参数资料
型号: TVP5154APNPR
厂商: Texas Instruments
文件页数: 16/93页
文件大小: 0K
描述: IC VIDEO DECODER 4CH 128-HTQFP
产品培训模块: Data Converter Basics
标准包装: 1
类型: 视频解码器
应用: 安全系统
电压 - 电源,模拟: 1.8V
电压 - 电源,数字: 1.8V,3.3V
安装类型: 表面贴装
封装/外壳: 128-TQFP 裸露焊盘
供应商设备封装: 128-HTQFP(14x14)
包装: 标准包装
产品目录页面: 887 (CN2011-ZH PDF)
配用: TVP5154EVM-ND - TVP5154EVM
296-23058-ND - EVAL MODULE FOR DM642
其它名称: 296-23027-6
F
dto +
F
ctrl
223
F
clk
www.ti.com
SLES214C – DECEMBER 2007 – REVISED SEPTEMBER 2010
6
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 the GLCO terminal. The frequency control word is a 23-bit
binary number. The frequency of the DTO can be calculated from the following equation:
(1)
where Fdto is the frequency of the DTO, Fctrl is the 23–bit DTO frequency control, and Fclk is the frequency
of the CLK.
6.1
TVP5154A 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 seven CLKs
after the transmission of the last bit of DCO frequency control. Upon the transmission of the reset bit, the
phase of the TVP5154A 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.
6.2
RTC Mode
Figure 6-1 shows the timing diagram of the RTC mode. Clock rate for the RTC mode is four times slower
than the GLCO clock rate. For PLL frequency control, the upper 22 bits are used. Each frequency control
bit is two clock cycles long. The active-low reset bit occurs six CLKs after the transmission of the last bit of
PLL frequency control.
Copyright 2007–2010, Texas Instruments Incorporated
Genlock Control and RTC
23
Product Folder Link(s): TVP5154A
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相关代理商/技术参数
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TVP5154EVM 功能描述:视频 IC 开发工具 TVP5154 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
TVP5154PNP 功能描述:视频 IC 4Ch Lo Pwr PAL/NTSC/ SECAM 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
TVP5154PNP 制造商:Texas Instruments 功能描述:4-Channel Video Decoder
TVP5154PNPG4 制造商:TI 制造商全称:Texas Instruments 功能描述:4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK
TVP5154PNPR 功能描述:视频 IC 4Ch Lo Pwr PAL/NTSC SECAM 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