DS3106LN+【PDF 1/92 页】IC TIMING LINE CARD 64-LQFP

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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.

OC3

LOCAL

OSCILLATOR

CONTROL STATUS

DS3106

IC4

IC3

FSYNC

MFSYNC

OC6 LVDS/LVPECL

Data Sheet

April 2012

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