ES1938S ESS, ES1938S Datasheet

ES1938S

Manufacturer Part Number

ES1938S

Description

PCI audio drive solution

Manufacturer

ESS

Datasheet

1.ES1938S.pdf (4 pages)

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ESS Technology, Inc.

DESCRIPTION

The ES1938 PCI AudioDrive

PCI audio solution, providing high-quality audio processing while

maintaining full legacy DOS game compatibility. With a dynamic

range over 80 dB, the ES1938 complies with the Microsoft

98 / PC 99 specifications and meets WHQL audio requirements.

The ES1938 forms a complete audio subsystem on a single chip

for motherboard platforms.

The ES1938 incorporates a microcontroller, ESFM

synthesizer, 16-bit stereo wave ADC and DAC, 16-bit stereo

music DAC, MPU-401 UART mode serial port, dual game port,

hardware master volume control, a serial port interface to

external wavetable music synthesizer, 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 ES1938 provides a serial EEPROM interface for ease of

programming the Subsystem ID and Subsystem Vendor ID.

The ES1938 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. Transparent DMA requires no sideband signals from PC

core logic chipsets in addition to the standard PCI 2.2 bus.

Transparent

Intel Pentium , Pentium II , and Celeron™ chipsets, as well

as standard PCI add-in cards.

The ES1938 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 ES1938 also incorporates

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 ES1938 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.

ESS Technology, Inc.

DMA

(TDMA)

solution implements a single-chip

Spatializer VBX technology,

compatible

with

music

the

FEATURES

Record and Playback Features

Inputs and Outputs

Mixer Features

Power

Compatibility

•

Single, high-performance, mixed-signal, 16-bit stereo VLSI chip

PCI parallel bus interface, revision 2.2

Full native DOS games compatibility, via three technologies:

High-quality ESFM music synthesizer

Dynamic range (SNR) over 80 dB

Integrated Spatializer 3D VBX stereo audio effects processor

provided by Desper Products, Inc., a subsidiary of Spatializer

Audio Laboratories, Inc.

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

Stereo inputs for line-in, auxiliary A (CD audio), and auxiliary B,

and a mono input for microphone

MPU-401 (UART mode) interface for wavetable synthesizers

and MIDI devices

Integrated dual game port

Separate mono input (MONO_IN) and mono output

(MONO_OUT) for speakerphone

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

Advanced power management meets APM 1.2, ACPI 1.0, and

PPMI 1.0 standards

Supports PC games and applications for SoundBlaster

SoundBlaster Pro

Meets PC 98 / PC 99 and WHQL specifications

–– TDMA

–– DDMA

–– PC/PCI

PCI AudioDrive

SAM0290-030601

Product Brief

Solution

ES1938

and

Related parts for ES1938S

ES1938S Summary of contents

Page 1

... Intel Pentium , Pentium II , and Celeron™ chipsets, as well as standard PCI add-in cards. The ES1938 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 ...

Page 2

... MONO_OUT FOUT_L FOUT_R CIN_L CIN_R VOLDN VOLUP MCLK MSD MSI MSO SW(A-D) T(A- Processor uses Spatializer VBX 3D technology provided by Desper Products, Inc subsidiary of Spatializer Audio Laboratories, Inc ...

Page 3

... ES1938 PRODUCT BRIEF ES1938 PIN DESCRIPTIONS Table 1 lists the ES1938 pin descriptions. Table 1 ES1938 Pin Descriptions Names Pin Numbers I/O VDDD 1, 17, 64 AD[31:0] 2:7, 9:16, I/O Address and data lines from the PCI bus. 69:76, 79, 82:88, 98:99 CBE[3:0]B 8, 77, 89, 97 I/O PCI command/byte enable VOLDN 20 I VOLUP ...

Page 4

... LOCKB 95 I/O PCI lock. PAR 96 I/O PCI parity. ORDERING INFORMATION Part Number Description ES1938S PCI AudioDrive ESS Technology, Inc. 48401 Fremont Blvd. Fremont, CA 94538 Tel: (510) 492-1088 Fax: (510) 492-1898 4 Analog output of PCSPKI with volume control. Normally low digital PC speaker signal input. This signal is converted to an analog signal with volume control and appears on analog output PCSPKO ...

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