Thunderbolt 3 Dock: S/PDIF Audio

Created on: July 10, 2017

Relevant Part Numbers:



Please note that S/PDIF is output-only. The S/PDIF connection in the Thunderbolt 3 Dock is driven by a CMedia CM6533N chipset.

This chipset provides the following capabilities over S/PDIF: 

  • Two (2)-channel DAC for audio output 
    • mono and stereo source playback supported
    • a limited number of DTS playback environments may allow for 5.1 output, however this is not an officially supported feature.
  • Sample Rates: 44.1K/48K/88.2K/96KHz
  • Bit Length: 16/24 bits