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WM8756 数据表(PDF) 1 Page - Wolfson Microelectronics plc |
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WM8756 数据表(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 39 page  WM8756 192kHz, Six Channel SACD™ Compatible Audio DAC WOLFSON MICROELECTRONICS LTD www.wolfsonmicro.com Advance Information October 2001, Rev 1.3 Copyright 2001 Wolfson Microelectronics Ltd . 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. 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 on- chip mute, attenuation and phase reversal. Hardware pin- controllable 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 –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 − I 2S, 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 BLOCK DIAGRAM CONTROL INTERFACE DIGITAL FILTERS SIGMA DELTA MODULATOR SIGMA DELTA MODULATOR MUX MUX PCM/DSD DIGITAL FILTERS SIGMA DELTA MODULATOR SIGMA DELTA MODULATOR MUX MUX PCM/DSD DIGITAL FILTERS SIGMA DELTA MODULATOR SIGMA DELTA MODULATOR MUX MUX PCM/DSD AUDIO INTERFACE PCM DATA DSD DATA LOW PASS FILTER LOW PASS FILTER RIGHT DAC LEFT DAC BCKIN DSD4 DSD3 DSD2 DSD1 DSD0 DSDCLK64 DIN2 DIN1 DIN0 LRCIN DSDCLK128 DSD5 CSB DMCKSEL DMSLV MUTE MODE SCKI DSDB MD/DM MC/IWL ML/I2S OUT0R OUT2L GR2 OUT2R OUT1L GR1 OUT1R OUT0L GR0 LOW PASS FILTER LOW PASS FILTER RIGHT DAC LEFT DAC LOW PASS FILTER LOW PASS FILTER RIGHT DAC LEFT DAC AGND3 DGND AVDD1 AGND1 AVDD2 AGND2 DVDD LRCIN2 |
类似零件编号 - WM8756 |
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类似说明 - WM8756 |
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