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DS3105

Maxim Integrated Products
Part Number DS3105
Manufacturer Maxim Integrated Products
Description Line Card Timing IC
Published Sep 21, 2007
Detailed Description www.DataSheet4U.com Preliminary. Subject to Change Without Notice. PRELIMINARY DATASHEET DS3105 Line Card Timing IC ww...
Datasheet PDF File DS3105 PDF File

DS3105
DS3105

Overview
www.
DataSheet4U.
com Preliminary.
Subject to Change Without Notice.
PRELIMINARY DATASHEET DS3105 Line Card Timing IC www.
maxim-ic.
com GENERAL DESCRIPTION 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 100Mb/s), wireless basestations and CMTS systems.
PLL bandwidths from 18 Hz to 400 Hz are supported, and a wide variety of PLL characteristics and device features can be configured to meet the needs of many different applications.
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.
FEATURES Advanced DPLL Technology Programmable PLL bandwidth: 18 Hz to 400 Hz Hitless Reference Switching, Automatic or Manual Holdover on Loss of All Input References Frequency Conversion Among SONET/SDH, PDH, Ethernet, Wireless and CMTS Rates 5 Input Clocks Two CMOS/TTL (≤125 MHz) Two LVDS/LVPECL/CMOS/TTL (≤156.
25 MHz) 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 - SONET/SDH: 6.
48, N x 19.
44, N x 51.
84 MHz - Ethernet xMII: 2.
5, 25, 125, 156.
25 MHz - PDH: N x DS1, N x E1, N x DS2, DS3, E3 - Frame Sync: 2 kHz, 4 kHz, 8 kHz - Custom: Any Multiple of 2 kHz up to 131.
072 MHz, Any Multiple of 8 kHz up to 155.
52 MHz APPLICATIONS SONET/SDH, Synchronous Ethernet, PDH and Other Line Cards in WAN Equipment Including MSPPs, Ethernet Switches, Routers, DSLAMs, and Wireless Base Stations.
FUNCTIONAL DIAGRAM LVDS/LVPECL or CMOS/TTL IC3 IC4 IC5 I...


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