Multimedia Audio Codec For Ac97

SigmaTels STAC9704T STAC9707T is a general purpose 18-bit, full duplex, Audio CODEC that conforms to the Analog component specification of AC97 (Audio Codec 97 Component Specification rev. 1.03). The STAC9704T STAC9707T incorporates SigmaTels proprietary Sigma-Delta technology to achieve signal quality in excess of 95dB SNR. The DACs ADCs and mixers are integrated with Analog I/Os, which include four Analog line-level stereo inputs, two Analog line-level mono inputs, and 3 output channels. Also included are SigmaTels 3D stereo enhancement (SS3D) and an extra true line-level out for Headphones or speaker Amplifiers The STAC9704 STAC9707 communicates via the five wire AC Link to any digital component of AC97 providing flexibility in the Audio system design. Packaged in a small AC97 compliant 48-pin TQFP, the STAC9704 STAC9707 CAN be placed on the motherboard, daughter boards, add-on cards, PCMCIA cards, or outside the main chassis such as in a speaker. The 9707 is identical to the 9704 except that the 9707 is tested at AVdd = DVdd = 3.3V. By Hynix Semiconductor