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參數(shù)資料
| 型號： | GS4915 |
| 廠商： | Gennum Corporation |
| 英文描述： | CONN,S/R,8 POS,254C-08-1, CLOSED END STRAIN RELIEF COVER |
| 中文描述： | ClockCleaner⑩ |
| 文件頁數(shù)： | 12/26頁 |
| 文件大?。?/td> | 533K |
| 代理商： | GS4915 |
GS4915 Data Sheet
39145 - 3
November 2007
12 of 26
3. Detailed Description
3.1 Functional Overview
The GS4915 provides a low jitter clock output when fed with an HD or SD video
clock input. Other input clock frequencies between 12MHz and 165MHz can be
automatically passed through to the GS4915 outputs.
An internal 2:1 mux allows the user to select between a differential (CML/LVDS
compatible) or single-ended (LVCMOS) input clock. Both a single-ended
LVCMOS-compatible and an LVDS-compatible differential output are provided.
The GS4915 may operate in either auto or fixed frequency mode. In auto mode,
the device will automatically clean the selected input clock if its frequency is found
to be one of the supported SD or HD clock rates. In fixed mode, the user selects
only one of these frequencies to be cleaned.
In addition, the device allows the user to select between auto or manual bypass
operation. In autobypass mode, the GS4915 will automatically bypass its cleaning
stage and pass the input clock signal directly to the output whenever the device is
unlocked which includes the case where the input frequency is something other
than the five frequencies supported. In manual bypass mode, the input signal
passes through directly to the output.
The GS4915 can optionally double the output frequency for 74.25MHz or
74.175MHz HD clocks in order to provide optimal jitter performance of some
serializers.
The GS4915 also provides the user with a 2-state skew control. The output clocks
produced by the device may be advanced by of an output CLK period in order
to accommodate downstream setup and hold requirements.
The GS4915 is designed to operate with the GO1555 VCO.
The GS4915 Clock Cleaner complements Gennum's GS4911B Clock and Timing
Generator for implementing a video genlock solution. Whereas the GS4911B itself
cleans low-frequency jitter, the GS4915 is designed to clean primarily the higher
frequency jitter of clocks generated by the GS4911B.
3.2 Clock Inputs
The GS4915 contains two separate input buffers to accept either a differential or
single-ended input clock. The applied clock(s) can be any video clock needing
cleaning, although typically it will be the video clock specifically used for
serialization.
The frequency of the applied clock signal(s) must be between 12MHz and 165MHz.
The clock input buffers use a separate power supply of +1.8V DC supplied via the
IN_VDD pin.
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| GS6333UR19D1 | FC/ACP F.O. SINGLE MODE IN-LINE ATTENUATOR 10DB |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GS4915_09 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:ClockCleaner |
| GS4915-CNE3 | 制造商:Semtech Corporation 功能描述:QFN-40 pin (490/tray) |
| GS4915INE3 | 制造商:Gennum Corporation 功能描述:CLOCKCLEANER HD/SD VIDEO INPUT 40QFN 制造商:Gennum Corporation 功能描述:CLOCKCLEANER, HD/SD, VIDEO INPUT, 40QFN |
| GS4915-INE3 | 功能描述:IC CLK JITTER CLEANR 40QFN RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:ClockCleaner™ 標準包裝:1,000 系列:Precision Edge® 類型:時鐘/頻率合成器 PLL:無 輸入:CML，PECL 輸出:CML 電路數(shù):1 比率 - 輸入:輸出:2:1 差分 - 輸入:輸出:是/是 頻率 - 最大:10.7GHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤，16-MLF? 供應(yīng)商設(shè)備封裝:16-MLF?（3x3） 包裝:帶卷 (TR) 其它名稱:SY58052UMGTRSY58052UMGTR-ND |
| GS4953 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:臺灣晶群科技 |
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