Microchip Technology SY87739LHY

Description
The SY87739L is a protocol transparent fractionalN synthesizer integrated circuit.
It generates a differential PECL output frequency from 10MHz up to 729MHz from a single 27MHz reference oscillator.
The SY87739L generates an exactly correct reference frequency for common data transport protocols.
It is especially important in transponder applications, where a standards compliant protocol data unit must be generated downstream, even in the absence of any signal from the associated upstream interface.
The SY87739L accepts configuration via a MicroWireTM interface.

Features
Protocol transparent fractionalN synthesizer from 10MHz to 729MHz from a single 27MHz reference oscillator
Generates exactly the correct frequency for common transport protocols with or without FEC
Directly enables SY87721L CDR to lock onto any data rate within its range
Exceeds BellCore and ITU jitter generation specifications
Programmable via MicroWireTM interface
Available in 32Pin ePadTQFP package

Applications
Metro access system
Transponders
Multiplexers: access, Add Drop Mux
SONET/SDH/ATMbased transmission systems, modules, and test equipment
Broadband crossconnects
Fiber optic test equipment
Protocols supported: OC1, OC3, OC12, OC48, ATM, Gigabit Ethernet, Fast Ethernet, Fibre Channel and 2X Fibre Channel, 1394, InfiniBand, and Proprietary Optical Transport