ADV7172KST 查看數據表（PDF） - Analog Devices

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ADV7172KST

Digital PAL/NTSC Video Encoder with Six DACs (10 Bits), Color Control and Enhanced Power Management

Analog Devices 

ADV7172/ADV7173

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).

DISPLAY

VERTICAL BLANK

DISPLAY

522 523 524 525

1

2

3

4

5

6

7

8

9

10

11

HSYNC

BLANK

FIELD

EVEN FIELD ODD FIELD

DISPLAY

VERTICAL BLANK

20

21

22

DISPLAY

260 261 262 263 264 265 266 267 268 269 270 271 272 273 274

HSYNC

BLANK

FIELD

ODD FIELD EVEN FIELD

Figure 27. Timing Mode 1 (NTSC)

283 284 285

–18–

REV. B

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