WM8756

WM8756 192kHz, Six Channel SACD™ Compatible Audio DAC DESCRIPTION The WM8756 is a high performance 6-channel DAC designed for audio applications such as SACD™ players, DVD-V and DVD-A, home audio and theatre systems. The device supports data input word lengths from 16 to 32-bits and sampling rates up to 192kHz. The WM8756 can implement 2 or 6 channels at 192kHz for high-end DVDAudio, or 6 channels at up to 192kHz for surround applications. Additionally 64x DSD bitstream support is offered on all 6 channels. The WM8756 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and 6 DACs in a 48-pin TQFP package. The WM8756 also includes a digitally controllable mute and attenuator function on each channel, accessible during PCM operation. An on-chip multiplexer selects between PCM or DSD audio data input pins. The WM8756 supports hardware or software connection schemes for audio DAC control. The serial control interface provides access to a wide range of features including onchip mute, attenuation and phase reversal. Hardware pincontrollable operation is also available. The WM8756 is an ideal device for all surround sound applications supporting the SACD™ audio format, such as SACD players, multi-format players and home entertainment systems. FEATURES 6-Channel DAC with PCM or Bitstream (DSD) operation. DSD 64x Bitstream Support for Super Audio CD™ Independent input pins for PCM and DSD data with on- chip multiplexer THD –9...