參數(shù)資料
型號： 82C931
廠商： Electronic Theatre Controls, Inc.
英文描述： Plug and Play Integrated Audio Controller
中文描述： 即插即用集成音頻控制器
文件頁數(shù)： 30/64頁
文件大小： 634K
代理商： 82C931
82C931
Page 22
912-3000-035
Revision: 2.1
OPTi
4.3
The Frequency Synthesizer (FS) block generates the codec
sampling clock from a reference crystal oscillator of
14.318MHz. The output frequency of the FA is equal to 256
times fs (where fs = codec sampling frequency).
Frequency Synthesizer
One of the 236 frequencies may be generated by the FS. The
selection of the FS output frequency is done via programming
eight register bits in the Digital Audio Processor Write Com-
mand/Data (40h/FSEL[7:0]).
Table 4-1 gives the Frequency Selection, where the
FSEL[7:0] address is given in decimal equivalent. FOUT-
actual is the FS output frequency for a given FSEL code and
%error gives the difference between the FOUT-actual and
the target FOUT-spec.
Shaded table entries refer to the 14 critical sampling frequen-
cies. The error for these frequencies fall within ±0.15%.
Table 4-1
FS Output Frequencies
FSEL
FOUT-actual
(Hz)
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
3909.064
3924.890
3938.710
3947.978
3951.554
3957.289
3994.978
4030.968
4033.391
4047.543
4067.614
4084.752
4092.416
4112.477
4131.170
4142.940
4164.977
4178.655
4209.761
4221.108
4237.097
4255.520
4276.976
4302.284
4302.284
4327.892
4350.087
4369.507
4386.642
4415.502
4433.451
4448.952
4462.475
4488.185
4500.090
4523.725
4544.287
4565.689
4584.401
4601.810
4605.974
4609.590
4660.807
43
44
45
46
47
48
49
50
51
52
53
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
4713.176
4716.962
4739.804
4759.973
4783.460
4806.457
4833.430
4847.240
4877.589
4906.113
4934.972
4955.795
4971.528
4993.722
5019.331
5049.208
5084.517
5115.520
5126.888
5151.419
5178.675
5202.762
5243.408
5268.739
5290.646
5326.637
5346.220
5377.855
5412.550
5437.608
5456.555
5493.094
5514.194
5519.377
5523.920
5592.969
5668.549
5680.359
5720.082
5746.201
5785.830
5804.024
5843.400
FSEL
FOUT-actual
(Hz)
86
87
88
89
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
118
119
120
121
122
123
124
125
126
127
128
5887.335
5915.640
5949.967
5992.466
6023.197
6059.049
6101.420
6138.624
6168.715
6214.410
6260.786
6292.090
6331.663
6377.947
6408.610
6453.425
6491.839
6544.963
6579.963
6615.339
6670.513
6711.562
6750.135
6802.259
6848.533
6895.441
6935.281
6991.211
7049.961
7089.679
7139.960
7190.960
7250.145
7295.177
7359.169
7402.459
7457.292
7512.943
7573.812
7626.775
7690.332
7752.630
7813.706
FSEL
FOUT-actual
(Hz)
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
7877.421
7935.969
7989.955
8066.782
8129.315
8196.592
8262.340
8329.953
8389.453
8474.195
8544.813
8636.202
8691.776
8773.284
8849.634
8924.950
9005.628
9088.574
9175.964
9219.179
9321.614
9433.923
9519.947
9599.872
9710.015
9805.854
9904.215
10025.133
10098.416
10209.387
10302.837
10418.275
10532.214
10634.518
10755.709
10875.217
10986.188
11028.389
11263.617
11360.718
11485.561
11616.166
11774.671
FSEL
FOUT-actual
(Hz)
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
11910.952
12046.394
12189.804
12356.559
12494.931
12663.325
12817.220
12983.677
13159.926
13332.077
13511.104
13697.066
13866.865
14099.921
14286.387
14487.810
14703.165
14914.583
15147.624
15380.664
15627.413
15871.938
16018.697
16379.408
16665.917
16948.390
17244.987
17537.275
17839.642
18177.148
18511.939
18905.810
19225.830
19617.129
20034.515
20418.775
20836.550
21286.672
21750.434
22049.203
22721.435
23238.391
23821.904
FSEL
FOUT-actual
(Hz)
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
24394.863
24989.860
25634.440
26303.566
27446.976
27703.490
28566.238
29417.563
30295.247
31254.825
32007.953
33080.364
34502.080
35691.971
37053.418
38003.505
40005.262
41693.039
44098.407
45495.044
48006.315
FSEL
FOUT-actual
(Hz)
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