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TB1227CNG Datasheet(PDF) 57 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) 57 Page - Toshiba Semiconductor

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TB1227CNG
2004-05-24
57
TEST CONDITION
Unless otherwise specified : H, RGB VCC = 9V ; VDD, Fsc VDD, Y / C VCC = 5V ; Ta = 25±3°C ; BUS = preset value ;
pin 51 input video signal = 50 system
(Note) “×” in the data column represents preset value at power ON.
NOTE
ITEM
SUB-ADDRESS & BUS DATA
MEASURING METHOD
DH26 Noise Detection
Level 1
DH27 Noise Detection
Level 2
DH28 Noise Detection
Level 3
DH29 Noise Detection
Level 4
Sub 1DH
0
0
1
1
0
1
0
1
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
(1) Input such a signal as shown by “a” of the following figure to pin 51.
(2) Set bus data as indicated in the first line of the left table.
(3) Measure NLX when amplitude of pin 41 changes. → NL1
(4) Set bus data as indicated in the second line of the left table.
(5) Measure NLX when amplitude of pin 41 changes. → NL2
(6) Set bus data as indicated in the third line of the left table.
(7) Measure NLX when amplitude of pin 41 changes. → NL3
(8) Set bus data as indicated in the fourth line of the left table.
(9) Measure NLX when amplitude of pin 41 changes. → NL4
DV1
V. Ramp Amplitude
(1) Measure amplitude of V. ramp waveform of pin 52.
DV2
V. NF Maximum
Amplitude
Sub 17H
1
1
1
1
1
1
1
×
(1) Set data bus as indicated on the left.
(2) Measure amplitude of pin 54’s signal.
DV3
V. NF Minimum
Amplitude
Sub 17H
0
0
0
0
0
0
0
×
(1) Set data bus as indicated on the left.
(2) Measure amplitude of pin 54’s signal.


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