S/PDIF coaxial digital audio uses a 75-ohm RCA connector (conventionally orange) to carry digital audio. Supports up to 192kHz stereo PCM and compressed surround formats. Better high-frequency response than TOSLINK.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Center Pin | S/PDIF digital signal, 0.5Vpp into 75 ohm | BUS |
| 2 | Outer Shell | Ground / shield / return | GND |
S/PDIF coaxial digital audio uses a 75-ohm RCA connector (conventionally orange) to carry digital audio. Supports up to 192kHz stereo PCM and compressed surround formats. Better high-frequency response than TOSLINK.