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參數(shù)資料
| 型號： | TB1227CNG |
| 廠商： | Toshiba Corporation |
| 英文描述： | VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR PAL / NTSC / SECAM SYSTEM COLOR TV |
| 中文描述： | 視頻，色度和同步信號處理集成電路的PAL / NTSC制式/ SECAM制式彩電 |
| 文件頁數(shù)： | 77/94頁 |
| 文件大小： | 1292K |
| 代理商： | TB1227CNG |
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TB1227CNG
2004-05-24
77
TEST CONDITION (Unless otherwise specified : H, RGB V
CC
= 9V ; V
DD
, Fsc V
DD
, Y / C V
CC
= 5V ; Ta = 25±3°C ; BUS = preset value)
SW MODE
SUB-ADDRESS & BUS DATA
S
19
S
20
S
21
S
22
S
31
S
33
S
51
—
15H
1CH
—
—
NOTE
ITEM
S
18
—
—
MEASURING METHOD
T
35
Text RGB Output,
High Level
A
A
A
A
B
B
B
A
—
02H
80H
—
—
—
—
T
36
OSD Ys ON, Low
Level
↑
↑
↑
↑
↑
↑
↑
↑
—
↑
↑
—
—
—
—
T
37
OSD RGB Output,
High Level
↑
↑
↑
↑
↑
↑
↑
↑
—
↑
↑
—
—
—
—
(1) Input stepping signal whose amplitude is 0.3V in video period to pin
31 (Y IN) and pin 51 (Sync IN).
(2) Set bus data so that blanking and halftone are off.
(3) Connect power supply to pin 21 (Digital Ys). While impressing 0V
to it, measure pedestal level of pin 13 output signal (G OUT)
(Vpl13).
(4) Connect power supply to pin 19 (Digital G IN) and impress it with
2V.
(5) Raising supply voltage to pin 21 gradually from 0V, measure video
level of pin 21 after output signal of pin 13 changed (Vlx13).
(6) From measurement results of the above steps 3 and 5, calculate
high level in the text mode.
Vmt13 = Vtx13
Vpt13
(7) Raising supply voltage to pin 21 further from that in the step 5,
measure level (Vtost) of pin 21 when the level of pin 13 output
signal changes from that in the step 5 to
6dB as halftone data is
set to ON (the 6th step of Notes T
30
to T
34
).
(8) In the condition of the above step 7, raise voltage impressed to pin
19 to 3V and measure output voltage of pin 13 (Vos13).
(9) From results of the above steps 3 and 7, calculate high level of the
output in the OSD mode.
Vmos13 = Vos13
Vpt13
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