DESCRIPTION
WM9708 is a high-quality stereo audio codec compliant with the AC’97 Revision 2.1 specification. It performs full duplex 18-bit codec functions and supports variable sample rates from 8 to 48k samples/s and offers excellent quality with high SNR. Additional features include 3D sound enhancement, line-level outputs, and hardware sample rate conversion.

AC’97 FEATURES
• 18-bit stereo codec
• S/N ratio > 95dB
• Multiple stereo input mixer
• Mono and stereo volume control
• Power management features
• Very low standby power
• Variable rate audio (VRA) support
• Analogue 3D stereo enhancement
• Line level outputs
• Supports Rev. 2.1 specified audio and modem sample rates and filtering
• PC-beep connection when device held reset
• 3.3V or 5V operation
• 28-pin SSOP package