adv7194 Analog Devices, Inc., adv7194 Datasheet - Page 26

• Manufacturer Part Number: adv7194
• Description: Professional Extended-10? Video Encoder With 54 Mhz Oversampling
• Manufacturer: Analog Devices, Inc.

ADV7194
Mode 2: Master Option HSYNC, VSYNC, BLANK
(Timing Register 0 TR0 = X X X X X 1 0 1)
In this mode the ADV7194 can generate 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 ADV7194 automatically blanks all normally blank lines as
per CCIR-624. Mode 2 is illustrated in Figure 45 (NTSC) and Figure 46 (PAL). Figure 47 illustrates the HSYNC, BLANK and
VSYNC for an even-to-odd field transition relative to the pixel data. Figure 48 illustrates the HSYNC, BLANK and VSYNC for
an odd-to-even field transition relative to the pixel data.
VSYNC
HSYNC
HSYNC
VSYNC
BLANK
BLANK
622
HSYNC
BLANK
309
VSYNC
PIXEL
DATA
HSYNC
BLANK
VSYNC
DISPLAY
DISPLAY
PIXEL
DATA
623
310
624
311
PAL = 12
NTSC = 16
PAL = 12
NTSC = 16
EVEN FIELD
ODD FIELD
625
312
CLOCK/2
CLOCK/2
CLOCK/2
CLOCK/2
313
1
314
PAL = 132
NTSC = 122
2
315
3
ODD FIELD
CLOCK/2
CLOCK/2
VERTICAL BLANK
VERTICAL BLANK
EVEN FIELD
316
4
PAL = 132
NTSC = 122
PAL = 864
NTSC = 858
317
5
Cb
CLOCK/2
CLOCK/2
318
CLOCK/2
6
CLOCK/2
Y
319
Cr
7
Y
320
Cb
Cb
21
Y
334
22
Cr
DISPLAY
335
23
Y
DISPLAY
336