ADV7171SU Analog Devices, ADV7171SU Datasheet - Page 20
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ADV7171SU
Manufacturer Part Number
ADV7171SU
Description
Digital PAL/NTSC Video Encoder with 10-Bit SSAF and Advanced Power Management
Manufacturer
Analog Devices
Datasheet
1.ADV7171SU.pdf
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ADV7170/ADV7171
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 ADV7170/ADV7171 accepts or generates Horizontal SYNC and Odd/Even FIELD signals. A transition of the
FIELD input when HSYNC is high indicates a new frame, i.e., vertical retrace. The BLANK signal is optional. When the BLANK
input is disabled, the ADV7170/ADV7171 automatically blanks all normally blank lines as per CCIR-624. Mode 3 is illustrated in
Figure 31 (NTSC) and Figure 32 (PAL).
HSYNC
BLANK
BLANK
HSYNC
FIELD
FIELD
HSYNC
BLANK
HSYNC
BLANK
FIELD
FIELD
522
260
DISPLAY
DISPLAY
622
309
523
261
DISPLAY
DISPLAY
623
310
262
524
624
311
263
525
EVEN FIELD
ODD FIELD
264
ODD FIELD
625
312
1
265
EVEN FIELD
ODD FIELD
EVEN FIELD
2
313
1
Figure 31. Timing Mode 3 (NTSC)
EVEN FIELD
Figure 32. Timing Mode 3 (PAL)
266
3
314
2
ODD FIELD
267
4
315
3
268
5
VERTICAL BLANK
VERTICAL BLANK
–20–
316
4
VERTICAL BLANK
VERTICAL BLANK
269
6
317
5
270
7
318
6
271
8
319
7
272
9
320
273
10
274
11
21
334
22
283
20
DISPLAY
335
23
284
21
DISPLAY
336
DISPLAY
DISPLAY
285
22
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