ES1879 Datasheet | ESS Technology

PRELIMINARY ES1879 Audio Drive® Solution Data Sheet DESCRIPTION The ES1879 Audio Drive® solution is a mixed-signal single-chip solution that adds 16-bit stereo sound and FM music synthesis to notebook puters. It is pliant with the Microsoft® PC97 specification and WHQL audio requirements. The ES1879 includes an embedded microcontroller, an OPL3™ superset ESFM™ music synthesizer, 16-bit stereo wave CODEC, 16-bit stereo system DAC, 16-bit stereo music DAC, 16-bit stereo I2S DAC, optional ISA Plug and Play (Pn P) 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 that allow interfacing with external DSP, wavetable, and MIDI (MPU-401 UART mode patible). 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 Audio Drive® can record, press, 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 Audio Drive® supports optional ISA Plug and Play with configuration for 4 logical devices: configuration device, audio plus ESFM™ 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...