Digital Voice Systems AMBE-2020, User Manual

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AMBE-2000™ Vocoder Chip Users Manual
Version 4.92, June, 08
DVSI Confidential Proprietary, Subject to Change Page 64
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History of Revisions
Revision
Number
Date of
Revision
Description Pages
1.0 November 1999 Initial Version
Pin descriptions 11-12
Serial Configuration Selection 19
Channel Serial Interface Pin Descriptions 20
1.1 April 2000
Table 6-A CODEC_SEL[1-0]:
A/D- D/A Hardware Configuration Values
35
1.2 August Added AD73311 to AMBE-2020™ connection diagram 42
Pin Description : ENCODER_EN is pin 24. 11
Corrections of Table 4A and 4B 19
Clarification on VAD 28
Expanded description of Control Word 1 30
Table 5-M added DTMF Code 0xff 32
1.3 October
Channel and Codec Timing Diagrams and Tables 21, 22, 36, 37
Table 4B Corrected (pin 80 and 81) 19
1.4 November 2000
Added Note describing H 22, 37
2.0 January 2001 Clarified/corrected the following pages.
10, 11, 12, 13,
16, 17, 21, 22,
23, 27, 28, 29,
32, 34, 36, 37,
39
2.1 February 2001 Updated Timing Diagrams and Tables for Channel and Codec 21, 22, 36, 37
Changed Pin Description CLK_I to X2/CLKIN and CLK_I2 to X1 11
Updated timing diagram and table for X2/CLKIN and RESETN 13, 14 2.2 February 2001
Replaced …set the DTMF Code to 0x00 to …set the DTMF Code to 0xff 27
Updated company address 2
Removed description of Decoder Output Volume Control 28
Modified SLEEP_EN Section 7.5.1 40
Modified description of EPR 11, 12, 20
Added Detailed Explination of Slip Enable Control 42, 43
3.0 August 2001
Added description of Decoder Silence Detect, Decoder Frame Repeat
and Encoder DTMF Detect bits
30
Various grammer changes 43
Vad Threshold Explination 41
Associated Delay 14
Front End Requirements 9
Added AD73311AR Configuration Words 46
Added Tech Note 8.2 47
4.0 January 2003
Expanded DTMF Tone Chart 30, 34
4.1 April 2004 Added additional rate control words in Table 5-D 29
4.2 June 2004 Added tech note to Appendices section 8.7 60
4.3 February 2005
Added Decoder output volume control description section 5.2.9
Removed blank section 5.2.10
31
4.4 April 2005 Added Figure 3-G and text to section 3.6 20