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CY2546IXXXT

更新时间： 2024-11-18 03:06:07
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 时钟发生器
页数 文件大小 规格书
11页 317K
描述
Quad PLL Programmable Clock Generator with Spread Spectrum

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中文翻译

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CY2546IXXXT 数据手册

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CY2544  
CY2546  
PRELIMINARY  
Quad PLL Programmable Clock Generator with  
Spread Spectrum  
Features  
Benefits  
• Multiple high-performance PLLs allow synthesis of  
unrelated frequencies  
• Four fully integrated phase-locked loops (PLLs)  
• Input Frequency range:  
• Nonvolatile programming for customized PLL frequencies,  
spreadspectrumcharacteristics, drivestrength,crystalload  
capacitance, and output frequencies  
— External crystal: 8 to 48 MHz  
— External reference: 8 to 166 MHz clock  
• Wide operating output frequency range  
— 3 to 166 MHz  
• TwoSpreadSpectrumcapablePLLswithLinearorLexmark  
profile for maximum EMI reduction  
• Spread Spectrum PLLs can be disabled or enabled  
separately  
• Programmable Spread Spectrum with Center and Down  
Spread option and Lexmark modulation profile  
• PLLs can be programmed for system frequency margin  
tests  
• Two VDD core voltage options:  
— 2.5V, 3.0V, and 3.3V for CY2544  
— 1.8V for CY2546  
• Meets critical timing requirements in complex system  
designs  
• Suitable for PC, consumer, and networking applications  
• Ability to synthesize standard frequencies with ease  
• Selectable output voltages:  
— 2.5V, 3.0V, and 3.3V for CY2544  
— 1.8V for CY2546  
• Application compatibility in standard and low-power  
systems  
• FrequencySelectfeaturewithoptiontoselecteightdifferent  
frequencies  
• Low jitter, high accuracy outputs  
• Up to nine clock outputs  
• Programmable output drive strength  
• Glitch-free outputs while frequency switching  
• 24-pin QFN package  
• Commercial and Industrial temperature ranges  
Block Diagram  
EXCLKIN  
4 of 6  
Crossbar  
Switch  
CLK1  
CLK2  
CLK3  
CLK4  
CLK5  
CLK6  
CLK7  
CLK8  
CLK9  
Bank  
1
XIN  
Output  
OSC  
PLL1  
XOUT  
Dividers  
and  
Bank  
2
Drive  
FS0  
FS1  
FS2  
PLL2  
Strength  
MUX  
and  
Control  
Logic  
Control  
Bank  
3
PLL3  
(SS)  
PLL4  
(SS)  
PD#/OE  
SSON  
Cypress Semiconductor Corporation  
Document #: 001-12563 Rev. *A  
•
198 Champion Court  
•
San Jose, CA 95134-1709  
•
408-943-2600  
Revised February 28, 2007  
[+] Feedback  
1234567...11

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