CY2547

更新时间： 2024-11-18 06:51:35

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
15页	334K
描述
Quad PLL Programmable Spread Spectrum Clock Generator with Serial I2C Interface

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中文翻译

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CY2547 数据手册

CY2545

CY2547

Quad PLL Programmable Spread Spectrum

Clock Generator with Serial I C Interface

■ Glitch-free outputs while frequency switching

■ 24-pin QFN package

Features

■ Four fully integrated phase locked loops (PLLs)

■ Commercial and industrial temperature ranges

■ Input frequency range

❐ External crystal: 8 to 48 MHz

❐ External reference: 8 to 166 MHz clock

Benefits

■ Multiple high performance PLLs allow synthesis of unrelated

frequencies

■ Wide operating output frequency range

❐ 3 to 166 MHz

■ Nonvolatile programming for personalization of PLL

frequencies,spreadspectrumcharacteristics,drivestrength,

■ Serial programmable over 2-wire I²C interface

crystal load capacitance, and output frequencies

■ Programmable spread spectrum with center and down

spread option and Lexmark and Linear modulation profiles

■ Application specific programmable EMI reduction using

Spread Spectrum for clocks

■ V_DDsupply voltage options:

❐ 2.5V, 3.0V, and 3.3V for CY2545

❐ 1.8V for CY2547

■ Programmable PLLs for system frequency margin tests

■ Meets critical timing requirements in complex system

designs

■ Selectable output clock voltages independent of V_DDsupply:

❐ 2.5V, 3.0V, and 3.3V for CY2545

❐ 1.8V for CY2547

■ Suitability for PC, consumer, portable, and networking appli-

cations

■ Power down, output enable, or frequency select features

■ Low jitter, high accuracy outputs

■ Capable of Zero PPM frequency synthesis error

■ Uninterrupted system operation during clock frequency

switch

■ Ability to synthesize nonstandard frequencies with

Fractional-N capability

■ Application compatibility in standard and low power systems

■ Up to eight clock outputs with programmable drive strength

Logic Block Diagram

CLKIN/RST

Crossbar

Switch

CLK1

XIN/

EXCLKIN

Bank

CLK2

Output

OSC

PLL1

XOUT

Dividers

and

CLK3

CLK4

CLK5

CLK6

CLK7

CLK8

Bank

Drive

PLL2

Strength

Control

MUX

and

Control

Logic

Bank

PLL3

(SS)

SCL

SDA

PLL4

(SS)

I2C

PD#/OE

SSON

Cypress Semiconductor Corporation

Document #: 001-13196 Rev. *A

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised October 05, 2007

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中文翻译

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与CY2547相关器件

型号	品牌	获取价格	描述	数据表
CY2547CXXX	CYPRESS	获取价格	Quad PLL Programmable Spread Spectrum Clock Generator with Serial I2C Interface
CY2547CXXXT	CYPRESS	获取价格	Quad PLL Programmable Spread Spectrum Clock Generator with Serial I2C Interface
CY2547IXXX	CYPRESS	获取价格	Quad PLL Programmable Spread Spectrum Clock Generator with Serial I2C Interface
CY2547IXXXT	CYPRESS	获取价格	Quad PLL Programmable Spread Spectrum Clock Generator with Serial I2C Interface
CY2547QCXXX	CYPRESS	获取价格	Processor Specific Clock Generator, 166MHz, CMOS, QFN-24
CY2547QI	INFINEON	获取价格	8-Output Low-Voltage Programmable Spread Spectrum Clock Generator
CY2547QIT	INFINEON	获取价格	8-Output Low-Voltage Programmable Spread Spectrum Clock Generator
CY2547QIXXX	CYPRESS	获取价格	Processor Specific Clock Generator, 166MHz, CMOS, QFN-24
CY25482	CYPRESS	获取价格	Two PLL Programmable Clock Generator with Spread Spectrum
CY25482FSXC	CYPRESS	获取价格	Clock Generator, 166MHz, CMOS, PDSO8, SOIC-8

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