ta1383afg TOSHIBA Semiconductor CORPORATION, ta1383afg Datasheet - Page 40

• 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

Note No.
SY14
SY15
Clamp pulse phase and width
Noise detection
Characteristic
SW2
C
A
SW4
C
C
SW Mode
SW9
ON
ON
SW30
A
C
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(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.
(1)
(2)
(3)
(4)
Set SA 00H data to C0H. Input 15.734-kHz composite video signal to D-SYNC1/Y3 IN.
Set SA 02H data to 86H.
Monitor TP8 (MONITOR OUT) and #30 pin waveforms. Measure clamp pulse phase CPS0 and width CPW0.
Set SA 00H data to C2H. Input signal c (T = 31.75 µs, t = 2.35 µs) to D-SYNC1/Y3 IN.
Monitor TP8 (MONITOR OUT) and #30 pin waveforms. Measure clamp pulse phase CPS1 and width CPW1.
Set SA 00H data to C4H. Input signal c (T = 29.63 µs, t = 2 µs) to D-SYNC1/Y3 IN.
Monitor TP8 (MONITOR OUT) and #30 pin waveforms. Measure clamp pulse phase CPS2 and width CPW2.
Set SA 00H data to C6H. Input signal c (T = 22.22 µs, t = 1.65 µs) to D-SYNC1/Y3 IN.
Monitor TP8 (MONITOR OUT) and #30 pin waveforms. Measure clamp pulse phase CPS3 and width CPW3.
Set SA 00H data to 80H.
Input 500-kHz sine wave to Y1/SYNC2 IN. Increase sine wave amplitude from 0 V
N-DET changes from 0 to 1, measure amplitude NHi00.
Input 500-kHz sine wave to Y1/SYNC2 IN. Decrease sine wave amplitude from 1.0 V
1 N-DET changes from 1 to 0, measure amplitude NLow00.
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.
40
TP8 Pin Waveform
Test Method
Signal c
t
CPS*
0.286 V
CPW*
T
p-p
. When READ MODE 1
p-p
. When READ MODE
TA1383AFG
2005-09-05