Digital Voice Systems AMBE-3000 Specifikace Strana 95
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Hodnocené. / 5. Na základě hodnocení zákazníků
AMBE-3000F™ Vocoder Chip Users Manual
Version 3.4, April, 2014
Dat
a and Configuration Packets
008100820083008400850086008700880089008A008
B008C008D008E008F00900091009200930094009500
96009700980099009A009B009C009D009E009F
Table 111 Speech Packet Example 1
The first byte (0x61) is the packet header byte. The next two bytes (0x0144) specify the total length of the packet fields is 324
bytes. Note that the total packet length including the header, length,, and type is 328 bytes. The next byte (0x02) specifies that
the packet type is a speech packet. The next byte (0x40) is the field identifier for a ChannelID field. The next byte (0x00) is a
SPEECHD field identifier and the following byte (0xA0) tells the AMBE-3000F™ Vocoder Chip that the SPEECHD Data
field contains 160 speech samples, occupying 320 bytes. The final 320 bytes contain the speech samples. For this particular
example the speech samples increment from 0 to 159. Note that the MS byte of each sample is transmitted/received prior to
the LS byte of each sample. This convention is used whenever a 16-bit number is contained in a packet.
Also note that the default vocoder number, if no VOCODERID fields occur in the packet, is vocoder 0. So for this example,
since vocoder 0 is specified in the VOCODERID field, the VOCODERID field could have been omitted.
6.11.2 Speech Packet Example 2
The following packet is another example of speech input
Speech Packet
Header
VOCODER
ID Field
SPEECHD Field
CMODE
Field
TONE Field
StartByte
Length
Type
VOCODERID
Field Identifier
SPEECHD Field identifier
SPEECHD No. of Samples
SPEECHD Data
CMODE Field identifier
CMODE flags
TONE Field identifier
TONE Index Value
TONE Amplifier Value
61 0149 02 40 00 A0 000000010002000300040
005000600070008000900
0A000B000C000D000E000
F00100011001200130014
001500016017001800190
01A001B001C001D001E00
1F0020002100220023002
400250026002700280029
002A002B002C002D002E0
02F003000310032003300
340035003600370038003
9003A003B003C003D003E
003F00400041004200430
044004500460047004800
02 0000 08 03 00
(Subject to Change) Page 85
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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