ADV7171SU Analog Devices, ADV7171SU Datasheet - Page 17

• Manufacturer Part Number: ADV7171SU
• Description: Digital PAL/NTSC Video Encoder with 10-Bit SSAF and Advanced Power Management
• Manufacturer: Analog Devices

Mode 1: Slave Option HSYNC, BLANK, FIELD
(Timing Register 0 TR0 = X X X X X 0 1 0)
In this mode the ADV7170/ADV7171 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 dis-
abled, the ADV7170/ADV7171 automatically blanks all normally blank lines as per CCIR-624. Mode 1 is illustrated in Figure
24 (NTSC) and Figure 25 (PAL).
REV. 0
BLANK
BLANK
HSYNC
HSYNC
FIELD
FIELD
HSYNC
HSYNC
BLANK
BLANK
FIELD
FIELD
522
260
DISPLAY
DISPLAY
622
309
523
261
DISPLAY
DISPLAY
623
310
524
262
624
311
525
263
EVEN FIELD
ODD FIELD
264
ODD FIELD
625
312
1
265
ODD FIELD
EVEN FIELD
EVEN FIELD
2
313
1
Figure 24. Timing Mode 1 (NTSC)
EVEN FIELD
Figure 25. Timing Mode 1 (PAL)
266
3
314
2
ODD FIELD
267
4
315
3
268
5
VERTICAL BLANK
VERTICAL BLANK
VERTICAL BLANK
–17–
316
4
VERTICAL BLANK
269
6
317
5
270
7
318
6
271
8
319
272
7
9
320
273
10
274
11
21
ADV7170/ADV7171
334
22
283
20
DISPLAY
23
335
284
21
DISPLAY
336
DISPLAY
DISPLAY
285
22