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 DVD-Audio, 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.

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 –96dB, SNR 106dB (‘A’ weighted @ 48kHz)
• PCM mode Sampling Rate: 8kHz – 192kHz
• Master or slave operation with Normal or Phase modulation method of DSD data transfer
• 3-Wire Serial Control Interface
• Programmable PCM Audio Data Interface Modes
    − I2S, Left, Right Justified or DSP
    − 16/20/24/32 bit Word Lengths
• Independent Digital Volume Control on Each Channel with 127.5dB Range in 0.5dB Steps (in PCM mode)
• 3.0V – 5.5V Supply (3.3V digital / 5V analogue option)
• 48-pin TQFP Package

APPLICATIONS
• Super Audio CD (SACD™) Players
• Universal and Multi-Format disc players
• Home theatre systems