware vs. Software Selection Note
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7.2 Coding Rate Selection
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7.3 Echo Cancellation
39
7.4 Voice Activation Detection (VAD), Comfort Noise Insertion (CNI)
40
7.5 Dual Tone Multiple Frequency, Detection and Generation
40
7.6 Normal Power and Power Saving Modes
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7.6.1 Standard Sleep Mode
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7.6.2 Power Down
41
7.7 Slip Enable
42
8 Appendices
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8.1 Example A/D-D/A Usage
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8.1.1 AD73311
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page 5
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