TA1383AFG Datasheet, PDF (34/47 Pages) Toshiba Semiconductor – NTSC Chroma Decoder, Multi-Point Scan Sync Processor, H/V Frequency Counter IC for Color TV

Note No.
Characteristic
SY04 NTSC
horizontal sync separation level
SY05 NTSC
vertical sync separation level
TA1383AFG
SW2
A
A
SW Mode
SW4 SW9
C
ON
C
ON
SW30
Test Method
C (1) Set SA 00H data to 80H.
(2) Input 15.734-kHz composite video signal to Y1/SYNC1 IN. Set sync signal amplitude to 0.286 V_p-p.
(3) Decrease horizontal sync signal amplitude of line 21 of field 1 in pedestal direction.
(4) Monitor #3 (SYNC OUT). When no sync signal on line 21 of field 1 is detected, measure input signal sync
amplitude of line 21, and determine sync separation level VthH10.
(5) Set SA 01H data to 90H.
(6) Repeat steps (3) and (4) above and determine sync separation level VthH11.
(7) Set SA 01H data to A0H.
(8) Repeat steps (3) and (4) above and determine sync separation level VthH12.
(9) Set SA 01H data to B0H.
(10) Repeat steps (3) and (4) above and determine sync separation level VthH13.
C (1) Set SA 00H data to 80H.
(2) Input 15.734-kHz composite video signal to Y1/SYNC1 IN. Set sync signal amplitude to 0.286 V_p-p.
(3) Decrease vertical sync signal amplitude of first half of line 4 of field 1 in pedestal direction.
(4) Monitor #15 (VD OUT). When VD pulse start phase shifts to line 5, measure input signal sync amplitude of
line 4, and determine sync separation level VthV10.
(5) Set SA 01H data to 84H.
(6) Repeat steps (3) and (4) above and determine sync separation level VthV11.
(7) Set SA 01H data to 88H.
(8) Repeat steps (3) and (4) above and determine sync separation level VthV12.
(9) Set SA 01H data to 8CH.
(10) Repeat steps (3) and (4) above and determine sync separation level VthV13.
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2005-09-05