Specifications

AMBE-3000™ Vocoder Chip Users Manual
Version 2.8, August, 2011
Dat
a and Configuration Packets
Table 110 TONE Field Format
6.10 Output Channel Packet Format (Packet Type 0x01)
A channel packet (packet type 0x01) is output from the AMBE-3000™ Vocoder chip, whenever the chip receives an input
speech packet (packet type 0x02). The format of the output channel packet can be configured using PKT_CHANFMT
control field see Table 61 PKT_CHANFMT Field.
6.11 Example Packets
6.11.1 Speech Packet Example 1
The simplest way to operate the AMBE-3000™ Vocoder Chip in packet mode is to send it a packet and then wait for a
response packet. But using this method, the vocoder is idle during the time when a packet is being received by the
AMBE-3000™ Vocoder Chip and during the time in which the AMBE-3000™ Vocoder Chip is transmitting the response
packet.
Following is an example speech packet (hexadecimal) for input to the AMBE-3000™ Vocoder Chip:
Speech Packet
Header
CHANNEL
Field
SPEECHD Field
StartByte Length Type CHANNEL0 field identifier SPEECHD field identifier SPEECHD No. of Samples SPEECHD Data
61 0144 02 40 00 A0 0000000100020003000400050006000700080009000
A000B000C000D000E000F0010001100120013001400
150001601700180019001A001B001C001D001E001F0
020002100220023002400250026002700280029002A
002B002C002D002E002F00300031003200330034003
50036003700380039003A003B003C003D003E003F00
40004100420043004400450046004700480049004A0
04B004C004D004E004F005000510052005300540055
0056005700580059005A005B005C005D005E005F006
0006100620063006400650066006700680069006A00
6B006C006D006E006F0070007100720073007400750
076007700780079007A007B007C007D007E007F0080
008100820083008400850086008700880089008A008
B008C008D008E008F00900091009200930094009500
96009700980099009A009B009C009D009E009F
(Subject to Change) Page 76
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