參數(shù)資料
型號: LM4931
廠商: National Semiconductor Corporation
英文描述: Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers
中文描述: 與單聲道音頻子系統(tǒng)高效揚聲器和立體聲耳機放大器
文件頁數(shù): 20/47頁
文件大小: 1640K
代理商: LM4931
PLL Configuration Registers
(Continued)
AUDIO CLOCK REQUIREMENTS
Input Clock
12.000MHz
13.000MHz
14.400MHz
16.200MHz
16.800MHz
19.200MHz
19.440MHz
19.680MHz
19.800MHz
12.000MHz
13.000MHz
14.400MHz
16.200MHz
16.800MHz
19.200MHz
19.440MHz
19.680MHz
19.800MHz
I
2
S Inputs:
1.536MHz
1.4112MHz
Other examples:
19.44MHz
24.576MHz
66MHz
100MHz
100MHz
Sample Rate
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
44.1kHz
44.1kHz
44.1kHz
44.1kHz
44.1kHz
44.1kHz
44.1kHz
44.1kHz
44.1kHz
Required Clock
12.288MHz
12.288MHz
12.288MHz
12.288MHz
12.288MHz
12.288MHz
12.288MHz
12.288MHz
12.288MHz
11.2896MHz
11.2896MHz
11.2896MHz
11.2896MHz
11.2896MHz
11.2896MHz
11.2896MHz
11.2896MHz
11.2896MHz
M
14
4
9
11
8
13
11
13
16
8
6
14
15
17
15
15
7
17
N
57
15
30
33
23
33
27
32
39
32
20
43
41
57
35
34
16
48
N_MOD
11
4
23
12
13
9
26
15
23
27
27
29
26
4
9
27
2
15
P
4
4
4
4
4
4
4
4
4
4
4
4
4
5
4
4
4
5
Output Clock
12.288MHz
12.288MHz
12.288MHz
12.288MHz
12.288MHz
12.288MHz
12.288MHz
12.288MHz
12.287MHz
11.290MHz
11.290MHz
11.290MHz
11.289MHz
11.290MHz
11.290MHz
11.289MHz
11.290MHz
11.289MHz
Error (Hz)
0.2Hz
4.1Hz
1.9Hz
0.3Hz
1.1Hz
1.8Hz
0.3Hz
0.7Hz
0.1Hz
1.7Hz
2.9Hz
2.3Hz
0.9Hz
1.6Hz
0.8Hz
1.6Hz
0.2Hz
3.0Hz
48kHz
44.1kHz
12.288MHz
11.2896MHz
1
1
32
32
0
0
4
4
12.288MHz
11.2896MHz
0Hz
0Hz
32kHz
44.1kHz
48kHz
48kHz
44.1kHz
8.192MHz
11.2896MHz
12.288MHz
12.288MHz
11.2896MHz
17
14
12
24
31
50
26
17
23
28
5
11
28
19
0
4
4
4
4
4
8.193MHz
11.2868MHz
12.288MHz
12.288MHz
11.2899MHz
6Hz
2.3Hz
4.1Hz
1.6Hz
2.8Hz
Please note that the Error (Hz) column is relative to sample rate. For instance:
If the Sample Rate is 48kHz and the input clock is 12.000MHz, then the solution shown in the table is:
Output Clock = 12.000MHz * (57 + 11/32) / (14 * 4) = 12.287946MHz. = 47.99979kHz * 256
Error = 48kHz – 47.99979kHz = 0.2Hz
20100963
FIGURE 4.
L
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