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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)： | 83/94頁 |
| 文件大?。?/td> | 1292K |
| 代理商： | TB1227CNG |
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TB1227CNG
2004-05-24
83
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
22
S
31
S
33
S
34
S
51
—
—
—
01H
06H
—
—
NOTE
ITEM
S
21
—
—
MEASURING METHOD
T
55
Analog RGB Dynamic
Range
B
A
B
B
B
A
—
—
—
—
00H
—
—
—
—
(1) Input 0.3V synchronizing signal to pin 51 (Sync IN).
(2) Supply 5V of external supply voltage to pin 22 (Analog Ys).
(3) Set bus data so that contrast is minimum and drive is set at center
value.
(4) While inputting stepping signal to pin 24 (Analog G IN), increase
video amplitude gradually from 0.
(5) Measure video amplitude of pin 24 when video voltage of pin 13
(G OUT) does not change.
T
56
RGB Brightness
Control Characteristic
↑
↑
↑
↑
↑
↑
—
—
—
FFH
00H
—
—
—
—
—
T
57
RGB Brightness
Center Voltage
↑
↑
↑
↑
↑
↑
—
—
—
80H
—
—
—
—
—
T
58
RGB Brightness Data
Sensitivity
↑
↑
↑
↑
↑
↑
—
—
—
—
—
—
—
—
—
(1) Short circuit pin 31 (Y IN), pin 33 (B-Y IN) and pin 34 (R-Y IN) in
AC coupling.
(2) Input 0.3V synchronizing signal to pin 51 (Sync IN).
(3) Set bus data on RGB cutoff at center value.
(4) Supply 5V of external supply voltage to pin 22 (Analog Ys).
(5) While changing data brightness from maximum to minimum,
measure maximum and minimum voltages of pin 13 (G OUT) in
video period. (max : Vbrmx, min : Vbrmn)
(6) Set bus data on brightness at center value and measure video
voltage of pin 13 (G OUT) (Vbcnt).
(7) On the condition that bus data with which Vbrmx is obtained in
measurement of the above step 5 is Dbrmx and bus data with
which Vbrmn is obtained in measurement of the above step 5 is
Dbrmn, calculate sensitivity of brightness data (
Vbrt).
Vbrt = (Vbrmx
Vbrmn) / (Dbrmx
Dbrmn)
T
59
Analog RGB Mode
ON Voltage
↑
↑
↑
↑
↑
↑
—
—
—
80H
—
—
—
—
—
(1) Input TG7 sine wave signal (f = 100kHz, video amplitude = 0.3V) to
pin 23 (Analog R IN).
(2) Supply 5V of external supply voltage to pin 22 (Analog Ys) and
raise the voltage gradually from 0V.
(3) Measure voltage at pin 22 when signal 1 is output from pin 14 (R
OUT) (Vanath).
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