TLV320AIC3110_16 Datasheet, PDF (62/132 Pages) Texas Instruments – TLV320AIC3110 Low-Power Audio Codec With Audio Processing and Stereo Class-D Speaker Amplifier

TLV320AIC3110
SLAS647C – DECEMBER 2009 – REVISED MAY 2016
www.ti.com
Table 7-38. Analog Volume Control for Headphone and Speaker Outputs (for D7 = 1)⁽¹⁾
REGISTER
VALUE
(D6–D0)
0
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
ANALOG
GAIN (dB)
0
–0.5
–1
–1.5
–2
–2.5
–3
–3.5
–4
–4.5
–5
–5.5
–6
–6.5
–7
–7.5
–8
–8.5
–9
–9.5
–10
–10.5
–11
–11.5
–12
–12.5
–13
–13.5
–14
–14.5
REGISTER
VALUE
(D6–D0)
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
(1) Mute when D7 = 0 and D6–D0 = 127 (0x7F).
ANALOG GAIN
(dB)
–15
–15.5
–16
–16.5
–17
–17.5
–18.1
–18.6
–19.1
–19.6
–20.1
–20.6
–21.1
–21.6
–22.1
–22.6
–23.1
–23.6
–24.1
–24.6
–25.1
–25.6
–26.1
–26.6
–27.1
–27.6
–28.1
–28.6
–29.1
–29.6
REGISTER
VALUE
(D6–D0)
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
ANALOG GAIN
(dB)
–30.1
–30.6
–31.1
–31.6
–32.1
–32.6
–33.1
–33.6
–34.1
–34.6
–35.2
–35.7
–36.2
–36.7
–37.2
–37.7
–38.2
–38.7
–39.2
–39.7
–40.2
–40.7
–41.2
–41.7
–42.1
–42.7
–43.2
–43.8
–44.3
–44.8
REGISTER
VALUE
(D6–D0)
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117–127
ANALOG GAIN
(dB)
–45.2
–45.8
–46.2
–46.7
–47.4
–47.9
–48.2
–48.7
–49.3
–50
–50.3
–51
–51.4
–51.8
–52.2
–52.7
–53.7
–54.2
–55.3
–56.7
–58.3
–60.2
–62.7
–64.3
–66.2
–68.7
–72.2
–78.3
7.3.10.11.3 Class-D Speaker Analog Output Volume Control
For the speaker outputs, the analog volume control has a range from 0 dB to –78 dB in 0.5-dB steps for
most of the useful range plus mute, as seen in Table 7-38. The implementation includes soft-stepping
logic.
Routing the left-channel DAC output signal to the left-channel analog volume control is done by writing to
page 1 / register 35, bit D6. Routing the right-channel DAC output signal to the right-channel analog
volume control is done by writing to page 1 / register 35, bit D2. Changing the left-channel analog volume
for the speaker is controlled by writing to page 1 / register 38, bits D6–D0. Changing the right-channel
analog volume for the speaker is controlled by writing to page 1 / register 39, bits D6–D0.
Routing the signal from the output of the left-channel analog volume control to the input of the left-channel
speaker amplifier is done by writing to page 1 / register 38, bit D7. Routing the signal from the output of
the right-channel analog volume control to the input of the right-channel speaker amplifier is done by
writing to page 1 / register 39, bit D7.
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