Specifications

AMBE-3000™ Vocoder Chip Users Manual
Version 2.8, August, 2011
Dat
a and Configuration Packets
PKT_RATEP Response- Field Format
Field Identifier Response Field Data
1 Byte 0 Byte
0x0A No Data Needed
Table 46 PKT_RATEP Response Field Format
Vocoder Rate table with Rate - Control Words / Configuration Pin Setting are shown in Section Rate - Control Words /
Co
nfiguration Pin Settings
PKT_I
NIT field (2 bytes total) sets the ecmode and dcmode initialization flags for the encoder and the decoder respectively.
When bit 0 of byte 1 is set the encoder is initialized to the following:
 TONE_DET_ENABLE_FLAG is on
 Noise suppression is enabled/disabled depending on configuration pin
 Echo canceller and echo suppressor are enabled/disabled depending on configuration pin.
 Companding is enabled/disabled and the companding type is selected depending upon the configuration pins.
 All other bits in ecmode are initialized to zero.
When bit 1 of byte 1 is set the decoder is initialized to the following:
 Companding is enabled/disabled and the companding type is selected depending upon the configuration pins.
 All other bits in dcmode are initialized to zero.
When bits 0 and 1 of byte 1 are both set, the encoder and decoder are both initialized.
PKT_INIT Field - Format
Field Identifier Control Field Data
1 Byte 1 Byte
0x0B Table 48 PKT_INIT Field - Data
Table 47 PKT_INIT Field Format
Options for PKT_INIT Field
Description Value
Encoder Initialized 0x1
Decoder Initialized 0x2
Encoder and Decoder Initialized 0x3
Table 48 PKT_INIT Field - Data
PKT_INIT Response field (1 byte total) indicated receipt of encoder and/or decoder initialization.
PKT_INIT Response Field - Format
Field Identifier Response Field Data
1 Byte 0 Byte
0x0B No Data Needed
Table 49 PKT_INIT Response Field Format
PKT_LOWPOWER field (2 bytes)
(Subject to Change) Page 58
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