As an example for the design of programmable intellectual property modules (PIP), a STM-1/STS3 input block was designed. STM-1 and STS3 are the 155 MHz/s hierarchies in the Synchronous Digital Hierarchy (SDH) and Synchronous Optical NETwork (SONET) standard, respectively. The goal was to design a highly parametrizable soft module that offers maximum flexibility for system integration and customerspecific features. Additionally, the module is usable in both SDH and SONET networks, without any changes to the hardware. By downloading appropriate software, its application for SDH or SONET can be selected after system integration.
Other major benefits of PIP modules that were proven by this implementation are: