This application note describes how to interface the CY7B951SONET/SDH Serial Transceiver (SST™) with other physical-layer devices. The SST performs clock and data recoveryfrom a SONET/SDH (Synchronous Optical NETwork/SynchronousDigital Hierarchy) 51.84 Mb/s or 155.52 Mb/s interfaceand can be used in a variety of SONET and ATM applications.The application note will begin with a briefintroduction to the SST. Next, interface examples will be giventhat illustrate how to connect the SST to three different ATMcontroller devices; the first from PMC-Sierra called thePM5345 SUNI, the second, also from PMC-Sierra, called theS/UNI-LITE, and the third from Integrated Telecom Technologies(IgT) called the WAC-013.
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