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參數(shù)資料
| 型號(hào)： | TB1254N |
| 廠商： | Toshiba Corporation |
| 英文描述： | PAL / NTSC / SECAM 1CHIP (IF+VCD PROCESSOR) IC |
| 中文描述： | PAL / NTSC制式/ SECAM制式1CHIP（中頻光碟處理器）芯片 |
| 文件頁(yè)數(shù)： | 9/58頁(yè) |
| 文件大?。?/td> | 551K |
| 代理商： | TB1254N |
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Ver3.7
00/01/28
9
PIN NAME
FUNCTION
INTERFACE
38
SYNC IN
An input terminal for Sync signal.
The input sync chip is clamped by
charging/discharging the coupling capacitors
so as to align the Sync slice level, therefore
input through low impedance buffer.
(input level 1Vp-p/140IRE)
38
33
31
1k
6k
24k
832
3VF
39
Y IN
An input terminal for Y signal.
The pedestal level is clamped by means of
charging/discharging the coupling capacitor,
therefore input through low impedance buffer.
(1Vp-p/140IRE input level)
39
1k
1k
1k
<Amp>
<Clamp> <read Bus>
42
19
40
DC RESTOR
A terminal to be connected with a capacitor to
detect the average picture level for DC
restoration.
The ratio of the DC restoration is set by bus.
Leave this terminal open if the DC restoration
is not required.
40
19
42
10k
50k
41
MON OUT
An output terminal of AV SW monitor.
The input signal for pin # 46/48 is output
through 6dB amplifier .
(output level 2Vp-p/140IRE)
41
19
14
8k
8k
2V
42
Y/C VCC
An Vcc terminal for Y/C circuit.
Supply 5V.
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