LMH1983 Datasheet, PDF (22/55 Pages) National Semiconductor (TI) – Generating 44.1 kHz Based highly integrated programmable audio

LMH1983
SNLS309I – APRIL 2010 – REVISED DECEMBER 2014
www.ti.com
FORMAT
NTSC, 525i
PAL, 625i
525p
625p
720p/60
720p/59.94
720p/50
720p/30
720p/29.97
720p/25
720p/24
720p/23.98
1080p/60
1080p/59.94
1080p/50
1080p(psF)/30
1080p(psF)/29.97
1080p(psF)/25
1080p(psF)/24
1080p(psF)/23.98
1080i/60
1080i/59.94
1080i/50
48 kHz word clock
96 kHz word clock
27 MHz osc clk
10 MHz GPS osc clk
Reference
Divider
1
1
1
1
1
5
1
1
5
1
1
2
1
5
1
1
5
1
1
1
1
5
1
2
4
1000
600
Table 2. Supported Formats Lookup Table (LUT)
INPUT TIMING / PLL1 PARAMETERS
Feedback
Divider
Phase Detector PD Periods per
(PD) Freq. (kHz) Frame Counter
1716
15.7343
525
1728
15.625
625
858
31.4685
525
864
600
3003
720
1200
6006
1440
1500
3003
400
2002
480
800
4004
960
1000
1001
800
4004
960
1125
1125
1000
1620
31.25
45.0
8.99101
37.5
22.5
4.49550
18.75
18.0
8.99101
67.5
13.48651
56.25
33.75
6.74326
28.125
27.0
26.9730
33.75
6.74326
28.125
24.0
24.0
27.000
16.6666
625
750
150
750
750
150
750
750
375
1125
225
1125
1125
225
1125
1125
1125
1125
225
1125
1
1
1
1
PLL#
1
2
1
2
1
2
1
2
2
3
2
2
3
2
2
3
2
3
2
2
3
2
2
3
2
3
2
4
4
OUTPUT TIMING (OUT1–4) PARAMETERS
PLL Clock Total Clocks per Total Lines per
Freq. (MHz)
Line Counter Frame Counter
27.0
1716
525
148.5
9438
27.0
1728
625
148.5
9504
27.0
858
525
148.5
4719
27.0
864
625
148.5
4752
148.5
3300
750
148.35
3300
750
148.5
3960
750
148.5
6600
750
148.35
6600
750
148.5
7920
750
148.5
8250
750
148.35
8250
750
148.5
2200
1125
148.35
2200
1125
148.5
2640
1125
148.5
4400
1125
148.35
4400
1125
148.5
5280
1125
148.5
5500
1125
148.35
5500
1125
148.5
4400
1125
148.35
4400
1125
148.5
5280
1125
98.304
2048
1
98.304
1024
1
Input only
Input only
Frame Rate
(Hz)
29.97
25
59.94
50
60
59.94
50
30
29.97
25
24
23.98
60
59.94
50
30
29.97
25
24
23.98
30
29.97
25
48000
96000
22
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