CD22402
Timing Waveforms (Continued)
LINE 2
LINE 3
LINE 6
LINE 7
PIN 5
15
CLKS
1 CLK
PIN 7
4
2 CLKS
LINE 265-1/2 (315-1/2)
2 CLKS
LINE 268-1/2 (318-1/2)
4 CLKS
LINE 269 (319)
CLKS
LINE 265 (315)
PIN 5
1 CLK
PIN 7
15 CLKS
4 CLKS
2 CLKS
SEE NOTES 7, 8
2 CLKS
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)
V
DD
HORIZ. PHASE ADJ.
19
φ
20
HORIZ.
MIXED SYNC. OR
COMPOSITE VIDEO INPUT
SYNC
RESTORER
4
HORIZONTAL DRIVE
11
HORIZONTAL CLAMP
VERT.
10
7
13
MIXED BEAM (CATHODE) BLANKING
MIXED PROCESSING BLANKING
HORIZONTAL PROCESSING BLANKING
VERTICAL SYNC
(OPTIONAL)
8
6
14
FROM SHORT
VERTICAL
DRIVE
100pF
22
GEN LOCK
OSC.
10kΩ
1MΩ
9
16
5
VERTICAL DRIVE
SHORT VERTICAL DRIVE
MIXED SYNC
24
ZERO
FROM POWER LINE
FOR LINE-LOCK
OPERATION
CROSSING
DETECTOR
PLL
1
AUTO GEN
LOCK
CONTROL
21
23
1MΩ
15
17
18
FRAME SYNC OUTPUT (ODD FIELD)
CRYSTAL
OSC.
2
VERTICAL PROCESSING BLANKING OUTPUT
OPERATION SWITCH FOR 525-LINE OR
625-LINE RASTER
3, 12
100pF
FIGURE 11. TYPICAL APPLICATION IN A TV CAMERA
8-49
HARRIS [ HARRIS CORPORATION ]
