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Digital Voice Systems AMBE-3000 Especificações Página 8

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AMBE-3000F™ Vocoder Chip Users Manual
Version 3.4, April, 2014
Figure 10 Cascading Resets................................................................................................ 23
Figure 11 TX_RDY after Reset............................................................................................. 24
Figure 12 Output Levels..................................................................................................... 24
Figure 13 Input Levels....................................................................................................... 25
Figure 14 AMBE-3000F™ Vocoder Chip Power States.............................................................. 25
Figure 15 Power Mode States Basic Timing ........................................................................... 26
Figure 16 Power Modes...................................................................................................... 27
Figure 17 Basic Operation .................................................................................................. 30
Figure 18 Typical Echo Path................................................................................................ 33
Figure 19 Switching between Packet and Codec Modes........................................................... 38
Figure 20 Codec Mode (SPI Interface).................................................................................. 39
Figure 21 Codec Mode (McBSP Interface) ............................................................................. 40
Figure 22 TX_RDY with Skew Control Off.............................................................................. 40
Figure 23 TX_RDY with Skew Control On.............................................................................. 41
Figure 24 TX_RDY Timing................................................................................................... 41
Figure 25 TX_RDY Frame Interval ....................................................................................... 41
Figure 26 TX_RDY Frame interval Examples.......................................................................... 42
Figure 27 Interface BLOCK Diagram Codec Mode................................................................... 43
Figure 28 Interface Block Diagram Packet Mode .................................................................... 44
Figure 29 Packet Mode....................................................................................................... 45
Figure 30 SPI Timing......................................................................................................... 46
Figure 31 Timing of SPI_GENSTE ........................................................................................ 47
Figure 32 Timing of McBSP When Selected as Codec Interface................................................. 49
Figure 33 Timing of McBSP when Selected as Packet Interface................................................. 50
Figure 34 PPT Interface Timing ........................................................................................... 52
Figure 35 Typical Vocoder Implementation ........................................................................... 53
Figure 36 Vocoder Front End .............................................................................................. 54
Figure 37 Front End Input Filter Mask .................................................................................. 54
Figure 38 Front End Output Filter Mask ................................................................................ 55
Figure 39 AMBE-3000F™ Vocoder Chip and TLV320AIC14 Interface Block Diagram..................... 56
Figure 40 AMBE-3000F™ Vocoder Chip and PCM3500 Interface Block Diagram .......................... 57
List of Tables
Table 1 Pinout List ............................................................................................................ 16
Table 2 Hardware Configuration Settings.............................................................................. 18
Table 3 Normal Operating Conditions................................................................................... 21
Table 4 Recommended Operating Conditions......................................................................... 21
Table 5 Absolute Maximum Ratings ..................................................................................... 22
Table 6 Thermal Resistance Characteristics........................................................................... 22
Table 7 Voltage Supply Pins................................................................................................ 22
Table 8 Typical AMBE-3000F™ Vocoder Chip Power Measurements........................................... 28
Table 9 Physical Interface Selection..................................................................................... 31
Table 10 Soft Decision Error Correction................................................................................ 33
Table 11 Companding Control............................................................................................. 34
Table 12 Companding Selection .......................................................................................... 34
Table 13 ECMODE_IN Flags................................................................................................ 36
Table 14 ECMODE_OUT FLAGS............................................................................................ 36
Table 15 DCMODE_IN Flags................................................................................................ 37
Table 16 DCMODE_OUT Flags............................................................................................. 37
Table 17 SPI Interface Pins ................................................................................................ 46
Table 18 SPI Timing.......................................................................................................... 47
Table 19 UART Interface Pins.............................................................................................. 47
(Subject to Change) Page viii
DVSI CONFIDENTIAL PROPRIETARY
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