First approach 2001: Trying to get access to digital
sound signals through Prodif Plus soundcard. The SEKD-Prodif
Plus (Type 1999) offers both digital S/PDIF and Alesis ADAT
and the data can be accessed serially.
To sync more than one card, the Prodif-device offers
a connector which can be used to get the clock from, to synch
another card but also other digital interfaces. The S/PDIF data
is read by a simple PLD device fo Xilinx XC3000 and sent to
S/PDIF IO Part
Hardware for S/PDIF (external
Second approach in 2003: Use a standard digital input
device from german manufacturer mindprint to get both S/PDIF
and AES/EBU level signals from external studio devices. It can
be synched from external sources. The data can be accessed using
the internal bus easily.
An S/PDIF interface
can be created in VHDL easily using existing sources: See OpenCores.
Read a report and this discussion about this in
The physical S/PDIF interfac is tweak in order to transmit the
10-Bit data für the synthesiszer boards and to transmit MIDI-Data.