DS3106 datasheet(1/87 Pages) MAXIM

Part #	DS3106

Description	Line Card Timing IC

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Manufacturer	MAXIM [Maxim Integrated Products]

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DS3106

Line Card Timing IC

General Description

The DS3106 is a low-cost timing IC for telecom line

cards. The device accepts two reference clocks from

dual redundant system timing cards, continually

monitors both inputs, and performs manual reference

switching if the primary reference fails. The highly

programmable DS3106 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.

The DS3106 register set is backward compatible with

Semtech’s ACS8526 line card timing IC. The DS3106

pinout is similar but not identical to the ACS8526.

Applications

SONET/SDH, Synchronous Ethernet, PDH, and

Other Line Cards in WAN Equipment Including

MSPPs, Ethernet Switches, Routers, DSLAMs,

and Wireless Base Stations

Simplified Functional Diagram

Features

 Advanced DPLL Technology

 Programmable PLL Bandwidth: 18Hz to 400Hz

 Manual Reference Switching

 Holdover on Loss of All Input References

 Frequency Conversion Among SONET/SDH,

PDH, Ethernet, Wireless, and CMTS Rates

 Two Input Clocks

 CMOS/TTL Signal Format (≤ 125MHz)

 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

Custom Clock Rates: Any Multiple of 2kHz Up

to 125MHz

 Two Output Clocks

 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

Frame Sync: 2kHz, 8kHz

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

 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

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

DS3106LN

-40

C to +85C

64 LQFP

DS3106LN+

-40

C to +85C

64 LQFP

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

19-4629; Rev 3; 5/09

SPI is a trademark of Motorola, Inc.

OC3

LOCAL

OSCILLATOR

CONTROL STATUS

DS3106

IC4

IC3

FSYNC

MFSYNC

OC6 LVDS/LVPECL

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