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LM4931 Datasheet(PDF) 20 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM4931
Description  Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers
PDF  47 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4931 Datasheet(HTML) 20 Page - National Semiconductor (TI)

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PLL Configuration Registers (Continued)
AUDIO CLOCK REQUIREMENTS
Input Clock
Sample Rate
Required Clock
M
N
N_MOD
P
Output Clock
Error (Hz)
12.000MHz
48kHz
12.288MHz
14
57
11
4
12.288MHz
0.2Hz
13.000MHz
48kHz
12.288MHz
4
15
4
4
12.288MHz
4.1Hz
14.400MHz
48kHz
12.288MHz
9
30
23
4
12.288MHz
1.9Hz
16.200MHz
48kHz
12.288MHz
11
33
12
4
12.288MHz
0.3Hz
16.800MHz
48kHz
12.288MHz
8
23
13
4
12.288MHz
1.1Hz
19.200MHz
48kHz
12.288MHz
13
33
9
4
12.288MHz
1.8Hz
19.440MHz
48kHz
12.288MHz
11
27
26
4
12.288MHz
0.3Hz
19.680MHz
48kHz
12.288MHz
13
32
15
4
12.288MHz
0.7Hz
19.800MHz
48kHz
12.288MHz
16
39
23
4
12.287MHz
0.1Hz
12.000MHz
44.1kHz
11.2896MHz
8
32
27
4
11.290MHz
1.7Hz
13.000MHz
44.1kHz
11.2896MHz
6
20
27
4
11.290MHz
2.9Hz
14.400MHz
44.1kHz
11.2896MHz
14
43
29
4
11.290MHz
2.3Hz
16.200MHz
44.1kHz
11.2896MHz
15
41
26
4
11.289MHz
0.9Hz
16.800MHz
44.1kHz
11.2896MHz
17
57
4
5
11.290MHz
1.6Hz
19.200MHz
44.1kHz
11.2896MHz
15
35
9
4
11.290MHz
0.8Hz
19.440MHz
44.1kHz
11.2896MHz
15
34
27
4
11.289MHz
1.6Hz
19.680MHz
44.1kHz
11.2896MHz
7
16
2
4
11.290MHz
0.2Hz
19.800MHz
44.1kHz
11.2896MHz
17
48
15
5
11.289MHz
3.0Hz
I
2S Inputs:
1.536MHz
48kHz
12.288MHz
1
32
0
4
12.288MHz
0Hz
1.4112MHz
44.1kHz
11.2896MHz
1
32
0
4
11.2896MHz
0Hz
Other examples:
19.44MHz
32kHz
8.192MHz
17
50
5
4
8.193MHz
6Hz
24.576MHz
44.1kHz
11.2896MHz
14
26
11
4
11.2868MHz
2.3Hz
66MHz
48kHz
12.288MHz
12
17
28
4
12.288MHz
4.1Hz
100MHz
48kHz
12.288MHz
24
23
19
4
12.288MHz
1.6Hz
100MHz
44.1kHz
11.2896MHz
31
28
0
4
11.2899MHz
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.
www.national.com
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