ta1383afg TOSHIBA Semiconductor CORPORATION, ta1383afg Datasheet - Page 34

• 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.
SY04
SY05
NTSC
horizontal sync separation level
NTSC
vertical sync separation level
Characteristic
SW2
A
A
SW4
C
C
SW Mode
SW9
ON
ON
SW30
C
C
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10) Repeat steps (3) and (4) above and determine sync separation level VthH13.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10) Repeat steps (3) and (4) above and determine sync separation level VthV13.
Set SA 00H data to 80H.
Input 15.734-kHz composite video signal to Y1/SYNC1 IN. Set sync signal amplitude to 0.286 V
Decrease horizontal sync signal amplitude of line 21 of field 1 in pedestal direction.
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.
Set SA 01H data to 90H.
Repeat steps (3) and (4) above and determine sync separation level VthH11.
Set SA 01H data to A0H.
Repeat steps (3) and (4) above and determine sync separation level VthH12.
Set SA 01H data to B0H.
Set SA 00H data to 80H.
Input 15.734-kHz composite video signal to Y1/SYNC1 IN. Set sync signal amplitude to 0.286 V
Decrease vertical sync signal amplitude of first half of line 4 of field 1 in pedestal direction.
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.
Set SA 01H data to 84H.
Repeat steps (3) and (4) above and determine sync separation level VthV11.
Set SA 01H data to 88H.
Repeat steps (3) and (4) above and determine sync separation level VthV12.
Set SA 01H data to 8CH.
34
Test Method
TA1383AFG
2005-09-05
p-p
p-p
.
.