CD22402 View Datasheet(PDF) - Harris Semiconductor

Part Name

Description

Manufacturer

CD22402

Sync Generator for TV Applications and Video Processing Systems

Harris Semiconductor 

Timing Waveforms (Continued)

LINE 2

LINE 3

PIN 5

PIN 7

1 CLK

15

CLKS

CD22402

LINE 6

LINE 7

4

CLKS

LINE 265 (315)

PIN 5

2 CLKS

LINE 265-1/2 (315-1/2)

2 CLKS

4 CLKS

LINE 268-1/2 (318-1/2) LINE 269 (319)

1 CLK

PIN 7

15 CLKS

NOTES:

4 CLKS

2 CLKS

2 CLKS

SEE NOTES 7, 8

16 CLKS

7. Waveforms shown are for 525 line/60Hz, line number in parenthesis are for (625 line/50Hz).

8. Timing widths by clock count; for 525 line, 1 CLK = 1.98µs; for 625 line, 1 CLK = 2µs; 1 horizontal period = 32 CLKS.

FIGURE 10. EXPANDED VERTICAL-TIMING WAVEFORM DETAIL OF SYNC GENERATOR TIMING (MIXED BEAM BLANKING - PIN 7)

Typical Applications (Refer to Application Note AN8742, for more information)

HORIZ. PHASE ADJ.

VDD

MIXED SYNC. OR

COMPOSITE VIDEO INPUT

VERTICAL SYNC

(OPTIONAL)

FROM SHORT

VERTICAL

DRIVE

φ

HORIZ.

SYNC

RESTORER

VERT.

100pF

GEN LOCK 10kΩ

OSC.

FROM POWER LINE

ZERO

FOR LINE-LOCK

CROSSING

PLL

OPERATION

DETECTOR

AUTO GEN

LOCK 1MΩ

CONTROL

20 19

4

11

10

7

8

13

6

14

22

9

24

16

1

5

21

HORIZONTAL DRIVE

HORIZONTAL CLAMP

MIXED BEAM (CATHODE) BLANKING

MIXED PROCESSING BLANKING

HORIZONTAL PROCESSING BLANKING

VERTICAL DRIVE

SHORT VERTICAL DRIVE

MIXED SYNC

CRYSTAL

OSC.

1MΩ

100pF

23

15

2

17

3, 12 18

FRAME SYNC OUTPUT (ODD FIELD)

VERTICAL PROCESSING BLANKING OUTPUT

OPERATION SWITCH FOR 525-LINE OR

625-LINE RASTER

FIGURE 11. TYPICAL APPLICATION IN A TV CAMERA

8-71

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