I have an Ultramatch from Behringer. According to the status LEDs of this device the HIFIBerry Digi sends orig and protection bits (markers) together in the data stream.
See page 5 here http://www.behringer.com/assets/SRC2496_M_EN.pdf
and here http://en.wikipedia.org/?title=S/PDIF#Channel_status_bit
orig bit means it is allowed to copy once. protection no copy allowed.
As to my analysis it is contradictory that both bits are set the same time in stream output of the Digi.
Either it's allowed to copy or not.
To my knowledge Wolfson WM8804 has registers to programm to set these bits(markers) or not.
http://www.wolfsonmicro.com/media/76500/WM8804.pdf
I am not an expert, but I think this goes by GPIO pins.
Do you agree to my analysis ? Is it possible that you correct the design of Digi to have only one of these bits set, but not both together ? Please check this for all yr products.
Best regards
AW
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HiFiBerry team Dear Andreas,
setting the L-bit (probably what your Behringer shows as "orig") and the protection bit means "this is an original, you can copy it once". Therefore it is allowed and meaningful to have both bits set. Check out the Wikipedia article that you linked (section channel status bits).
However, these status bits do not make much sense for a general purpose digital output as the driver has no knowledge about the source and the copyright of the material played back. The setting that we're using is the standard setting defined by Wolfson and we don't want to change this. These bits were meaningful in times of CD and MD recorders, however today there just a relict from the past.
Best regards
Daniel
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