Soft Decision Error Decoding with the
AMBE-2000/2020 Vocoder Chips
page 2 of 2
Word #
Description
0
Header always set to 0x13EC
1
Power Control (8 bits)
Control Word 1 (8 bits)
2
Rate info 0
3
Rate info 1
4
Rate info 2
5
Rate info 3
6
Rate info 4
7 Unused
in
Input
8 Unused
in
Input
9 Unused
in
Input
10
DTMF Control
(12)
16 bit
words
of
o
verhead (1
9
2
bi
ts)
11
Control Word 2
12 SD0
SD1
SD2
SD3
13 SD4
SD5
SD6
SD7
14 SD8
SD9 SD10 SD11
15
SD12 SD13 SD14 SD15
16
SD16 SD17 SD18 SD19
17
SD20 SD21 SD22 SD23
18
SD24 SD25 SD26 SD27
19
SD28 SD29 SD30 SD31
20
SD32 SD33 SD34 SD35
21
SD36 SD37 SD38 SD39
22
SD40 SD41 SD42 SD43
23
SD44 SD45 SD46 SD47
24
SD48 SD49 SD50 SD51
25
SD52 SD53 SD54 SD55
26
SD56 SD57 SD58 SD59
27
SD60 SD61 SD62 SD63
28
SD64 SD65 SD66 SD67
29
SD68 SD69 SD70 SD71
30
SD72 SD73 SD74 SD75
31
SD76 SD77 SD78 SD79
32
SD80 SD81 SD82 SD33
33
SD84 SD85 SD86 SD87
34
SD88 SD89 SD90 SD91
35
SD92 SD93 SD44 SD95
36
SD96 SD97 SD98 SD99
37 SD100 SD101 SD102 SD103
38 SD104 SD105 SD106 SD107
39 SD108 SD109 SD110 SD111
40 SD112 SD113 SD114 SD115
41 SD116 SD117 SD118 SD119
42 SD120 SD121 SD122 SD123
43 SD124 SD125 SD126 SD127
44 SD128 SD129 SD130 SD131
45 Sd132 SD133 SD134 SD135
46 SD136 SD137 SD138 SD139
47 SD140 SD141 SD142 SD143
48 SD144 SD145 SD146 SD147
49 SD148 SD149 SD150 SD151
50 SD152 SD153 SD154 SD155
51 SD156 SD157 SD158 SD159
52 SD160 SD161 SD162 SD163
53 SD164 SD165 SD166 SD167
54 SD168 SD169 SD170 SD171
55 SD172 SD173 SD174 SD175
56 SD176 SD177 SD178 Sd179
57 SD180 SD181 SD182 SD183
58 SD184 SD185 SD186 SD187
20 ms frame
60 s
ixt
ee
n
-b
it
words
= 120 byt
es
= 960 bits
SD = 4 bit
s x 4 pe
r word = 16 bit
words
of dat
a x 48 words
= 768 bit
s
59 SD188 SD189 SD190 SD191
Table 1. Soft-Decision Decoder Packet
DVSI Confidential Proprietary
Copyright ©2002
