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参数资料
| 型号： | TVP5150PBSG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP32 |
| 封装： | GREEN, PLASTIC, TQFP-32 |
| 文件页数： | 15/27页 |
| 文件大小： | 453K |
| 代理商： | TVP5150PBSG4 |
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Detailed Description
18
SLES043 — September 2002
TVP5150
2.7.4 Phase-Locked Loop
The PLL provides the device with the necessary clocks. Clocks are provided to the ADC, for luma and chroma
processing, audio block, and the scaling blocks.
The self-biasing PLL minimizes jitter and processes environmental variability. It is capable of operating off a
single crystal frequency with a high supply rejection ratio.
2.7.5 Genlock
A Genlock control function is provided to support a standard video encoder to synchronize its internal color
phase DCO for a clean video line and color lock. The Genlock is compatible with the Phillips RTC and the TI
proprietary Genlock schemes.
2.7.6 TVP5150 Genlock Control Interface
The frequency control word of the internal color subcarrier digital control oscillator (DCO) and the subcarrier
phase reset bit are transmitted via the GLCO terminal. The frequency control word is a 23-bit binary number.
The frequency of the DCO can be calculated from the following equation:
Fdco
+ Fctrl
223
Fsclk
Where Fdco is the frequency of the DCO, Fctrl is the 23-bit DCO frequency control, and Fsclk is the frequency
of the SCLK. The last bit (bit 0) of the DCO frequency control is always 0.
A write of 1 to bit 4 of the chrominance control register at HOST PORT sub-address 1Ah causes the sub-carrier
DTO phase reset bit to be sent on the next scan line on GLCO. The active low reset bit occurs 7 SCLK’s after
the transmission of the last bit of DCO frequency control. Upon the transmission of the reset bit, the phase
of the TVP5150 internal subcarrier DCO is reset to zero.
This interface provides a method to signal a subcarrier DTO phase reset on the next scan line.
A genlocking slave device can be connected to the GLCO terminal and use the information on GLCO to
synchronize ins internal color phase DCO to achieve clean line and color lock.
SCLK
GLCO
23-Bit Frequency Control
Start Bit
Reset Bit
MSB
>128 SCLK
1 SCLK
7 SCLK
23 SCLK
1 SCLK
LSB
22
21
0
Figure 2–18. GCLO Timing
2.8
Scaling/Windowing Functionality
2.8.1 Scaling
Scaling can be done vertically and horizontally. The device is able to scale by ratios of:
DOWNSCALE
Vertically
1/32x
Horizontally
1/32x
相关PDF资料 |
PDF描述 |
|---|---|
| TVP5150PBS | COLOR SIGNAL DECODER, PQFP32 |
| TVP5150PBSR | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSQ1 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSRQ1 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSR | COLOR SIGNAL DECODER, PQFP32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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: |
| TVP5151 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Ultralow-Power NTSC/PAL/SECAM Video Decoder |
| TVP5151EVM | 功能描述:视频 IC 开发工具 TVP5151 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Boards 类型:YPbPr to RGBHV Converters 工具用于评估:LMH1251 工作电源电压:5 V |
| TVP5151IPBS | 功能描述:视频 IC UltraLo-Pwr NTSC/ 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 |
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