an5290s Panasonic Corporation of North America, an5290s Datasheet - Page 5

• Manufacturer Part Number: an5290s
• Description: Antenna Diversity Ic For On-vehicle Tv
• Manufacturer: Panasonic Corporation of North America

■ Technical Information (continued)
2. Timing chart 2
• When PAL reception (in horizontal and vertical synchronization) antenna is selected.
antenna selection is done.
1st field video signal
Horizontal sync. signal
VCO signal
Electric field judgment timing
Noise detection hold
ANT-1 output
ANT-2 output
ANT-3 output
ANT-4 output
Selected antenna
Output for N.C.
(pin 5)
(internal clock of IC)
(Internal clock of IC)
Noise detection output
signal (pin 20)
(pin 19)
(pin 16)
(pin 15)
(pin 14)
(pin 13)
(pin 6)
Electric field judgment and antenna selection timing when the change over from ANT-1 to ANT-3 by the
The antenna selection sequence is as follows:
ANT-1
1H
ANT-2
SDB00011CEB
2H
10.667 µs
(Electric field judgment level)
ANT-3
3H
ANT-4
4H
ANT- 1 2 3 4
5H
5.333 µs
21.333 µs
AN5290S
6H
5