Ess ESS1879 free download

File name ESS1879.pdf

ES1879 AudioDrive Solution Product Brief ® DESCRIPTION The ES1879 AudioDrive® solution is a mixed-signal single-chip device that provides 16-bit stereo sound and FM music synthesis for notebook computers. It is compliant with the Microsoft® PC 97 and PC98 specifications and WHQL audio requirements. The ES1879 includes an embedded microcontroller, an OPL3TM superset ESFMTM music synthesizer, 16-bit stereo wave CODEC, 16bit stereo system DAC, 16-bit stereo music DAC, 16-bit stereo I2S DAC, optional ISA Plug and Play (PnP) support, hardware master volume control, DMA control logic with FIFO, ISA bus interface logic, general-purpose I/O, and digital dual game port. The ES1879 also incorporates three serial ports which allow interfacing with external DSP, wavetable, and MIDI (MPU-401 UART mode compatible). In addition, the ES1879 offers I2S Zoom Video interface and support for the optional ES978 Expansion Audio Mixer in docking stations. A four-wire expansion analog bus and two-wire serial control bus connect the ES1879 with the ES978, allowing the ES1879 to engage the docking station's audio resources when docked. The ES1879 AudioDrive® can record, compress, and play back voice, sound, and music with built-in mixer controls. Using two high-performance DMA channels, the ES1879 supports fullduplex operation for simultaneous record and playback. One channel supports bidirectional DMA data transfers and the other supports DMA playback. The ES1879 AudioDrive® supports optional ISA Plug and Play with configuration for 4 logical devices: configuration device, audio plus ESFMTM synthesis, game port, and MPU-401. The integrated 3-D audio effects processor uses technology from Spatializer® Audio Laboratories, Inc. and expands the sound field emitted by two speakers to create a resonant 3-D sound environment. The MPU-401 hardware is for interfacing with an external MIDI serial port. The ES1879 music DAC allows the use of an external wavetable (ES689/ES69x) connected to a wavetable serial port. I/O address, DMA, and interrupt selection can be controlled through system software or Plug and Play. A DSP serial interface in the ES1879 allows an external DSP to take over ADC or DAC resources. The ES1879 supports telegaming architecture with headsets and includes data paths for host-based Acoustic Echo Cancellation processing. The enhanced dual game port supports hardware timing interrupt generation that eliminates the need for CPU polling. Advanced Power Management (APM) features include suspend and resume from disk. The ES1879 AudioDrive® solution is available in an industrystandard 100-pin Thin Quad Flat Pack (TQFP) package. FEATURES · Single, high-performance, mixed-signal, 16-bit stereo VLSI chip · · · · for digital audio High-quality, OPL3 superset ESFMTM music synthesizer High-performance DMA supports Demand Transfer or F-type Integrated 3-D audio effects processor from Spatializer® Power management support with low power operation for a notebook environment