iecset command examples
iecset – Set or dump IEC958 status bits
#iecset -Dhw:1
Displays the current IEC958 status bits on the second card. This is equivalent with -c 1.
#iecset -x
Displays the current IEC958 status bits in a style of the arguments for the PCM stream. The output string can be passed to the iec958 (or spdif) PCM type as the optional argument.
#iecset pro off audio off
Sets the current status to the consumer-mode and turns on the non-audio bit. The modified status will be shown, too.