ESS ESS1878 free download

File name ESS1878.pdf

ES1878 AudioDrive® Product Brief DESCRIPTION The ES1878 AudioDrive is a mixed-signal single-chip solution that adds 16-bit stereo sound and FM music synthesis to notebook computers. The ES1878 includes an embedded microprocessor, a 20-voice ESFMTM music synthesizer, 16-bit stereo ADCs and DACs, 16-bit stereo music 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 ES1878 also incorporates three serial ports which allow interfacing with external DSP, wavetable, and MIDI (MPU-401 UART mode compatible). In addition, the ES1878 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 ES1878 with the ES978, allowing the ES1878 to engage the docking station's audio resources when docked. The ES1878 AudioDrive® can record, compress, and play back voice, sound, and music with built-in mixer controls. Using two high-performance DMA channels, the ES1878 supports full-duplex operation for simultaneous record and playback. The ESFMTM synthesizer has extended capabilities within native mode operation providing superior sound and power down capabilities. The ES1878 is register compatible with Yamaha's OPL3TM FM synthesizer. The ES1878 AudioDrive® supports optional ISA Plug and Play with configuration for 4 logical devices: configuration device, audio plus ESFMTM, game port, and MPU-401. The MPU-401 serial port is for interfacing with an external MIDI device. The digital dual game port supports two joysticks with hardware timing. A DSP serial interface in the ES1878 allows an external DSP to take over ADC or DAC resources. A wavetable serial port allows the ES1878 to interface with either the ES689 or ES690 wavetables. I/O address, DMA, and interrupt selection can be controlled through system software or Plug and Play. Advanced Power Management (APM) features include suspend and resume from disk. The ES1878 is available in an industry-standard 100-pin Small Quad Flat Pack (SQFP) package. ® FEATURES W W Single, high-performance, mixed-signal, 16-bit stereo VLSI chip for digital audio High-quality, 20-voice ESFMTM music synthesizer; patents pending Patented ESPCM® compression Record, compress, and play back voice, sound, and music 16-bit stereo ADC/DAC for digital audio 2 additional stereo DACs for music synthesis and I2S from PC card Programmable sample rate from 4 kHz to 44.1 kHz for record and playback 2-button or 3-button hardware volume control for up, down, and mute Full-duplex operation for simultaneous record and playback 6-channel stereo mixer inputs for line, auxiliary A (CD audio), auxiliary B, digital audio (wave files), music synthesizer, I2S Zoom Video port plus a mono channel mixer input for microphone Programmable 6-bit logarithmic master volume control Simple hot-docking interface to