Specifications

AMBE-3000™ Vocoder Chip Users Manual
Version 2.8, August, 2011
Dat
a and Configuration Packets
Th
e PKT_RESET field does not return a Response field; however, the AMBE-3000™ Vocoder Chip does output a
PKT_READY packet after every reset (including both hard resets and packet resets). The PKT_READY packet can therefore
be viewed as a response packet to the packet containing a PKT_RESET field.
PKT_RESETSOFTCFG field (7 bytes total) this field will cause the AMBE-3000™ Vocoder Chip to be reset. As a result,
the AMBE-3000™ Vocoder Chip will lose all prior configuration settings and reset itself to the default power up state. This is
similar to PKT_RESET; however the hardware configuration pins can be overridden by the settings specified by the packet.
The PKT_RESETSOFTCFG packet contains 6 additional bytes of data which specify the settings for the 24 configuration pins.
CFG0 – CFG2 specify the software settings for each of the 24 configuration pins. MASK0-MASK2 specify whether the
hardware setting or the software setting for each pin is used. If all The MASK bits are 0, then no software configuration is
used and the packet behaves the same as a PKT_RESET packet (all the configuration settings come from the hardware pins at
reset). If all the MASK bits are 1, then all the configuration pins are ignored upon the resulting reset and replaced with the
configuration specified by CFG0 – CFG2. It is possible to individually mask the bits and select some configuration to come
from hardware pins and some configuration to come from CFG0-CFG2.
CFG Byte Bit Configuration Description Pin Number
TQFP BGA
0 (LSB) IF_SELECT0 2 C2
1 IF_SELECT1 3 C3
2 IF_SELECT2 4 B1
3 DTX_ENABLE 5 C1
4 SK_ENABLE 6 D3
5 NS_ENABLE 7 D2
6 CP_ENABLE 8 D1
CFG0
7 (MSB) CP_SELECT 9 F5
0 (LSB) RATE0 126 A3
1 RATE1 125 D4
2 RATE2 124 C4
3 RATE3 123 B4
4 RATE4 122 A4
5 RATE5 121 E5
6 EC_ENABLE 120 D5
CFG1
7 (MSB) ES_ENABLE 119 B5
0 (LSB) S_COM_RATE0 89 E13
1 S_COM_RATE1 90 E11
2 S_COM_RATE2 91 F10
3 Reserved
4 PARITY_ENABLE 79 H11
5 Reserved
6 Reserved
CFG2
7 (MSB) Reserved
Table 74 Software Override of Hardware Configuration Pins
For more information regarding configuration pins refer to Table 2 Hardware Configuration Settings
PKT_RESETSOFTCFG Field - Format
Control Field Data
Field Identifier
CFG0 CFG1 CFG2 MASK0 MASK1 MASK2
1 Byte 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte
0x34
(Subject to Change) Page 65
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