TA1383AFG Datasheet, PDF (40/47 Pages) Toshiba Semiconductor – NTSC Chroma Decoder, Multi-Point Scan Sync Processor, H/V Frequency Counter IC for Color TV

Note No.
Characteristic
SY14 Clamp pulse phase and width
SY15 Noise detection
TA1383AFG
SW2
C
SW Mode
SW4 SW9
C
ON
SW30
Test Method
A (1) Set SA 00H data to C0H. Input 15.734-kHz composite video signal to D-SYNC1/Y3 IN.
(2) Set SA 02H data to 86H.
(3) Monitor TP8 (MONITOR OUT) and #30 pin waveforms. Measure clamp pulse phase CPS0 and width CPW0.
(4) Set SA 00H data to C2H. Input signal c (T = 31.75 µs, t = 2.35 µs) to D-SYNC1/Y3 IN.
(5) Monitor TP8 (MONITOR OUT) and #30 pin waveforms. Measure clamp pulse phase CPS1 and width CPW1.
(6) Set SA 00H data to C4H. Input signal c (T = 29.63 µs, t = 2 µs) to D-SYNC1/Y3 IN.
(7) Monitor TP8 (MONITOR OUT) and #30 pin waveforms. Measure clamp pulse phase CPS2 and width CPW2.
(8) Set SA 00H data to C6H. Input signal c (T = 22.22 µs, t = 1.65 µs) to D-SYNC1/Y3 IN.
(9) Monitor TP8 (MONITOR OUT) and #30 pin waveforms. Measure clamp pulse phase CPS3 and width CPW3.
(10) Set SA 00H data to CCH. Input signal c (T = 14.815 µs, t = 1.15 µs) to D-SYNC1/Y3 IN.
(11) Monitor TP8 (MONITOR OUT) and #30 pin waveforms. Measure clamp pulse phase CPS4 and width CPW4.
(12) Set SA 00H data to FEH. Input signal c (T = 31.75 µs, t = 2.35 µs, amplitude = 1.5 V) to D-SYNC1/Y3 IN.
(13) Monitor TP8 (MONITOR OUT) and #30 pin waveforms. Measure clamp pulse phase CPS5 and width CPW5.
Signal c
TP8 Pin Waveform
T
t
0.286 V
CPS*
CPW*
A
C
ON
C (1) Set SA 00H data to 80H.
(2) Input 500-kHz sine wave to Y1/SYNC2 IN. Increase sine wave amplitude from 0 V_p-p. When READ MODE 1
N-DET changes from 0 to 1, measure amplitude NHi00.
(3) Input 500-kHz sine wave to Y1/SYNC2 IN. Decrease sine wave amplitude from 1.0 V_p-p. When READ MODE
1 N-DET changes from 1 to 0, measure amplitude NLow00.
(4) As in steps (1) and (2) above, set SA 02H (NOISE LVL) data to 88H, 90H, and 98H, and measure respective
amplitudes NHi01, NLow01, NHi0, NLow10, NHi11, and Nlow11.
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2005-09-05