SI3225-FQ Datasheet, PDF (78/108 Pages) Silicon image – DUAL PROSLIC® PROGRAMMABLE CMOS SLIC/CODEC

Si3220/Si3225
Table 42. A-Law Encode-Decode Characteristics^1,2
Segment #intervals X interval size Value at segment endpoints Digital Code
Number
Decode Level
7
16 X 128
4096
3968
.
.
2176
2048
10101010b
4032
10100101b
2112
6
16 X 64
.
.
.
1088
1024
10110101b
1056
5
16 X 32
.
.
.
544
512
4
16 X 16
.
.
.
272
256
10000101b
528
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 "PCM Companding" on page 75 for more details.
78
Rev. 1.0