Specifications

AMBE-3000™ Vocoder Chip Users Manual

Version 2.8, August, 2011

Dat

a and Configuration Packets

0x38 0x05 0x01 0x41 0x02 0xA0 0x04 0x83 0x05 0xB8 0x06 0x20

Table 54 PKT_CODECCFG Field Example Data

PKT_CODECCFG field (1 byte total) Indicates that the AMBE-3000™ Vocoder Chip sent a configuration packet to the

Codec.

PKT_CODECCFG Response Field - Format

Field Identifier Response Field Data

1 Byte 0 Byte

0x38 No Data Needed

Table 55 PKT_CODECCFG Response Field Format

PKT_CODECSTART field (2 bytes total) this will switch the AMBE-3000™ Vocoder Chip from packet mode to codec

mode. It also causes the Codec Reset signal to be set. Then the codec configuration words that were set using the

PKT_CODECCFG field, are sent via the I

C pins. After entering Codec mode the AMBE-3000™ Vocoder Chip will output

packets containing channel data every 20ms. The channel data is obtained by encoding the speech samples received from the

selected codec interface.

PKT_CODECSTART Field - Packet Format

Field Identifier Control Field Data

1 Byte 1 Byte

0x2A See Table 57 PKT_CODECSTART Field Data

Table 56 PKT_CODECSTART Field Format

PKT_CODECSTART Flag Values

Value Description

Codec Interface Pass thru Skew Control

0x0 SPI Disabled Disabled

0x1 SPI Disabled Enabled

0x2 SPI Enabled Disabled

0x3 SPI Enabled Enabled

0x4 McBSP Disabled Disabled

0x5 McBSP Disabled Enabled

0x6 McBSP Enabled Disabled

0x7 McBSP Enabled Enabled

Table 57 PKT_CODECSTART Field Data

PKT_CODECSTART field (2 bytes) Indicates that the AMBE-3000™ Vocoder Chip will switch from packet mode to codec

mode.

PKT_CODECSTART Response Field - Format

Field Identifier Response Field Data

1 Byte 0 Byte

0x2A No Data Needed

Table 58 PKT_CODECSTART Response Field Format

(Subject to Change) Page 60

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