ta1383afg TOSHIBA Semiconductor CORPORATION, ta1383afg Datasheet - Page 45

• Manufacturer Part Number: ta1383afg
• Description: Ntsc Chroma Decoder, Multi-point Scan Sync Processor, H/v Frequency Counter Ic For Color Tv
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Application Circuit 2 (How to measure H/V frequency)
doesn’t lock in the regular frequency, the frequency of pulse (A) will not be correct and the H/V frequency data will
not be showed correct data.
under consideration the factors such as signal strength, existence of ghost signal, APC stability, I
transmission and so on via prototype TV set evaluation.
This IC’s H/V frequency counting is done by internal pulse (A) which is made in APC circuit. So, if APC circuit
Decision algorithm of H/V frequency detection (detection range, detection times and so on) should be determined
D-SYNC2-IN
(for H/V freq.
counter)
C1-IN
C2-IN
16
19
6
TA1383
45
COUNTER
FREQ
APC
Internal pulse (A)
BUS READ
TA1383AFG
2005-09-05
2
C BUS data