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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 |
| 文件頁數(shù)： | 18/58頁 |
| 文件大?。?/td> | 551K |
| 代理商： | TB1254N |
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Ver3.7
00/01/28
18
ITEMS
AFC Gain
Sub; 1A h
BITS
2
DESCRIPTIONS
Select AFC gain
00: Normal
01: 1 / 3 sensitivity
10: X 3 at V blanking duration
11: AFC OFF
0: off
1: on
H OUT stop
0: normal
Synchronize the V freq. to 312/313
0: normal
V AGC sensitivity
0: normal
Vertical size alignment
00: -40 %
V linearity alignment
0: 16 % at upper side , -20 % at lower side
~ F: -14 % at upper side , 17.5 % at lower side
V-S correction
0: 12 % at upper side , 15 % at lower side
~ F: -12 % at upper side , -15 % at lower side
Select the reference voltage
0: External(YC Vcc) 1: Internal
PRESET
00:Normal
V-stop
Sub; 17 h
H STP
Sub; 17 h
312/313 Mode
Sub; 17 h
V-AGC
Sub; 17 h
Vertical Size
Sub; 1A h
V Linearity
Sub; 19 h
1
0:off
1
1 & Y-mute & RGB mute; H STOP
0:normal
1
1: TELETXT(312/313) Forced sync
0:normal
1
1: X 5
0:normal
6
~ 3F: 40 %
100000:0%
4
1000:0%
V-S Correction
Sub; 19 h
4
1000:0%
V Ramp Ref.
Sub; 17 h
1
0:External
AV SW, OTHERS
ITEMS
Video SW
Sub; 06 h
BITS
2
DESCRIPTIONS
Video input selecting switch
00: TV (10: TV + C in)
01: EXT (11: EXT + C in)
Audio input selecting Switch
0: TV
Stand by mode
00,01: normal
10 : IF
(Working IF Block ,IICBUS and 443VCXO)
11 : STD-by
(Working IICBUS and 443VCXO )
Selecting out put on AFT terminal for self Adjustment
00: AFT (Normal) 10: RF AGC X 1/2
For testing / Leave these bits preset data ; 0000 0000
PRESET
00:TV
Au SW
Sub; 06 h
STD by Mode
Sub; 0D h
1
1: EXT
0:TV
2
00,:normal
Self Test
Sub; 0E h
TEST
Sub; 1F h
2
00:AFT
(Normal)
00000000
8
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