Antex Electronics StudioCard AV Pro, StudioCard 2000, & SC-22 - Manual (Page 115)

C h a p t e r 6 D i g i t a l A u d i o
6-6 Antex StudioCard Copyright © 1997
Digital Audio Digital audio enters the StudioCard through a transformer-
coupled digital input, which can be switched to conform to
either AES/EBU of S/PDIF electrical standards. The signal
then enters a receiver circuit that extracts digital audio data
and a word clock. The two channels of digital audio data are
sent to a multiplexer that can selectively route digital audio
data to the DSP instead of data from audio input channels 1
and 2. The extracted word clock is routed to the sample clock
source multiplexer where it can be selected as a reference for
the sample clock generator.
Outgoing digital audio data is identical to the data sent to the
D/A converters for analog output channels 1 and 2. A digital
audio transmitter formats the data, then level and impedance
are adjusted for either AES/EBU or S/PDIF and then sent out
as transformer-coupled digital audio output.