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参数资料
| 型号： | TVP5150AZQC |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PBGA48 |
| 封装： | PLASTIC, BGA-48 |
| 文件页数： | 15/74页 |
| 文件大小： | 439K |
| 代理商： | TVP5150AZQC |
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2.17 Genlock Control and RTC
A Genlock control (GLCO) function is provided to support a standard video encoder to synchronize its internal color
oscillator for properly reproduced color with unstable timebase sources like VCRs.
The frequency control word of the internal color subcarrier digital control oscillator (DTO) and the subcarrier phase
reset bit are transmitted via terminal 23 (GLCO). The frequency control word is a 23-bit binary number. The frequency
of the DTO can be calculated from the following equation:
dto
ctrl
sclk
F
=
x
23
2
where Fdto is the frequency of the DTO, Fctrl is the 23-bit DTO frequency control, and Fsclk is the frequency of the
SCLK.
2.17.1 TVP5150A Genlock Control Interface
A write of 1 to bit 4 of the chrominance control register at I2C subaddress 1Ah causes the subcarrier DTO phase reset
bit to be sent on the next scan line on GLCO. The active low reset bit occurs 7 SCLKs after the transmission of the
last bit of DCO frequency control. Upon the transmission of the reset bit, the phase of the TVP5150A internal
subcarrier DCO is reset to zero.
A Genlock slave device can be connected to the GLCO terminal and uses the information on GLCO to synchronize
its internal color phase DCO to achieve clean line and color lock.
Figure 26 shows the timing diagram of the GLCO mode.
SCLK
GLCO
23-Bit Frequency Control
Start Bit
DCO Reset Bit
MSB
>128 SCLK
1 SCLK
7 SCLK
23 SCLK
1 SCLK
LSB
22
21
0
Figure 26. GLCO Timing
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| TVP5150PBS | 功能描述:编码器、解码器、复用器和解复用器 VERY LOW POWER VIDEO DECODER RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| TVP5150PBS | 制造商:Texas Instruments 功能描述:IC DECODER VIDEO SMD |
| TVP5150PBSG4 | 功能描述:视频 IC VERY LOW POWER VIDEO DECODER RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5150PBSR | 功能描述:视频 IC Very Low Power Video Decoder RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5150PBSRG4 | 制造商:Texas Instruments 功能描述: |
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