DESCRIPTION
WM9704Q is a high quality audio codec compliant with the AC’97 Revision 2.1 specification. It performs full duplex 18-bit codec functions from 8 to 48k samples/s and offers excellent quality with high SNR. Features include 3D sound and line-level outputs. Support is also provided for variable sample rates and master/slave mode operation. Additionally the WM9704Q provides two proprietary modes:
4-channel quad mode enables two channels of ADC and DAC plus an additional two DAC channels as rear outputs.

FEATURES
• 4 DAC channels, stereo ADC
• Balanced mixer architecture
• S/N ratio > 95dB
• Variable rate audio and modem support
• Analogue 3D stereo enhancement
• Line level outputs
• Master/slave ID selection
• Low power implementation
• 3.3V or 5V operation
• 48-pin TQFP package

APPLICATIONS
• 4-channel surround sound solution implemented with 2 additional internal DACs
• 6-channel surround sound supported via connection of a stereo DAC (WM8725) to GPIO pins
• Supports 4-channel playback of analogue sources such as CD