W682510_05 Datasheet, PDF (28/35 Pages) Winbond – DUAL-CHANNEL VOICEBAND CODECS

W682510/W682310
Level
+ Full Scale
+ Zero
- Zero
- Full Scale
Sample
1
2
3
4
5
6
7
8
TABLE 10.63: PCM CODES FOR ZERO AND FULL SCALE
μ-Law
A-Law
Sign bit Chord bits Step bits
Sign bit Chord bits
(D7) (D6,D5,D4) (D3,D2,D1,D0) (D7) (D6,D5,D4)
1
000
0000
1
010
1
111
1111
1
101
0
111
1111
0
101
0
000
0000
0
010
Step bits
(D3,D2,D1,D0)
1010
0101
0101
1010
TABLE 10.64: PCM CODES FOR 0DBM0 OUTPUT
μ-Law
A-Law
Sign bit Chord bits Step bits
Sign bit Chord bits
(D7) (D6,D5,D4) (D3,D2,D1,D0) (D7) (D6,D5,D4)
0
001
1110
0
011
0
000
1011
0
010
0
000
1011
0
010
0
001
1110
0
011
1
001
1110
1
011
1
000
1011
1
010
1
000
1011
1
010
1
001
1110
1
011
Step bits
(D3,D2,D1,D0)
0100
0001
0001
0100
0100
0001
0001
0100
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