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ADV7172 Datasheet(PDF) 18 Page - Analog Devices |
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ADV7172 Datasheet(HTML) 18 Page - Analog Devices |
18 / 59 page ADV7172/ADV7173 –18– REV. A ANALOG VIDEO H F V Figure 26. Timing Mode 0 Data Transitions (Master Mode) Mode 1: Slave Option HSYNC, BLANK, FIELD (Timing Register 0 TR0 = X X X X X 0 1 0) In this mode the ADV7172/ADV7173 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 ADV7172/ADV7173 automatically blanks all normally blank lines as per CCIR-624. Mode 1 is illustrated in Figure 27 (NTSC) and Figure 28 (PAL). 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 283 284 285 ODD FIELD EVEN FIELD DISPLAY DISPLAY VERTICAL BLANK HSYNC BLANK FIELD 522 523 524 525 123 4 5 67 8 9 10 11 20 21 22 DISPLAY DISPLAY VERTICAL BLANK ODD FIELD EVEN FIELD HSYNC BLANK FIELD Figure 27. Timing Mode 1 (NTSC) |
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