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LMH1982

TABLE 2. Supported Video Timing Formats and Timing Parameter Values

Pixel Clock Frequency

(MHz)

27

27

27

27

74.25

74.176

74.25

74.25

74.176

74.25

74.25

74.176

148.5

148.35

148.5

74.25

74.176

74.25

74.25

74.176

74.25

74.176

74.25

2200

2640

2200

2750

2750

2640

2200

2200

2640

1125

1125

1125

1125

1125

1125

1125

1125

1125

2200

1125

2200

1125

4125

750

4125

750

3960

750

25

24

23.98

60

59.94

50

30

29.97

25

24

23.98

30

29.97

25

3300

750

29.97

3300

750

30

1980

750

50

1650

750

59.94

1650

750

60

45.000

44.955

37.500

22.500

22.478

18.750

18.000

17.982

67.500

67.433

56.250

33.750

33.716

28.125

27.000

26.973

33.750

33.716

28.125

864

625

50

31.250

858

525

59.94

31.469

1728

625

25

15.625

1

1

1

1

2

1

1

2

1

1

0

1

2

1

1

2

1

1

1

1

2

1

1716

525

29.97

15.734

1

Total Pixels per Line

Total Lines per Frame Frame Rate H Freq (kHz)

REF_DIV

1

(Hz)

Register 03h

FB_DIV

1

Register

04h-05h

1716

1728

858

864

600

3003

720

1200

6006

1440

1500

3003

400

2002

480

800

4004

960

1000

1001

800

4004

960

www.national.com

Video Standard

Video Format

SMPTE 125M/

267M

NTSC/525I

ITU-R BT.601-5

PAL/625I

SMPTE 293M

525P/59.94

ITU-R BT.1358

625P/50

1280x720/60/P

1280x720/59.94/P

1280x720/50/P

SMPTE 296M

1280x720/30/P

1280x720/29.97/P

1280x720/25/P

1280x720/24/P

1280x720/23.98/P

1920x1080/60/P

12

1920x1080/59.94/P

1920x1080/50/P

SMPTE 274M

1920x1080/30/P

1920x1080/29.97/P

1920x1080/25/P

1920x1080/24/P

1920x1080/23.98/P

1920x1080/60/I

SMPTE 274M

1920x1080/59.94/I

1920x1080/50/I

Notes

1. Other PLL divider values may be compatible as described in section

4.1 Programming The VCXO PLL Dividers.

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