Digital Voice Systems AMBE-3000 Specifications Page 78

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AMBE-3000F™ Vocoder Chip Users Manual
Version 3.4, April, 2014
Dat
a and Configuration Packets
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-3000F™ Vocoder Chip will switch from packet mode to
codec mode.
PKT_CODECSTART Response Field - Format
Field Identifier Response Field Data
1 Byte 1 Byte
0x2A
0x00
(anything different indicates error)
Table 58 PKT_CODECSTART Response Field Format
PKT_CODECSTOP field (1 byte) this will switch the AMBE-3000F™ Vocoder Chip from codec mode to packet mode and
the codec reset signal is set low. After entering packet mode the AMBE-3000F™ Vocoder Chip will stop outputting packets
containing channel data every 20ms.
PKT_CODECSTOP Field - Packet Format
Field Identifier Control Field Data
1 Byte 0 Byte
0x2B No Data Needed
Table 59 PKT_CODECSTOP Field
PKT_CODECSTOP field (1 byte total) Indicates that the AMBE-3000F™ Vocoder Chip will stop outputting channel data
packets.
PKT_CODECSTOP Response Field - Format
Field Identifier Response Field Data
1 Byte 1 Byte
0x2B
0x00
(anything different indicates error)
Table 60 PKT_CODECSTOP Response Field Format
PKT_CHANFMT field (3 bytes total) this field will set the format of the channel packets output from the AMBE-3000F™
Vocoder Chip.
PKT_CHANFMT Field - Format
Field Identifier Control Field Data
1 Byte 2 Bytes
15|14 13|12 11|10 9|8 7|6 5|4 3|2 1|0
(Subject to Change) Page 68
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