參數(shù)資料
型號: TLV320AIC32IRHB
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC32
封裝: 5 X 5 MM, PLASTIC, QFN-32
文件頁數(shù): 48/76頁
文件大?。?/td> 1124K
代理商: TLV320AIC32IRHB
www.ti.com
Output Stage Volume Controls
SLAS479B – AUGUST 2005 – REVISED AUGUST 2006
Page 0 / Register 44:
Right DAC Digital Volume Control Register
BIT
READ/
RESET
DESCRIPTION
WRITE
VALUE
D7
R/W
1
Right DAC Digital Mute
0: The right DAC channel is not muted
1: The right DAC channel is muted
D6–D0
R/W
0000000
Right DAC Digital Volume Control Setting
0000000: Gain = 0.0-dB
0000001: Gain = –0.5-dB
0000010: Gain = –1.0-dB
1111101: Gain = –62.5-dB
1111110: Gain = –63.0-dB
1111111: Gain = –63.5-dB
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 4 lists the detailed gain versus programmed setting for this basic volume control.
Table 4. Output Stage Volume Control Settings and Gains
Gain Setting
Analog Gain
Gain Setting
Analog Gain
Gain Setting
Analog Gain
Gain Setting
Analog Gain
(dB)
0 0.0
30
-15.0
60
-30.1
90
-45.2
1
-0.5
31
-15.5
61
-30.6
91
-45.8
2
-1.0
32
-16.0
62
-31.1
92
-46.2
3
-1.5
33
-16.5
63
-31.6
93
-46.7
4
-2.0
34
-17.0
64
-32.1
94
-47.4
5
-2.5
35
-17.5
65
-32.6
95
-47.9
6
-3.0
36
-18.0
66
-33.1
96
-48.2
7
-3.5
37
-18.6
67
-33.6
97
-48.7
8
-4.0
38
-19.1
68
-34.1
98
-49.3
9
-4.5
39
-19.6
69
-34.6
99
-50.0
10
-5.0
40
-20.1
70
-35.1
100
-50.3
11
-5.5
41
-20.6
71
-35.7
101
-51.0
12
-6.0
42
-21.1
72
-36.1
102
-51.4
13
-6.5
43
-21.6
73
-36.7
103
-51.8
14
-7.0
44
-22.1
74
-37.1
104
-52.2
15
-7.5
45
-22.6
75
-37.7
105
-52.7
16
-8.0
46
-23.1
76
-38.2
106
-53.7
17
-8.5
47
-23.6
77
-38.7
107
-54.2
18
-9.0
48
-24.1
78
-39.2
108
-55.3
19
-9.5
49
-24.6
79
-39.7
109
-56.7
20
-10.0
50
-25.1
80
-40.2
110
-58.3
21
-10.5
51
-25.6
81
-40.7
111
-60.2
22
-11.0
52
-26.1
82
-41.2
112
-62.7
23
-11.5
53
-26.6
83
-41.7
113
-64.3
24
-12.0
54
-27.1
84
-42.2
114
-66.2
25
-12.5
55
-27.6
85
-42.7
115
-68.7
26
-13.0
56
-28.1
86
-43.2
116
-72.2
52
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