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TB1227CNG Datasheet(PDF) 75 Page - Toshiba Semiconductor

Part No. TB1227CNG
Description  VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR PAL / NTSC / SECAM SYSTEM COLOR TV
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Maker  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
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TB1227CNG Datasheet(HTML) 75 Page - Toshiba Semiconductor

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TB1227CNG
2004-05-24
75
TEST CONDITION (Unless otherwise specified : H, RGB VCC = 9V ; VDD, Fsc VDD, Y / C VCC = 5V ; Ta = 25±3°C ; BUS = preset value)
SW MODE
SUB-ADDRESS & BUS DATA
NOTE
ITEM
S21 S22 S31 S33 S34 S51
01H 05H 08H 0CH 0DH 0EH
MEASURING METHOD
T26
Blanking Pulse Output
Level
B
B
B
B
B
A
80H 10H 04H 80H 80H 80H
(1) Input synchronizing signal of 0.3V in amplitude to pin 51 (Sync IN)
(2) Connect pin 21 (Digital Ys) and pin 22 (Analog Ys) to ground.
(3) Set bus data so that blanking is on.
(4) Measure voltage of pin 13 (G OUT) in V. blanking period (Vv).
(5) Measure voltage of pin 13 (G OUT) in H. blanking period (Vh).
T27
Blanking Pulse Delay
Time
——
In the setting condition of the Note T26, find “tdon” and “tdoff” (see figure
below) between the signal impressed to pin 6 (BFP IN) and output
signal of pin 13 (G OUT).
T28
RGB Min. Output
Level
00H
00H 00H 00H
(1) Short circuit pin 31 (Y IN), pin 33 (B-Y IN) and pin 34 (R-Y IN) in
AC coupling.
(2) Input synchronizing signal of 0.3V in amplitude to pin 51 (Sync IN).
(3) Connect pin 21 (Digital Ys) and pin 22 (Analog Ys) to ground.
(4) Set bus data so that brightness and RGB cutoff are minimum.
(5) Measure video voltage of pin 13 (G OUT) (Vmn).
(1) Short circuit pin 33 (B-Y IN) and pin 34 (R-Y IN) in AC coupling.
(2) Input stepping signal to pin 31 (Y IN) and synchronizing signal of
0.3V in amplitude to pin 51 (Sync IN).
T29
RGB Max. Output
Level
80H
1fH 44H 80H 80H 80H
(3) Connect pin 21 (Digital Ys) and pin
22 (Analog Ys) to ground.
(4) Set bus data so that contrast and Y
sub contrast are maximum.
(5) While increasing amplitude of the
stepping signal, measure maximum
output level just before video signal
of pin 13 (G OUT) is distorted (Vmn).


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