- 您现在的位置：买卖IC网 > PDF目录98183 > TC90A49F Y/C SEPARATOR IC, PDSO24 PDF资料下载
参数资料
| 型号： | TC90A49F |
| 元件分类： | 信号分离 |
| 英文描述： | Y/C SEPARATOR IC, PDSO24 |
| 封装： | 0.450 INCH, 1.27 MM PITCH, PLASTIC, SOP-24 |
| 文件页数： | 17/17页 |
| 文件大小： | 497K |
| 代理商： | TC90A49F |
TC90A49P/F
2001-03-06 9/17
9.
Color killer circuit
When the input video signal is a monochrome image, this circuit enables effective use of the luminance signal
information regardless of whether there is a burst signal. It does this by preventing the chroma signal output
from the comb filter from being subtracted from the luminance signal.
While the VBI signal is active it is better not to use the comb function. Setting the KILLER pin to High at this
time enables the use of character multiplex and other signals from the Y output unchanged.
10. RESET / TEST pin
Switches between normal comb operation and test operation. Also used for I2C bus reset input. Change in
voltage from Low to High triggers a reset. Normal use is Low.
11. I
2
C bus interface
Some functions and setting values can be selected using the I2C bus. The data transfer format conforms to the
Philips I2C bus format.
Data transfer format
S
Slave address (8 bit)
A
DATA1
A
DATA2
A
DATA3
A
P
S : start condition
A : acknowledge
P : end condition
Slave address : B4 (HEX)
12. I
2
C bus control contents : When a reset signal is input, all the following bits are
zero-cleared.
MSB
bit7
bit6
bit5
bit4
bit3
bit2
bit1
LSB
bit0
DATA1
MODE2
MODE1
MODE0
VENH2
VENH1
VENH0
PDSOFF
CB
DATA2
VNLR3
VNLR2
VNLR1
VNLR0
GSEL1
GSEL0
COR1
COR0
DATA3
TRAP
CHTRAP
Fixed to 0
CBPF
Fixed to 0
ENHOFF
Mode 2 to Mode 0 : Select video signal format.
000 : Analog Through Mode 001 : M-PAL 010 : N-PAL 011 : PAL 100 : NTSC
When Analog Through mode is selected, input video signals are output to Yout and Cout unchanged. In
Analog Through mode, the delay time for output signals differs from those used for other modes. Therefore,
when changing modes to Analog Through mode, to decide the input signal format, provide some delay time
until an image is displayed.
There is a case where a 1 LSB error voltage at frequency fsc is multiplexed with the output signal. When
deciding the input signal format, to avoid an erroneous decision due to fsc leakage, be careful when setting
the decision sensitivity (killer sensitivity).
When the input signal is SECAM or 4.43 NTSC, select Analog Through mode. A separate BELL filter or a
BPF is required.
相关PDF资料 |
PDF描述 |
|---|---|
| TC90A49P | Y/C SEPARATOR IC, PDIP20 |
| TC90A53N | Y/C SEPARATOR IC, PDIP28 |
| TC90A58F | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| TC90A60U | TELETEXT AND VPS/PDC DECODER, PQFP44 |
| TC90A66F | PICTURE-IN-PICTURE IC, PQFP144 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC90A49P | 制造商:Panasonic Industrial Company 功能描述:IC |
| TC90A53F | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:3-LINE DIGITAL Y / C SEPARATOR IC |
| TC90A53N | 制造商:Panasonic Industrial Company 功能描述:IC |
| TC90A58F | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:3-Channel AD Converter |
| TC90A60U | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:DATA SLICE IC FOR VIDEO MULTIPLEX BROADCAST RECEIVER |
发布紧急采购，3分钟左右您将得到回复。