ADV7191 Analog Devices, ADV7191 Datasheet - Page 25

• Manufacturer Part Number: ADV7191
• Description: Video Encoder with Six 10-Bit DACs and Video Encoder with Six DAC Outputs
• Manufacturer: Analog Devices

Mode 2: Master Option HSYNC, VSYNC, BLANK
(Timing Register 0 TR0 = X X X X X 1 0 1)
In this mode the ADV7190/ADV7191 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 ADV7190/ADV7191 automatically blanks
all normally blank lines as per CCIR-624. Mode 2 is illustrated in Figure 40 (NTSC) and Figure 41 (PAL). Figure 42 illustrates
the HSYNC, BLANK and VSYNC for an even-to-odd field transition relative to the pixel data. Figure 43 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
ADV7190/ADV7191
Y
334
22
Cr
DISPLAY
335
23
Y
DISPLAY
336