CD22402 Datasheet, PDF (10/11 Pages) Harris Corporation – Sync Generator for TV Applications and Video Processing Systems

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
4 CLKS
2 CLKS
2 CLKS
SEE NOTES 7, 8
16 CLKS
NOTES:
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.
V_DD
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
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