
LM4949
表7. 32级音量控制
成交量步骤
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
MG4/LG4/RG4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
MG3/LG3/RG3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
MG2/LG2/RG2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
MG1/LG1/RG1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
MG0/LG0/RG0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
增益(dB )
–57
–49
–42
–34.5
–30.5
–27
–24
–21
–18
–15
–13.5
–12
–10.5
–9
–7.5
–6
–4.5
–3
–1.5
0
1.5
3
4.5
6
7.5
9
10.5
12
13.5
15
16.5
18
表8.扬声器增益设置
LSRG1/LSLG1
0
0
1
1
LSRG0/LSLG0
0
1
0
1
表9.耳机增益设置
HPG1
0
0
1
HPG0
0
1
0
增益(dB )
0
–6
–12
增益(dB )
_IN + ≠ _IN-
12
10
8
6
_IN + = _IN-
6
4
2
0
37
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