參數(shù)資料
型號： AD1954YST
廠商： ANALOG DEVICES INC
元件分類： 消費家電
英文描述： RESISTOR
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： MS-026BBC, PLASTIC, LQFP-48
文件頁數(shù)： 23/36頁
文件大小： 1470K
代理商： AD1954YST
AD1954
–23–
NOTES
1
The detector hold and decay times are integer values, while the rest of the parameters are fractional twos complement values.
2
The default decay time of the hold/release circuit is set fast enough so that the decay is dominated by the time constant of the rms detector.
REV. A
Table VI. Parameter RAM Contents—Default Program
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
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
IIR0 Left b0
IIR0 Left b1
IIR0 Left b2
IIR0 Left a1
IIR0 Left a2
IIR1 Left b0
IIR1 Left b1
IIR1 Left b2
IIR1 Left a1
IIR1 Left a2
IIR2 Left b0
IIR2 Left b1
IIR2 Left b2
IIR2 Left a1
IIR2 Left a2
IIR3 Left b0
IIR3 Left b1
IIR3 Left b2
IIR3 Left a1
IIR3 Left a2
IIR4 Left b0
IIR4 Left b1
IIR4 Left b2
IIR4 Left a1
IIR4 Left a2
IIR5 Left b0
IIR5 Left b1
IIR5 Left b2
IIR5 Left a1
IIR5 Left a2
IIR6 Left b0
IIR6 Left b1
IIR6 Left b2
IIR6 Left a1
IIR6 Left a2
IIR0 Right b0 1.0
IIR0 Right b1 0
IIR0 Right b2 0
IIR0 Right a1
IIR0 Right a2
IIR1 Right b0 1.0
IIR1 Right b1 0
IIR1 Right b2 0
IIR1 Right a1
IIR1 Right a2
IIR2 Right b0 1.0
IIR2 Right b1 0
IIR2 Right b2 0
IIR2 Right a1
IIR2 Right a2
IIR3 Right b0 1.0
IIR3 Right b1 0
IIR3 Right b2 0
IIR3 Right a1
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
0
0
0
0
0
0
0
Default Value
in Fractional
2.20 Format
Addr
Function
54
55
56
57
58
59
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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
IIR3 Right a2
IIR4 Right b0
IIR4 Right b1
IIR4 Right b2
IIR4 Right a1
IIR4 Right a2
IIR5 Right b0
IIR5 Right b1
IIR5 Right b2
IIR5 Right a1
IIR5 Right a2
IIR6 Right b0
IIR6 Right b1
IIR6 Right b2
IIR6 Right a1
IIR6 Right a2
IIR0 Xover Left b0
IIR0 Xover Left b1
IIR0 Xover Left b2
IIR0 Xover Left a1
IIR0 Xover Left a2
IIR1 Xover Left b0
IIR1 Xover Left b1
IIR1 Xover Left b2
IIR1 Xover Left a1
IIR1 Xover Left a2
IIR0 Xover Right b0
IIR0 Xover Right b1
IIR0 Xover Right b2
IIR0 Xover Right a1
IIR0 Xover Right a2
IIR1 Xover Right b0
IIR1 Xover Right b1
IIR1 Xover Right b2
IIR1 Xover Right a1
IIR1 Xover Right a2
IIR0 Xover Sub b0
IIR0 Xover Sub b1
IIR0 Xover Sub b2
IIR0 Xover Sub a1
IIR0 Xover Sub a2
IIR1 Xover Sub b0
IIR1 Xover Sub b1
IIR1 Xover Sub b2
IIR1 Xover Sub a1
IIR1 Xover Sub a2
IIR2 Xover Sub b0
IIR2 Xover Sub b1
IIR2 Xover Sub b2
IIR2 Xover Sub a1
IIR2 Xover Sub a2
IIR Sub rms b0
IIR Sub rms b1
IIR Sub rms b2
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
0
0
1.0
0
0
Default Value
in Fractional
2.20 Format
Addr
Function
108
109
110–142
IIR Sub rms a1
IIR Sub rms a2
Main Compressor
Look-Up Table Base
Main Compressor
Attack/rms Time
Constant
Main Post-
Compressor Gain
Subwoofer
Compressor
Look-Up Table Base
Sub Compressor
Attack/rms Time
Constant
Post-Compressor
Gain (Sub)
High-Pass Filter
Cutoff Frequency
Main Compressor
Look-Ahead Delay
Delay Left
Delay Right
Delay Sub
Stereo Spreading
Coefficient
Stereo Spreading
Frequency Control
Subwoofer
Reinjection
to Main Left
Subwoofer
Reinjection
to Main Right
Subwoofer Channel
Input Gain from
Left In
Subwoofer Channel
Input Gain from
Right In
Main Detector Hold
Time, Samples
(4095 Max)
Sub Detector Hold
Time, Samples
(4095 Max)
Main Detector
Decay Time
Sub Detector
Decay Time
Unused
0
0
1.0 (all)
143
5.75
10
4
(120 dB/sec)
144
1.0
145–177
1.0
178
5.75
10
4
(120 dB/sec)
179
1.0
180
181
0
182
183
184
185
0
0
0
0
186
0.112694
187
0.0
188
0.0
189
0.5
190
0.5
191
0
1
192
0
1
193
0.069611
(10000 dB/sec)
2
0.069611
(10000 dB/sec)
2
194
195–255
Default Value
in Fractional
2.20 Format
Addr
Function
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