TA1383AFG Datasheet, PDF (35/47 Pages) Toshiba Semiconductor – NTSC Chroma Decoder, Multi-Point Scan Sync Processor, H/V Frequency Counter IC for Color TV

Note No.
Characteristic
SY06 1125I/60-Hz
horizontal sync separation level
SY07 1125I/60-Hz
vertical sync separation level
TA1383AFG
SW2
C
C
SW Mode
SW4 SW9
C
ON
C
ON
SW30
Test Method
A (1) Set SA 00H data to C4H.
(2) Input 33.75-kHz (1125I/60-Hz) video signal to D-SYNC1/Y3 IN. Monitor #30 (D-SYNC1/Y3 IN) and measure
sync tip DC voltage Vsync30.
(3) Apply external voltage to #30 via 100 kΩ. Increase voltage from Vsync30.
(4) Monitor #17 (HD OUT). When phase is unlocked from input sync signal, measure #30 sync tip voltage.
Determine difference from Vsync30, VthH20.
(5) Set SA 01H data to 90H.
(6) Repeat steps (3) and (4) above and determine sync separation level VthH21.
(7) Set SA 01H data to A0H.
(8) Repeat steps (3) and (4) above and determine sync separation level VthH22.
(9) Set SA 01H data to B0H.
(10) Repeat steps (3) and (4) above and determine sync separation level VthH23.
A (1) SA 00H data to C4H.
(2) Input 33.75-kHz (1125I/60-Hz) video signal to D-SYNC1/Y3 IN. Monitor #30 (D-SYNC1/Y3 IN) and measure
sync tip DC voltage Vsync30.
(3) Apply external voltage to #30 via 100 kΩ. Increase voltage from Vsync30.
(4) Monitor #17 (HD OUT). When phase is unlocked from input sync signal, measure #30 sync tip voltage.
Determine difference from Vsync30, VthV20.
(5) Set SA 01H data to 84H.
(6) Repeat steps (3) and (4) above and determine sync separation level VthV21.
(7) Set SA 01H data to 88H.
(8) Repeat steps (3) and (4) above and determine sync separation level VthV22.
(9) Set SA 01H data to 8CH.
(10) Repeat steps (3) and (4) above and determine sync separation level VthV23.
35
2005-09-05