Table 44. A-Law Encode-Decode Characteristics
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Si3220/25 Si3200/02
Rev. 1.3
83
Not
Recommended
fo
r N
ew
D
esi
gn
s
Table 44. A-Law Encode-Decode Characteristics1,2
Segment
Number
#intervals X interval size
Value at segment endpoints
Digital Code
Decode Level
7
16 X 128
4096
3968
.
2176
2048
10101010b
10100101b
4032
2112
6
16 X 64
.
1088
1024
10110101b
1056
5
16 X 32
.
544
512
10000101b
528
4
16 X 16
.
272
256
10010101b
264
3
16 X 8
.
136
128
11100101b
132
2
16 X 4
.
68
64
11110101b
66
1
32 X 2
.
2
0
11010101b
1
Notes:
1.
Characteristics are symmetrical about analog zero with sign bit = 0 for negative values.
2.
Digital code includes inversion of even-numbered bits. Other available formats include inversion of odd bits, inversion
of all bits, or no bit inversion. See "3.30. PCM Companding" on page 80 for more details.
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