Datasheet > ICS650-01

ICS650-01

更新时间： 2022-12-01 12:20:15

品牌	Logo	应用领域
矽成 - ICSI		时钟
页数	文件大小	规格书
4页	46K
描述
System Peripheral Clock Source

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ICS650-01 数据手册

ICS650-01

System Peripheral Clock Source

Description

Features

The ICS650-01 is a low cost, low jitter, high

performance clock synthesizer for system

• Packaged in 20 pin tiny SSOP (QSOP)

• Operating VDD of 3.3V or 5V

• Less than one ppm synthesis error in all clocks

• Inexpensive 14.31818 MHz crystal or clock input

• Provides Ethernet and Fast Ethernet clocks

• Provides SCSI clocks

peripheral applications. Using analog/digital

Phase-Locked Loop (PLL) techniques, the device

accepts a parallel resonant 14.31818 MHz crystal

input to produce up to eight output clocks. The

device provides clocks for PCI, SCSI, Fast

Ethernet, Ethernet, USB, and AC97. The user can

select one of three USB frequencies, and also one

of three AC97 audio frequencies. The OE pin puts

all outputs into a high impedance state for board

level testing. All frequencies are generated with less

than one ppm error, meeting the demands of SCSI

and Ethernet clocking.

• Provides PCI clocks

• Selectable AC97 audio clock

• Selectable USB clock

• OE pin tri-states the outputs for testing

• Selectable frequencies on three clocks

• Duty cycle of 40/60

The ICS650 can be mask customized to produce

any frequencies from 1 to 150 MHz.

• Advanced, low power CMOS process

Block Diagram

Processor Clocks

(Fast Ethernet,

SCSI, PCI )

Output

Buffer

PSEL1:0

Output

Buffer

ASEL

USEL

Audio Clock

Clock

Synthesis

Circuitry

Output

Buffers

USB Clock

14.31818 MHz

crystal

X1/ICLK

Output

Buffers

20 MHz

Crystal

Oscillator

or clock

Output

Buffer

14.31818 MHz

Output Enable (all outputs)

MDS 650-01 C

Revision 092799

Printed 11/15/00

Integrated Circuit Systems • 525 Race Street • San Jose •CA•95126• (408) 295-9800tel • (408) 295-9818fax

12 3 4

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