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ES1946S データシート(PDF) 1 Page - List of Unclassifed Manufacturers |
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ES1946S データシート(HTML) 1 Page - List of Unclassifed Manufacturers |
1 / 4 page ESS Technology, Inc. SAM0217-030601 1 ESS Technology, Inc. ES1946 PCI AudioDrive® Notebook Solution Product Brief DESCRIPTION THE ES1946 PCI AudioDrive ™ solution implements a single-chip PCI audio solution, providing high-quality audio processing while maintaining full legacy DOS game compatibility. With a dynamic range over 80 dB, the ES1946 complies with the Microsoft ®PC 98 / PC 99 specifications and meets WHQL audio requirements. The ES1946 forms a complete audio subsystem on a single chip for notebook platforms. The ES1946 operates at 3.3V digital supply and 5V analog supply. Combined with its built in power management support, the ES1946 is an ideal audio solution for notebooks. The ES1946 includes an I2S Zoom Video port interface that allows playback of MPEG audio, using the 16-bit stereo music DAC, thus reducing the total audio solution chip count. The ES1946 incorporates a microcontroller, ESFM ™ music synthesizer, 16-bit stereo wave ADC and DAC, 16-bit stereo music DAC, MPU-401 UART mode serial port, I2S Zoom Video port, serial port interface to external wavetable music synthesizer, dual game port, hardware master volume control, direct memory access (DMA) control logic with FIFO, and PCI bus interface logic. There are three stereo inputs (typically line- in, CD audio, and auxiliary line) and a mono microphone input. The ES1946 also incorporates Spatializer ® VBX™ technology, provided by Desper Products, Inc., a subsidiary of Spatializer Audio Laboratories, Inc. This processor expands the stereo sound field emitted by two speakers to create a resonant 3D sound environment. The ES1946 integrates the ESS Technology field-proven hardware design for DOS game compatibility with hardware FM synthesis ( ESFM synthesis) and three methods for legacy audio control interface: PC/PCI, distributed DMA, and transparent DMA (TDMA). TDMA requires no sideband signals from PC core logic chipsets in addition to the standard PCI 2.2 bus. TDMA is compatible with the Intel ® Pentium®, Pentium II®, and Celeron ™ chipsets as well as standard PCI add-in cards. The ES1946 provides a serial EEPROM interface for ease of programming the subsystem ID and subsystem vendor ID. The ES1946 can record, compress, and play back voice, sound, and music with built-in mixer controls. It supports stereo full-duplex operation for simultaneous record and playback. The ESFM synthesizer has extended capabilities within native mode operation providing superior sound and power-down capabilities. The ES1946 is compliant with Advanced Power Management (APM) 1.2, Advanced Configuration and Power Interface (ACPI) 1.0, and PCI Power Management Interface (PPMI) 1.0. It is available in an industry-standard 100-pin low profile quad flat pack (LQFP) package. FEATURES • Single, high-performance, mixed-signal, 16-bit stereo VLSI chip • 3.3V PCI parallel bus interface, revision 2.2. • Full native DOS games compatibility, via three technologies: —– TDMA —– DDMA —– PC/PCI • High-quality ESFM music synthesizer • Dynamic range (SNR) over 80 dB • Serial EEPROM interface for SID and SVID resource • Integrated Spatializer 3D VBX™ stereo audio effects technology provided by Desper Products, Inc., a subsidiary of Spatializer Audio Laboratories, Inc. Record and Playback Features • Record, compress, and play back voice, sound, and music • 16-bit stereo ADC and DAC • Programmable independent sample rates from 6 kHz up to 48 kHz for record and playback • Full-duplex operation for simultaneous record and playback • 2-wire hardware volume control for up, down, and mute Inputs and Outputs • Stereo inputs for line-in, auxiliary A (CD audio), and auxiliary B, and a mono input for microphone • I2S Zoom Video port interface for MPEG audio at up to 48 kHz • MPU-401 (UART mode) interface for wavetable synthesizers and MIDI devices • Integrated dual game port • Separate mono input and mono output for speakerphone Mixer Features • 7-channel mixer with stereo inputs for line, CD audio, auxiliary line, music synthesizer, digital audio (wave files), and mono inputs for microphone and speakerphone • Programmable 6-bit logarithmic master volume control Power • Advanced power management meets APM 1.2, ACPI 1.0, and PPMI 1.0 standards • 3.3V digital supply operation Compatibility • Supports PC games and applications for SoundBlaster™ and SoundBlaster Pro™ • Meets PC98 / PC99 and WHQL specifications |
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同様の説明 - ES1946S |
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