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TB1227CNG Datasheet(PDF) 51 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) 51 Page - Toshiba Semiconductor

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TB1227CNG
2004-05-24
51
TEST CONDITION (Unless otherwise specified : H, RGB VCC = 9V ; VDD, Fsc VDD, Y / C VCC = 5V ; Ta = 25±3°C)
SW MODE
NOTE
ITEM
S26
S1
S31
S33
S34
S39
S42
S44
S45
S51
MEASURING METHOD
C14
Demodulation
Relative Phase
ON
A
B
B
B
A
A
A
A
B
(1) Activate the test mode (S26-ON, Sub Add 02 ; 08h).
(2) Connect band pass filter (Q = 2), set to TV mode (fo = 600kHz) with 0dB attenuation.
(3) Set the crystal mode to conform to European, Asian system and set the gate to normal
status.
(4) Input 3N, 4N and 4P rainbow color bar signals having 100mVp-p burst to pin 42 of the
chroma input terminal one after another.
(5) Measure phases of color difference signals of pin 36 (B-Y) and pin 35 (R-Y)
respectively, and express them as 3NθR-B, 4NθR-B and 4PθR-B respectively.
(6) For measuring with 3N and 4N color bar signals in NTSC system, set six bars of the B-Y
color difference waveform to the peak level with the Tint control and measure its phase
difference from phase of R-Y color difference signal of pin 35 (R-Y OUT).
(Note)
Relative phase of G-Y color difference signal shall be checked later in the Text
section.
C15
Demodulation
Output Residual
Carrier
(1) Activate the test mode (S26-ON, Sub Add 02 ; 08h).
(2) Connect band pass filter (Q = 2), set to TV mode (fo = 600kHz) with 0dB attenuation.
(3) Set the crystal mode to conform to European, Asian system.
(4) Set the gate to normal status.
(5) Input 3N and 4N rainbow color bar signals having 100mVp-p burst to pin 42 of the
chroma input terminal one after another.
(6) Measure subcarrier leak of 3N and 4N color bar signals appearing in color difference
signals of pin 36 (B-Y OUT) and pin 35 (R-Y OUT) respectively, and express those
leaks as 3N-SCB / R and 4N-SCB / R.


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