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S/PDIF - Wikipedia
Understanding SPDIF In And Out: Digital Audio Made Easy
S/PDIF - HwB - Hardware Book
What Is S/PDIF? A Basic Definition - Tom's Hardware
S/PDIF Digital Audio on a Microcontroller – scanlime
SPDIF - Tech-FAQ
48.6.1.1 SPDIF Protocol - Microchip Technology
The S/PDIF Port – Explained - Music Production Nerds