ESS ESS1887 free download

File name ESS1887.pdf

ES1887 AudioDrive® Product Brief DESCRIPTION The ES1887 AudioDrive is a single mixed-signal chip that adds 16bit stereo sound and FM music synthesis to personal computers. It is equipped with an embedded microprocessor, a 20-voice ESFMTM music synthesizer, 16-bit stereo wave Codec, 16-bit stereo music DAC, hardware master volume control, MPU-401 UART mode serial port, dual game ports, two serial port interfaces to an external DSP and an external wavetable music synthesizer, DMA control logic with FIFO, and ISA bus interface logic. There are three external stereo inputs (typically line, CD audio, and auxiliary line) and a mono input for a microphone. All of this is embodied in a single chip that can be designed into a motherboard, add-on card, or integrated into other peripheral cards such as voice/fax/ modem, VGA, LAN, I/O, and so forth. The ES1887 AudioDrive® can record, compress, and play back voice, sound, and music with two built-in 6-channel symmetric mixer controls. It supports full-duplex operation for simultaneous record and playback using two DMA channels. One of these channels supports bidirectional, 8-bit programmed I/O or DMA data transfers and the other supports 8-bit or 16-bit DMA playback. The MPU-401 hardware is for interfacing to an external MIDI serial port. The ES1887 music DAC allows the use of an external wavetable synthesizer through the ES1887's third serial port. The PC speaker volume can be controlled by software. Two software address selection modes allow for BIOS Plug and Play configuration. The dual game ports support two joysticks both having X,Y resistor value settings and two pushbutton switches. A DSP serial interface allows an external DSP to take over ADC or DAC resources. Advanced power management features include suspend/resume from disk or host-independent, self-timed power-down and automatic wake-up. The ES1887 is backward compatible and pin compatible with the ES1888. The ES1887 AudioDrive® is available in an industry-standard 100pin Plastic Quad Flat Pack (PQFP) package. ® FEATURES Single, high-performance, mixed-signal, 16-bit stereo VLSI chip Supports enhanced telegaming architecture for Windows and TM DOS game-over-modem High-quality, 20-voice ESFM music synthesizer Patented ESPCM compression New configurable DMA supports demand transfer and F-type TM ® Record and Playback Features Record, compress, and play back voice, sound and music 16-bit stereo ADC and DAC Programmable sample rates from 4 kHz to 44.1 kHz for record and playback Full-duplex operation for simultaneous record and playback 2- or 3-button hardware volume control for up, down, and mute Inputs/Outputs 3 stereo inputs for line-in, CD audio, and auxiliary line-in, and a mono input for microphone 3 stereo DAC with independent sample rate and filter control for simultaneous game, music, and system playback digital data streams MPU-401 (UART mode) interface for wavetable synthesizers and MIDI devices Integrated dual game p