GS3470 datasheet(38/169 Pages) SEMTECH

38 / 169 page

GS3470

Final Data Sheet

Rev.8

PDS-060500

September 2017

38 of 169

Semtech

www.semtech.com

4.12.1 CEA-861 Timing Generation

The GS3470 is capable of generating CEA861 timing for all of the supported video

formats.

4.12.1.1 Vertical Timing

When CEA 861 timing is selected, the device outputs standards compliant CEA 861

timing signals as shown in the figures below, for example 240 active lines per field for

SMPTE ST 125.

The timing of the CEA 861 timing reference signals can be found in the CEA 861

specifications.

Table 4-8: Supported CEA-861 Formats

Format

CEA-861

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

20h, 00h

1280 x 720p @ 50Hz

24h, 04h

1280x720p @ 29.97/30Hz

27h, 02h

1280x720p @ 25Hz

26h, 06h

1920 x 1080i @ 59.94/60Hz

2Ah, 0Ah

1920 x 1080i @ 50Hz

2Ch, 0Ch

1920 x 1080p @ 29.97/30Hz

341

2Bh, 0Bh

1920 x 1080p @ 25Hz

332

2Dh, 0Dh

1920 x 1080p @ 23.98/24Hz

30h, 10h

1920 x 1080p @ 59.94/60Hz

161

2Bh

1920 x 1080p @ 50Hz

312

2Dh

2048x1080p @

30/25/24/48/50/60Hz

Undefined3

21h, 22h, 23h, 37h, 38h,

39h, 3Ah, 3Bh, 3Ch

2048x1080i @ 48/50/59.94/60Hz

Undefined3

34h, 35h, 36h

Notes:

1,2: Timing is identical for the corresponding formats

3: Derived from the standard. Timing diagram provided.

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