WM9714L

WM9714L AC’97 Audio Codec DESCRIPTION FEATURES The WM9714L is a highly integrated input/output device designed for mobile computing and communications. The chip is architected for dual CODEC operation, supporting hifi stereo CODEC functions via the AC link interface, and additionally supporting voice CODEC functions via a PCM type Synchronous Serial Port (SSP). A third, auxiliary DAC is provided which may be used to support generation of supervisory tones, or ring-tones at different sample rates to the main CODEC. The device can connect directly to mono or stereo microphones, stereo headphones and a stereo speaker, reducing total component count in the system. Cap-less connections to the headphones, speakers, and earpiece may be used, saving cost and board area. Additionally, multiple analogue input and output pins are provided for seamless integration with analogue connected wireless communication devices. All device functions are accessed and controlled through a single AC-Link interface compliant with the AC’97 standard. The 24.576 MHz master clock can be input directly or generated internally from a 13MHz (or other frequency) clock by an on-chip PLL. The PLL supports a wide range of input clock from 2.048MHz to 78.6MHz.  AC’97 Rev 2.2 compatible stereo CODEC - DAC SNR 94dB, THD –85dB - ADC SNR 87dB, THD –86dB - Variable Rate Audio, supports all WinCE sample rates - Tone Control, Bass Boost and 3D Enhancement  On-chip 45mW headphone driver  On-chip 400mW mono or st...