ADV7174KCP 查看數據表（PDF） - Analog Devices

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ADV7174KCP

Chip Scale PAL/NTSC Video Encoder with Advanced Power Management

Analog Devices 

ADV7174/ADV7179

Mode 1: Slave Option HSYNC, BLANK, FIELD

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

In this mode, the ADV7174/ADV7179 accepts horizontal

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

input when HSYNC is low indicates a new frame, i.e., 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 1 is illustrated in

Figure 24 (NTSC) and Figure 25 (PAL).

DISPLAY

VERTICAL BLANK

DISPLAY

522 523 524 525

1

HSYNC

2

3

4

5

6

7

8

9

10

11

BLANK

FIELD

EVEN FIELD ODD FIELD

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

ODD FIELD EVEN FIELD

Figure 24. Timing Mode 1 (NTSC)

DISPLAY

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 25. Timing Mode 1 (PAL)

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334

335

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