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參數(shù)資料
| 型號(hào)： | AN5693 |
| 廠商： | Panasonic Corporation |
| 英文描述： | Luminance,Chroma and Sync. Signals Processing ICwith Built-in I2Cbus Interfacefor PAL/NTSC Color-TV |
| 中文描述： | 亮度，色度和同步。信號(hào)處理ICwith內(nèi)置I2Cbus Interfacefor PAL / NTSC制式彩色電視 |
| 文件頁數(shù)： | 29/34頁 |
| 文件大?。?/td> | 325K |
| 代理商： | AN5693 |
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29
ICs for TV
AN5693K
I
Technical Data (continued)
Outline of major blocks (continued)
Chroma (continued)
(4) Killer output pin is available for system identification by MICOM.
(Killer"On"
→
0 V : Either color signal is not properly detected due to wrong system settig, or the color signal
field strength is too weak.
Killer"Off"
→
5 V : Color signal is properly detected.)
When killer is on, according to the MICOM control sequence,the mode and VCO frequency will be switched
by means of the I
2
C bus.
(5) During SECAM, the color difference output pins are put into high impedance.
(6) AN5344(color-compensation IC)and other types of feature IC can be connected because color difference
input pins are available.
(7) It is possible for South American set application.
(three-normal system : NTSC M,PAL M,PAL N).
7
8
47
V
CC1
SW
Note) For PAL M, crystal MEIDEN 3575 & C
=
18 pF are used.
For PAL N, crystal MEIDEN 3012-M & C
=
22 pF are used.
In order to extend downwards the
β
curve, a capacitor of 2 pF to 4 pF is added between Pin7 and GND.
(8) PAL/NTSC, SECAM interface(Pin 47)
Input Signal
DC
f
C
AC Level
4.43 MHz
about 1.3 V
4.43 MHz
300 mV
PP
3.58 MHz
about 1.3 V
X
X
SECAM
*1
about 4.6 V
4.43MHz
300 mV
PP
B/W
*2
about 1.3 V
300 mV
PP
Note) *1: 4.43 MHz AC component is output during vertical retrace period, is as shown below.
V-sync.
300 mV
PP
Pin47
V blank
(RGB out)
about DC 4.6 V
Input
300 mV
PP
Pin47
about DC 1.3 V
about 80 ms
Note) *2: Eventhough the MICOM switches the VCO between 4.43MHz and 3.58MHz, only the 4.43 MHz CW will be
outputed at periodic intervals as shown below.
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