Datasheet > P650-02XC

P650-02XC

更新时间： 2024-09-17 03:43:43

品牌	Logo	应用领域
PLL		局域网时钟
页数	文件大小	规格书
6页	228K
描述
Low EMI Network LAN Clock

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中文翻译

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数据手册

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P650-02XC 数据手册

PLL650-02

Low EMI Network LAN Clock

FEATURES

PIN CONFIGURATION

•

Full CMOS output swing with 40-mA output drive

VDD

XIN

capability. 25-mA output drive at TTL level.

Advanced, low power, sub-micron CMOS processes.

25MHz fundamental crystal or clock input.

4 outputs at 50MHz, 2 outputs selectable at 25MHz or

125MHz, 1 output selectable at 25MHz or 100MHz.

2 SDRAM selectable frequencies of 66.6, 75, 83.3,

100MHz (Double Drive Strength).

All non SDRAM outputs can be disabled (tri-state)

Spread spectrum technology selectable for EMI

reduction from ±0.5%, ±0.75% for SDRAM and 100MHz

output.

VDD

•

25MHz/100MHz

GND

XOUT/50MHz_OE*^

GND

SDRAMx2

GND

VDD

•

50MHz/FS0*^

GND

SDRAMx2

VDD

•

50MHz/FS1*^

50MHz/FS2*^T

FS3^T

VDD

25MHz/125MHz

GND

50MHz/SS0*^T11

•

Zero PPM synthesis error in all clocks.

Ideal for Network switches.

3.3V operation.

VDD

25MHz/125MHz

Note: SDRAMx2: Double Drive strength. ^T: Tri-Level input ^{^}: Internal pull-up

resistor. *: Bi-directional pin (input value is latched upon power-up).

Available in 24-Pin 150mil SSOP.

DESCRIPTIONS

FREQUENCY TABLE

The PLL 650-02 is a low cost, low jitter, and high

performance clock synthesizer. With PhaseLink’s

proprietary analog Phase Locked Loop techniques, the chip

accepts 25 MHz crystal, and produces multiple output

clocks for networking chips, PCI devices, SDRAM, and

ASICs, with double drive strength for its SDRAM outputs.

FS1

FS0

SDRAM

FS3

Pin 13, 15

FS2

Pin 22

100MHz^SST

75MHz^SST

83.3MHz^SST

Disable

125MHz

25MHz

Disable

100MHz^SST

FS(2:3): Tri-level inputs.

SST: SST modulation applied (see selection table)

66.6MHz^SST

BLOCK DIAGRAM

50MHz

(can be disabled)

XIN

XOUT

XTAL

OSC

25MHz/125MHz

(can be disabled)

Control

Logic

SDRAM (66.6, 75, 83.3, 100MHz)

FS (0:3)

25MHz/100MHz

(can be disabled)

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 09/03/04 Page 1

12 3 4 5 6

中文翻译

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