I want to input S/PDIF to a Teensy 4. The physical interface is RCA (coaxial).
Is any level shifting or other components needed, or can the RCA wire and shield be directly connected to Teensy's Pin 15 and GND, respectively?
I read somewhere that "S/PDIF devices provide signals between 0.2 VPP and 0.6 VPP into a 75 Ω load over an unbalanced circuit. The electrical adapter must amplify the received S/PDIF signal to a logic level accepted by microcontrollers" - but that document was generic, not specific for Teensy.
The Teensy 4 processor datasheet just says it implements the IEC 60958 (i.e. S/PDIF) standard but is not clear if that refers to only the logical and signal timing parts or if that includes the electric characteristics and voltage levels of the specification.
Is any level shifting or other components needed, or can the RCA wire and shield be directly connected to Teensy's Pin 15 and GND, respectively?
I read somewhere that "S/PDIF devices provide signals between 0.2 VPP and 0.6 VPP into a 75 Ω load over an unbalanced circuit. The electrical adapter must amplify the received S/PDIF signal to a logic level accepted by microcontrollers" - but that document was generic, not specific for Teensy.
The Teensy 4 processor datasheet just says it implements the IEC 60958 (i.e. S/PDIF) standard but is not clear if that refers to only the logical and signal timing parts or if that includes the electric characteristics and voltage levels of the specification.