ADV7175A datasheet(18/52 Pages) AD

18 / 52 page

ADV7175A/ADV7176A

–18–

REV. B

FIELD

PIXEL

DATA

PAL = 12 * CLOCK/2

NTSC = 16 * CLOCK/2

PAL = 132 * CLOCK/2

NTSC = 122 * CLOCK/2

HSYNC

BLANK

Figure 20. Timing Mode 1 Odd/Even Field Transitions Master/Slave

Mode 2: Slave Option

HSYNC, VSYNC, BLANK

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

In this mode the ADV7175A/ADV7176A accepts horizontal and vertical SYNC signals. A coincident low transition of both

HSYNC and VSYNC inputs indicates the start of an odd field. A VSYNC low transition when HSYNC is high indicates the start of

an even field. The

BLANK signal is optional. When the BLANK input is disabled, the ADV7175A/ADV7176A automatically blanks

all normally blank lines as per CCIR-624. Mode 2 is illustrated in Figure 21 (NTSC) and Figure 22 (PAL).

522

523

524

525

678

DISPLAY

VERTICAL BLANK

ODD FIELD

EVEN FIELD

HSYNC

BLANK

VSYNC

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

283

284

285

ODD FIELD

EVEN FIELD

DISPLAY

VERTICAL BLANK

HSYNC

BLANK

VSYNC

Figure 21. Timing Mode 2 (NTSC)

ADV7175A Datasheet(PDF) 18 Page - Analog Devices

ADV7175A Datasheet(HTML) 18 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

Datasheet Download

Link URL