This EE-Note provides a basic description of the Sony Philips Digital Interface (S/PDIF), its frame structure, and how to program S/PDIF on SHARC® ADSP-2136x and ADSP-21371 processors to transmit and receive data. This EE-Note also explains the Precision Clock Generator (PCG) setup required to provide necessary signals for an S/PDIF transmit section. Code examples are provided with this EE-Note.