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AMBE-3000F™ Vocoder Chip Users Manual
Version 3.4, April, 2014
IC Chi
p Software Errata
Allo
w the use of TXRQST signal for skew control, when the number of samples in a
frame is less than 160.
Call Progress tones work around based on rate.
Release 007 09/10/2009
Release 007 Improves the quality of single frequency tones and call progress tones for
AMBE-1000™ Vocoder Chip compatible rates.
In Release 007 the FEC error mitigation thresholds are set properly regardless of the
order the PKT_RATE(T/P) and PKT_INIT fields are sent. When an FEC rate is selected
via the rate configuration pins, the error mitigation thresholds are also set to the
appropriate value for the selected FEC.
In prior releases, PKT_INIT resets the FEC error mitigation thresholds to 0. Therefore,
after sending PKT_INIT it is always necessary to send PKT_RATET or PKT_RATEP to
set the error mitigation thresholds to the appropriate value for the selected FEC. For
prior releases, if FEC is used, it is necessary to send PKT_RATET or PKT_RATEP in
order for the FEC error mitigation thresholds to be set properly. In Release 007, it is not
necessary to send PKT_RATET or PKT_RATEP when FEC is used.
For Release 007, packet parity bytes can be disabled at reset using the parity enable pin.
Parity can also be disabled using a soft-reset packet (using a PKT_RESETSOFTCFG
field) to specify that parity should be disabled.
The parity enable pin can be used to disable parity bytes. This feature was not available
in Release 005.
Release 014 08/31/2012
Product ID = <AMBE3000F>
Version String = <V121.E100.XXXX.C110.G514.R014.A0030608.C0020208>
Skew Control
. In Release 014, the Skew Control works as described in this manual. This
affects customers using codec mode who are using TXRQST to control frame
boundaries. No simple workaround is available for older releases.
MCBSP Initialization modification
. In Release 014, the MCBSP initialization is properly
synchronized with the frame sync signal. This only affects customers who are using
codec mode and who have selected the MCBSP as the codec interface. Workarounds are
available for older releases.
SPI @ 128 KHz modification.
Release 014, resolves the issue of glitches in some
decoder output samples when running the SPI @ 128 KHz. This affects customers who
are using codec mode and have selected the SPI as the codec interface. A workaround is
available for older releases.
cmode LOST_FRAME bit ignored.
In this Release 014, the cmode LOST_FRAME bit
works as described in this manual. In prior releases the only way to cause a frame repeat
was to omit a packet. This affects customers who are using codec mode and who use the
cmode LOST_FRAME bit to make the decoder do a frame repeat.
(Subject to Change) Page 98
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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