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TB1227CNG Datasheet(PDF) 54 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) 54 Page - Toshiba Semiconductor

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TB1227CNG
2004-05-24
54
DEF SECTION
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
DH1
H. Reference
Frequency
Sub 02H
0
0
0
0
0
0
0
1
(1) Supply 5V to pin 26.
(2) Set bus data as indicated on the left.
(3) Measure the frequency of sync. output of pin 49.
DH2
H. Reference
Oscillation Start
Voltage
Sub 02H
0
0
0
0
0
0
0
1
In the test condition of the Note DH1, turning down the voltage supplied to pin 26 from 5V, measure the voltage
when oscillation of pin 49 stops.
DH3
H. Output
Frequency 1
Sub 10H
×
×
×
×
×
×
0
1
(1) Set bus data as indicated on the left.
(2) In the condition of the above step 1, measure frequency (TH1) at pin 4.
DH4
H. Output
Frequency 2
Sub 10H
×
×
×
×
×
×
1
0
(1) Set the input video signal of pin 51 to the 60 system.
(2) Set bus data as indicated on the left.
(3) In the above-mentioned condition, measure frequency (TH2) at pin 4.
DH5
H. Output Duty 1
(1) Supply 4.5V DC to pin 5 (or, make pin 5 open-circuited).
(2) Measure duty of pin 4 output.
DH6
H. Output Duty 2
(1) Make a short circuit between pin 5 and ground.
(2) Measure duty of pin 4 output.
DH7
H. Output Duty
Switching Voltage
— Supply 2V DC to pin 5. While turning down the voltage from 2V, measure voltage when the output duty ratio
becomes 41 to 37%.
DH8
H. Output Voltage
Measure the low voltage and high voltage of pin 4 output whose waveform is shown below.
DH9
H. Output Oscillation
Start Voltage
— While raising H. VCC (pin 3) from 0V, measure voltage when pin 4 starts oscillation.


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