CR_RPBM
auich_reg_write_8(&stream->card->config, stream->base + AUICH_REG_X_CR, CR_RPBM | CR_LVBIE | CR_FEIE | CR_IOCE);
auich_reg_read_8(&stream->card->config, stream->base + AUICH_REG_X_CR) & ~CR_RPBM);