CDB4955 Ver la hoja de datos (PDF) - Cirrus Logic

Número de pieza

componentes Descripción

Fabricante

CDB4955

NTSC/PAL Digital Video Encoder

Cirrus Logic 

CS4954 CS4955

VSYNC Drops

Analog

Field 1

620 621 622 623 624 625 1

2

3

4

5

Analog

Field 2

6

7

308 309 310 311 312 313 314 315 316 317 318 319 320

Analog

Field 3

620 621 622 623 624 625 1

2

3

4

5

Analog

Field 4

6

7

308 309 310 311 312 313 314 315 316 317 318 319 320

23

24

336 337

23

24

336 337

Analog

Field 5

620 621 622 623 624 625 1

2

3

4

5

Analog

Field 6

6

7

308 309 310 311 312 313 314 315 316 317 318 319 320

Analog

Field 7

620 621 622 623 624 625 1

2

3

4

5

Analog

Field 8

6

7

308 309 310 311 312 313 314 315 316 317 318 319 320

23

24

336 337

23

24

336 337

Burst Phase = 135 degrees relative to U

Burst Phase = 225 degrees relative to U

Figure 8. PAL Video Interlaced Timing

As mentioned above, there are no horizontal and

vertical timing signals necessary in ITU-R.BT656

mode. However in some cases it is advantageous to

output these timing signals for other purposes. By

setting the 656_SYNC_OUT register bit in

CONTROL_6 register, HSYNC and VSYNC are

output,so that other devices in the system can syn-

chronize to these timing signals.

20

DS278F6

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