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AMBE-3000F™ Vocoder Chip Users Manual
Version 3.4, April, 2014
Dat
a and Configuration Packets
PKT_
COMPAND Response field (1 byte total) indicates compand command was received.
PKT_COMPAND Response Field - Format
Field Identifier Response Field Data
1 Byte 1 Byte
0x32
0x00
(anything different indicates error)
Table 41 PKT_COMPAND Response Field Format
PKT_RATET field (2 bytes total) specifies one of the built-in rates. Sets a built-in Rate from Table 115 Rate Index Numbers
PKT_RATET Field - Format
Field Identifier Control Field Data
1 Byte 1 Byte
0x09 Rate Index Value From Table 115 Rate Index Numbers
Table 42 PKT_RATET Field Format
PKT_RATET Response field (1 byte total) indicates receipt of a rate field.
PKT_RATET Response Field - Format
Field Identifier Response Field Data
1 Byte 1 Byte
0x09
0x00
(anything different indicates error)
Table 43 PKT_RATET Response Field Format
The rate of the AMBE-3000F™ Vocoder Chip can be set through hardware pins or control words. After resetting the device,
the coding rate can be modified for both the encoder and the decoder by sending a PKT_RATET or PKT_RATEP packet.
Table 116 Rate Control Words and Pin Settings shows standard Rate / FEC combinations
The
AMBE-3000F™ Vocoder Chip uses these six words to set the source and FEC coding rates. Table 115 Rate Index
Num
bers and Table 116 Rate Control Words and Pin Settings lists the predefined values for various source and FEC rates that
are
built into the AMBE-3000F™ Vocoder Chip. These tables also indicate what rates are compatible with older DVSI
vocoder chips such as the AMBE-2000™ Vocoder Chip (using AMBE™+ technology) and the AMBE-1000™ Vocoder Chip
(using AMBE™ technology). These are a representation of the most commonly requested rates. Please contact DVSI for
additional rate information if the desired rates are not listed.
PKT_RATEP field (13 bytes total) Custom Rate words
If rates other than those indicated in Table 115 Rate Index Numbers and Settings are desired then the PKT_RATEP field must
be
used to specify a custom rate.
PKT_RATEP - Field Format
Field Identifier Control Fields Data
1 Byte Rate Control Words (6 Words)
0x0A RCW 0 RCW 1 RCW 2 RCW 3 RCW 4 RCW 5
Table 44 PKT_RATEP Field Format
(Subject to Change) Page 64
DVSI CONFIDENTIAL PROPRIETARY
- AMBE-3000F™ Vocoder Chip 1
- DVSI Confidential Proprietary 1
- (Subject to Change) Page v 5
- (Subject to Change) Page x 10
- 1 Product Introduction 11
- 1.3 Typical Applications 12
- 2 Hardware Information 13
- 2.2 Package Details 14
- (Subject to Change) Page 5 15
- 2.3 Pin Assignment Layouts 16
- A B C D E F G H J K L M N P 17
- (Subject to Change) Page 8 18
- (Subject to Change) Page 9 19
- 2.5 Pin Out Table 20
- PARITY_ENABLE 79 22
- Input Enable parity bit 22
- Table 1 Pinout List 26
- 2.7.1 External Clock Source 29
- 2.7.2 Crystal Oscillator 29
- Table 7 Voltage Supply Pins 32
- 3.6 Reset Behavior 33
- Figure 11 TX_RDY after Reset 34
- Figure 12 Output Levels 34
- 3.8 Power-Down Sequencing: 35
- 3.9 Low Power Modes 35
- 3.9.1 Run State 36
- 3.9.2 Idle State 36
- 3.9.3 Standby State 36
- 3.9.4 Halt State 36
- 3.9.5 Power Modes 37
- 4.2 Interface Selection 40
- 4.4 Vocoder State 41
- Figure 18 Typical Echo Path 43
- Table 11 Companding Control 44
- 5 I/O Management 45
- Table 13 ECMODE_IN Flags 46
- Table 14 ECMODE_OUT FLAGS 46
- Table 15 DCMODE_IN Flags 47
- Table 16 DCMODE_OUT Flags 47
- 5.2 Codec mode 49
- “0 to Transition”“1” 51
- “Packet_ _Zone”Uncertainty 51
- “aperiodic packets” 52
- 5.3 Packet Mode 53
- Figure 29 Packet Mode 55
- 5.5 SPI Interface 56
- 5.6 UART Interface 57
- 5.7 McBSP Interface 58
- 5.8 Parallel Interface 61
- Table 26 PPT Timing 62
- Figure 36 Vocoder Front End 64
- Diagram 66
- 6.1 Overview 68
- 6.2 Codec Mode Operation 68
- 6.3 Packet Mode Operation 68
- 6.4 Packet Interfaces 69
- 6.5 Packet Format 69
- 6.5.3 TYPE (1 byte) 70
- 6.5.4 Packet Fields 70
- Table 59 PKT_CODECSTOP Field 78
- Table 61 PKT_CHANFMT Field 79
- samples dcmode 80
- Table 64 PKT_SPCHFMT Field 80
- 0x54 0x46 0x00 81
- Table 71 PKT_READY Field 82
- Table 72 PKT_HALT Field 82
- Table 73 PKT_RESET Field 82
- 6.7.1 Speech Packet Fields 89
- Table 100 CMODE Field Format 90
- Table 103 TONE Field Format 90
- 6.11 Example Packets 94
- 7 Appendices 98
- Table 115 Rate Index Numbers 100
- 8 Support 103
- Digital Voice Systems, Inc 104
- 10 IC Chip Software Errata 107
- Release 007 09/10/2009 108
- Release 014 08/31/2012 108
- 11 History of Revisions 109
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