參數(shù)資料
型號(hào)： TVP5147M1IPFPRQ1
廠(chǎng)商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 顏色信號(hào)轉(zhuǎn)換
英文描述： COLOR SIGNAL DECODER, PQFP80
封裝： PLASTIC, HTQFP-80
文件頁(yè)數(shù)： 25/108頁(yè)
文件大?。?/td> 937K
代理商： TVP5147M1IPFPRQ1
TVP5147M1
74
XTAL1
14.318-MHz
Crystal
75
XTAL2
TVP5147M1
74
XTAL1
75
XTAL2
CL1
CL2
14.318-MHz
Clock
www.ti.com
SLES140F – JULY 2005 – REVISED DECEMBER 2010
2.3
Clock Circuits
An internal line-locked PLL generates the system and pixel clocks. A 14.318-MHz clock is required to
drive the PLL. This can be input to the TVP5147M1 decoder at the 1.8-V level on terminal 74 (XTAL1), or
a crystal of 14.318-MHz fundamental resonant frequency can be connected across terminals 74 and 75
(XTAL2). If a parallel resonant circuit is used as shown in Figure 2-10, then the external capacitors must
have the following relationship:
CL1 = CL2 = 2CL CSTRAY
(1)
Where,
CSTRAY is the terminal capacitance with respect to ground
CL is the crystal load capacitance specified by the crystal manufacturer
Figure 2-10 shows the reference clock configurations. The TVP5147M1 decoder generates the DATACLK
signal used for clocking data.
Figure 2-10. Reference Clock Configurations
2.4
Real-Time Control (RTC)
Although the TVP5147M1 decoder is a line-locked system, the color burst information is used to
determine accurately the color subcarrier frequency and phase. This ensures proper operation with
nonstandard video signals that do not follow exactly the required frequency multiple between color
subcarrier frequency and video line frequency. The frequency control word of the internal color subcarrier
PLL and the subcarrier reset bit are transmitted via terminal 37 (GLCO) for optional use in an end system
(for example, by a video encoder). The frequency control word is a 23-bit binary number. The
instantaneous frequency of the color subcarrier can be calculated using the following equation:
FPLL = (Fctrl / 2
23) × F
sclk
(2)
Where,
FPLL is the frequency of the subcarrier PLL
Fctrl is the 23-bit PLL frequency control word
Fsclk is two times the pixel frequency
This information can be generated on the GLCO terminal. Figure 2-11 shows the detailed timing diagram.
Copyright 2005–2010, Texas Instruments Incorporated
Functional Description
23
Product Folder Link(s): TVP5147M1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TVP5147M1PFP 功能描述:視頻 IC 10B High Qual S-Chip Dig Vid Decoder RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
TVP5147M1PFP 制造商:Texas Instruments 功能描述:; Resolution (Bits):10; Supply Current:5
TVP5147M1PFP_07 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:NTSC/PAL/SECAM 2 X 10-Bit Digital Video Decoder With Macrovision Detection, YPbPr Inputs, and 5-Line Comb Filter
TVP5147M1PFPG4 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:NTSC/PAL/SECAM 2 X 10-Bit Digital Video Decoder With Macrovision Detection, YPbPr Inputs, and 5-Line Comb Filter
TVP5147M1PFPR 功能描述:視頻 IC 10B Hi Qual Sgl-Chip Dig Vid Dec RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
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