Datasheet

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Output Stage Volume Controls
TLV320AIC34
SLAS538A – OCTOBER 2007 – REVISED NOVEMBER 2007
A basic analog volume control with range from 0 dB to – 78 dB and mute is replicated multiple times in the output
stage network, connected to each of the analog signals that route to the output stage. In addition, to enable
completely independent mixing operations to be performed for each output driver, each analog signal coming into
the output stage may have up to seven separate volume controls. These volume controls all have approximately
0.5-dB step programmability over most of the gain range, with steps increasing slightly at the lowest attenuations.
Table 7 lists the detailed gain versus programmed setting for this basic volume control.
Table 7. Output Stage Volume Control Settings and Gains
Gain Setting Analog Gain Gain Setting Analog Gain Gain Setting Analog Gain Gain Setting Analog Gain
(dB) (dB) (dB) (dB)
0 0 30 – 15 60 – 30.1 90 – 45.2
1 – 0.5 31 – 15.5 61 – 30.6 91 – 45.8
2 – 1 32 – 16 62 – 31.1 92 – 46.2
3 – 1.5 33 – 16.5 63 – 31.6 93 – 46.7
4 – 2 34 – 17 64 – 32.1 94 – 47.4
5 – 2.5 35 – 17.5 65 – 32.6 95 – 47.9
6 – 3 36 – 18 66 – 33.1 96 – 48.2
7 – 3.5 37 – 18.6 67 – 33.6 97 – 48.7
8 – 4 38 – 19.1 68 – 34.1 98 – 49.3
9 – 4.5 39 – 19.6 69 – 34.6 99 – 50
10 – 5 40 – 20.1 70 – 35.1 100 – 50.3
11 – 5.5 41 – 20.6 71 – 35.7 101 – 51
12 – 6 42 – 21.1 72 – 36.1 102 – 51.4
13 – 6.5 43 – 21.6 73 – 36.7 103 – 51.8
14 – 7 44 – 22.1 74 – 37.1 104 – 52.2
15 – 7.5 45 – 22.6 75 – 37.7 105 – 52.7
16 – 8 46 – 23.1 76 – 38.2 106 – 53.7
17 – 8.5 47 – 23.6 77 – 38.7 107 – 54.2
18 – 9 48 – 24.1 78 – 39.2 108 – 55.3
19 – 9.5 49 – 24.6 79 – 39.7 109 – 56.7
20 – 10 50 – 25.1 80 – 40.2 110 – 58.3
21 – 10.5 51 – 25.6 81 – 40.7 111 – 60.2
22 – 11 52 – 26.1 82 – 41.2 112 – 62.7
23 – 11.5 53 – 26.6 83 – 41.7 113 – 64.3
24 – 12 54 – 27.1 84 – 42.2 114 – 66.2
25 – 12.5 55 – 27.6 85 – 42.7 115 – 68.7
26 – 13 56 – 28.1 86 – 43.2 116 – 72.2
27 – 13.5 57 – 28.6 87 – 43.8 117 – 78.3
28 – 14 58 – 29.1 88 – 44.3 118 – 127 Mute
29 – 14.5 59 – 29.6 89 – 44.8
Page 0 / Register 45: LINE2LP_x and LINE2LM_x to HPLOUT_x Volume Control Register
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7 R/W 0 LINE2LP_x and LINE2LM_x Output Routing Control
0: LINE2LP_x and LINE2LM_x is not routed to HPLOUT_x.
1: LINE2LP_x and LINE2LM_x is routed to HPLOUT_x.
D6 – D0 R/W 000 0000 LINE2LP_x and LINE2LM_x to HPLOUT_x Analog Volume Control
For 7-bit register setting versus analog gain values, see Table 7 .
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