Stereo Ac 97 Codec With Multi-codec Option

SigmaTels STAC9721 STAC9723 is a general-purpose 18-bit stereo, full duplex, Audio CODEC that conforms to the Analog component specification of AC'97 (Audio Codec 97 Component Specification Rev. 2.1). The STAC9721 STAC9723 incorporates SigmaTels proprietary Sigma-Delta technology to achieve a DAC SNR in excess of 95dB. The DACs ADCs and mixer are integrated with Analog I/Os, which include four Analog line-level stereo inputs, two Analog line-level mono inputs, two stereo outputs, and one mono output channel. Also included are SigmaTels 3D stereo enhancement SS3D , and an extra true line-level out for Headphones or speaker Amplifiers The STAC9721 STAC9723 may be used as a secondary codec, with the STAC9700/STAC9704/STAC9707/STAC9744/STAC9745 or a 4-channel STAC9708 as the primary, in multiple codec configurations conforming to the AC'97 Rev. 2.1 specification. This configuration CAN provide up to six-channel output, providing AC-3 playback for DVD applications. The STAC9721 STAC9723 communicates via the five-wire AC- Link Interface with any AC-Link capable controller or advanced core Logic chip-set. Packaged in an AC'97 compliant 48-pin TQFP, the STAC9721 STAC9723 CAN be placed on motherboards, daughter boards, add- on cards or AMR/MDC cards. By Unkown