S/PDIF output extension for Portable MiniDisc Devices

Here is an digital audio project that uses S/PDIF.

“Here’s a very trivial S/PDIF transmitter hack for portable MiniDiscs and other digital audio devices lacking S/PDIF output.

The s/pdif transmitter runs from +5V, 44kHz 16bit input at 384xfs, is set to consumer mode output, and doesn’t transmit any COPY bit (copyright protection disabled). The board can be connected directly to a PC motherboard, or via a Toshiba TOTX173 to an optical cable feed, or with a small transformer to a coax line.”

4 Comments


  1. Doesn’t look trivial to me.


  2. damn useful. lack of digi-out on portables was a @#*&% blunder from hell.


  3. Hey Sebastian,

    Never thought about the DMCA, but would it fall into that since the circuit would not be decoding anything…

    Although I guess everything from it could be digitally duplicated without the copy protection, so I guess this could be an issue. 🙁

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