Datasheet > DS3105_09

DS3105_09

更新时间： 2024-11-25 06:54:39

品牌	Logo	应用领域
美信 - MAXIM		时钟
页数	文件大小	规格书
120页	591K
描述
Line Card Timing IC

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DS3105_09 数据手册

19-4628; Rev 3; 5/09

DS3105

Line Card Timing IC

Features

General Description



Advanced DPLL Technology

The DS3105 is a low-cost, feature-rich timing IC for

telecom line cards. Typically, the device accepts two

reference clocks from dual redundant system timing

cards. The DS3105 continually monitors both inputs

and performs automatic hitless reference switching if

the primary reference fails. The highly programmable

DS3105 supports numerous input and output

frequencies including frequencies required for

SONET/SDH, Synchronous Ethernet (1G, 10G, and

100Mbps), wireless base stations, and CMTS

systems. PLL bandwidths from 18Hz to 400Hz are

supported, and a wide variety of PLL characteristics

and device features can be configured to meet the

needs of many different applications.



Programmable PLL Bandwidth: 18Hz to 400Hz

Hitless Reference Switching, Automatic or Manual

Holdover on Loss of All Input References

Frequency Conversion Among SONET/SDH,

PDH, Ethernet, Wireless, and CMTS Rates

Five Input Clocks



Two CMOS/TTL Inputs (≤ 125MHz)

Two LVDS/LVPECL/CMOS/TTL (≤ 156.25MHz)

Backup Input (CMOS/TLL) in Case of Complete

Loss of System Timing References

Three Optional Frame-Sync Inputs (CMOS/TTL)

Continuous Input Clock Quality Monitoring

Numerous Input Clock Frequencies Supported

Ethernet xMII: 2.5, 25, 125, 156.25MHz

SONET/SDH: 6.48, N x 19.44, N x 51.84MHz

PDH: N x DS1, N x E1, N x DS2, DS3, E3

Frame Sync: 2kHz, 4kHz, 8kHz



The DS3105 register set is backward compatible with

Semtech’s ACS8525 line card timing IC. The DS3105

pinout is similar but not identical to the ACS8525.

Custom Clock Rates: Any Multiple of 2kHz Up to

131.072MHz, Any Multiple of 8kHz Up to

155.52MHz

Applications



Two Output Clocks

SONET/SDH, Synchronous Ethernet, PDH, and

Other Line Cards in WAN Equipment Including

MSPPs, Ethernet Switches, Routers, DSLAMs,

and Wireless Base Stations



One CMOS/TTL Output (≤ 125MHz)

One LVDS/LVPECL Output (≤ 312.50MHz)

Two Optional Frame-Sync Outputs: 2kHz, 8kHz

Numerous Output Clock Frequencies Supported

Ethernet xMII: 2.5, 25, 125, 156.25, 312.5MHz

SONET/SDH: 6.48, N x 19.44, N x 51.84MHz

PDH: N x DS1, N x E1, N x DS2, DS3, E3

Other: 10, 10.24, 13, 30.72MHz

Ordering Information

PART

DS3105LN

DS3105LN+

TEMP RANGE

-40C to +85C

PIN-PACKAGE

64 LQFP

Frame Sync: 2kHz, 8kHz

64 LQFP

Custom Clock Rates: Any Multiple of 2kHz Up to

77.76MHz, Any Multiple of 8kHz Up to

311.04MHz, Any Multiple of 10kHz Up to

388.79MHz

+Denotes a lead(Pb)-free/RoHS-compliant package.



General



Suitable Line Card IC for Stratum 3/3E/4, SMC,

SEC



Internal Compensation for Master Clock Oscillator

SPI™ Processor Interface

1.8V Operation with 3.3V I/O (5V Tolerant)

Industrial Operating Temperature Range

SPI is a trademark of Motorola, Inc.

Maxim Integrated Products

Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of

any device may be simultaneously available through various sales channels. For information about device errata, go to:

www.maxim-ic.com/errata. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or

visit Maxim’s website at www.maxim-ic.com.

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