adv7718 Analog Devices, Inc., adv7718 Datasheet - Page 16

• Manufacturer Part Number: adv7718
• Description: Integrated Digital Ccir-601 Pal/ntsc Video Encoder
• Manufacturer: Analog Devices, Inc.

ADV7177/ADV7178
Mode 1: Slave Option HSYNC, BLANK, FIELD
(Timing Register 0 TR0 = X X X X X 0 1 0)
In this mode the ADV7177/ADV7178 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 ADV7177/ADV7178 automatically blanks all normally blank lines. Mode 1 is illustrated in Figure 11 (NTSC) and Figure 12 (PAL).
HSYNC
HSYNC
BLANK
BLANK
FIELD
FIELD
HSYNC
BLANK
FIELD
HSYNC
BLANK
FIELD
260
522
DISPLAY
DISPLAY
309
261
523
DISPLAY
622
DISPLAY
310
262
524
623
311
263
525
ODD FIELD
624
EVEN FIELD
264
312
1
ODD FIELD
625
265
EVEN FIELD
EVEN FIELD
2
313
ODD FIELD
1
EVEN FIELD
266
3
314
2
ODD FIELD
267
4
315
268
3
5
VERTICAL BLANK
VERTICAL BLANK
316
VERTICAL BLANK
VERTICAL BLANK
269
4
6
317
270
7
5
318
271
8
6
319
272
9
7
320
273
10
274
11
21
334
22
283
20
335
DISPLAY
23
284
DISPLAY
21
336
DISPLAY
DISPLAY
285
22