ADV7179BCP-REEL Просмотр технического описания (PDF) - Analog Devices

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ADV7179BCP-REEL

Chip Scale PAL/NTSC Video Encoder with Advanced Power Management

Analog Devices 

ADV7174/ADV7179

Mode 3: Master/Slave Option HSYNC, BLANK, FIELD

(Timing Register 0 TR0 = X X X X X 1 1 0 or X X X X X 1 1 1)

In this mode, the ADV7174/ADV7179 accepts or generates

horizontal SYNC and odd/even FIELD signals. A transition of

the FIELD input when HSYNC is high indicates a new frame,

DISPLAY

that is, vertical retrace. The BLANK signal is optional. When

the BLANK input is disabled, the ADV7174/ADV7179

automatically blanks all normally blank lines as per CCIR-624.

Mode 3 is illustrated in Figure 31 (NTSC) and Figure 32 (PAL).

VERTICAL BLANK

DISPLAY

522 523 524 525

1

HSYNC

BLANK

2

3

4

5

6

7

FIELD

EVEN FIELD ODD FIELD

8

9

10

11

DISPLAY

VERTICAL BLANK

20

21

22

DISPLAY

260 261 262 263 264 265 266 267 268 269 270 271 272 273 274

HSYNC

BLANK

FIELD

DISPLAY

ODD FIELD EVEN FIELD

Figure 31. Timing Mode 3 (NTSC)

VERTICAL BLANK

283 284 285

DISPLAY

622

623

624

625

1

2

3

4

5

6

7

HSYNC

BLANK

FIELD

EVEN FIELD ODD FIELD

DISPLAY

VERTICAL BLANK

21

22

23

DISPLAY

309

310

311

312

313

314

315

316

317

318

319

320

HSYNC

BLANK

FIELD

ODD FIELD EVEN FIELD

Figure 32. Timing Mode 3 (PAL)

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