RME96_WCR_ADAT
rme96->wcreg &= ~RME96_WCR_ADAT;
rme96->wcreg |= RME96_WCR_ADAT;
spdif = (rme96->wcreg & RME96_WCR_ADAT) == 0;
if ((rme96->wcreg & RME96_WCR_ADAT) == 0) {