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GS1661 Datasheet(PDF) 41 Page - Semtech Corporation

Part # GS1661
Description  HD/SD SDI Receiver, with Integrated Adaptive Cable Equalizer complete with SMPTE Video Processing
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

GS1661 Datasheet(HTML) 41 Page - Semtech Corporation

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GS1661 HD/SD SDI Receiver
Data Sheet
53751 - 3
September 2012
41 of 84
4.11.1.1 Vertical Timing
When CEA861 timing is selected, the device outputs standards compliant CEA861
timing signals as shown in the figures below; for example 240 active lines per field for
SMPTE 125M.
The register bit TRS_861 is used to select DFP timing generator mode which follows the
vertical blanking timing as defined by the embedded TRS code words. This setting is
helpful for 525i. When TRS_861 is set LOW, DE will go HIGH for 480 lines out of 525.
When TRS_861 is set HIGH, DE will go HIGH for 487 lines out of 525.
The timing of the CEA 861 timing reference signals can be found in the CEA 861
specifications. For information, they are included in the following diagrams. These
diagrams may not be comprehensive.
Table 4-9: Supported CEA-861 Formats
Format
CEA-861 Format
VD_STD[5:0]
720(1440) x 480i @ 59.94/60Hz
6 & 7
16h, 17h, 19h, 1Bh
720(1440) x 576i @ 50Hz
21 & 22
18h, 1Ah
1280 x 720p @ 59.94/60Hz
4
20h, 00h
1280 x 720p @ 50Hz
19
24h, 04h
1920 x 1080i @ 59.94/60Hz
5
2Ah, 0Ah
1920 x 1080i @ 50Hz
20
2Ch, 0Ch
1920 x 1080p @ 29.97/30Hz
341
2Bh, 0Bh
1920 x 1080p @ 25Hz
332
2Dh, 0Dh
1920 x 1080p @ 23.98/24Hz
32
30h, 10h
NOTES:
1,2: Timing is identical for the corresponding formats.
Table 4-10: CEA861 Timing Formats
Format
Parameters
4
H:V:DE Input Timing 1280 x 720p @ 59.94/60Hz
5
H:V:DE Input Timing 1920 x 1080i @ 59.94/60Hz
6&7
H:V:DE Input Timing 720 (1440) x 480i @ 59.94/60Hz
19
H:V:DE Input Timing 1280 x 720p @ 50Hz
20
H:V:DE Input Timing 1920 x 1080i @ 50Hz
21&22
H:V:DE Input Timing 720 (1440) x 576 @ 50Hz
32
H:V:DE Input Timing 1920 x 1080p @ 23.94/24Hz
33
H:V:DE Input Timing 1920 x 1080p @ 25Hz
34
H:V:DE Input Timing 1920 x 1080p @ 29.97/30Hz


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