audiopci_dac_rate
static uint16_t audiopci_dac_rate(int);
PUT16(dev, CONC_wDACRATE_OFF, audiopci_dac_rate(48000));
PUT16(dev, CONC_wDACRATE_OFF, audiopci_dac_rate(48000));
PUT16(dev, CONC_wDACRATE_OFF, audiopci_dac_rate(48000));