AC’97 2.2 compliant codec VIA Technologies’ VT1616TM 20-bit ¦∆ audio codec conforms to the AC’97 2.2 and S/PDIF 20-bit, stereo ADC and 6-channel stereo DACs Output specifications. The VT1616 integrates 1 Hz resolution VSR on all channels Sample Rate Converters on all channels and can be Integrated .