Datasheet > PI6C2972FC

PI6C2972FC

更新时间： 2024-11-08 22:44:27

品牌	Logo	应用领域
百利通 - PERICOM		时钟驱动器
页数	文件大小	规格书
7页	185K
描述
Low Voltage PLL Clock Driver

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中文翻译

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PI6C2972FC 数据手册

PI6C2972

Low Voltage PLL Clock Driver

Description

Features

ThePI6C2972are3.3Vcompatible,PLLbasedclockdriverdevices

targeted for high-performance CISC or RISC processor based sys-

tems.Withoutputfrequenciesofupto125MHzandskewsof550ps

thePI6C2972areideallysuitedformostsynchronoussystems. The

devices offer twelve low skew outputs plus a feedback and sync

output for added flexibility and ease of system implementation.

• FullyIntegratedPLL

• Output Frequency up to 125 MHz

• Compatible with PowerPC and Pentium Microprocessors

• 3.3VV

• + 100ps Typical Cycle–to–Cycle Jitter

ThePI6C2972featuresanextensiveleveloffrequencyprogramma-

bility between the 12 outputs as well as the input vs output

relationships. Using the select lines output frequency ratios of 1:1,

2:1,3:1,3:2,4:1,4:3,5:1,5:2,5:3,6:1and6:5betweenoutputscanbe

realizedbypulsinglowoneclockedgepriortothecoincidentedges

of the Qa and Qc outputs. The Sync output will indicate when the

coincident rising edges of the above relationships will occur. The

Power–On Reset ensures proper programming if the frequency

select pins are set at power up. If the fselFB2 pin is held high, it may

be necessary to apply a reset after power–up to ensure synchroni-

zation between the QFB output and the other outputs. The internal

power–on reset is designed to provide this function, but with

power–up conditions being dependent, it is difficult to guarantee.

All other conditions of the fsel pins will automatically synchronize

duringPLLlockacquisition.

The PI6C2972 offers a very flexible output enable/disable scheme.

NotethatallofthecontrolinputsonthePI6C2972haveinternalpull–

up resistors.

ThePI6C2972isfully3.3Vcompatibleandrequiresnoexternalloop

filtercomponents.AllinputsacceptLVCMOS/LVTTLcompatible

levelswhiletheoutputsprovideLVCMOSlevelswiththecapability

todrive50-ohmtransmissionlines. Forseriesterminatedlineseach

PI6C2972 output can drive two 50-ohm lines in parallel thus effec-

tively doubling the fanout of the device.

• Packaging(Pb-free&Greenavailable):

-52-pinLQFP(FC)

PinConfiguration

39 38 37 36 35 34 33 32 31 30 29 28 27

fselFB1

QSync

GNDO

Qc0

fselb1

fselb0

fsela1

fsela0

Qa3

VCCO

Qc1

VCCO

Qa2

fselc0

fselc1

Qc2

GNDO

Qa1

VCCO

Qc3

VCCO

Qa0

GND0

Inv_Clk

GND0

VCO_Sel

9 10 11 12 13

PS8590C

09/22/04

12 3 4 5 6 7

中文翻译

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与PI6C2972FC相关器件

型号	品牌	获取价格	描述	数据表
PI6C2972FCE	PERICOM	获取价格	Low Voltage PLL Clock Driver
PI6C2973	ETC	获取价格	Clock IC \| 3.3V. 125MHz. Selectable LVTTL/LVCMOS & LVPECL Inputs. Zero Delay Clock Driver
PI6C2973-2FC	PERICOM	获取价格	PLL Based Clock Driver, 6C Series, 12 True Output(s), 0 Inverted Output(s), CMOS, PQFP52,
PI6C2973FCE	PERICOM	获取价格	PLL Based Clock Driver, 6C Series, 12 True Output(s), 0 Inverted Output(s), PQFP52, LQFP-5
PI6C3420A	PERICOM	获取价格	27 MHz Spread Spectrum Clock Synthesizer
PI6C3420ATE	PERICOM	获取价格	27 MHz Spread Spectrum Clock Synthesizer
PI6C3421-1TEX	PERICOM	获取价格	Clock Generator, PDSO6,
PI6C3421A	PERICOM	获取价格	27MHz Spread Spectrum Clock Synthesizer
PI6C3421AITE	PERICOM	获取价格	Video Clock Generator, 27MHz, CMOS, PDSO6, GREEN, PLASTIC, SC-74A, SOT-23, 6 PIN
PI6C3421AITEX	PERICOM	获取价格	Video Clock Generator, 27MHz, CMOS, PDSO6, GREEN, PLASTIC, SC-74A, SOT-23, 6 PIN

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