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| ESS Technology, Inc. DESCRIPTION The ES1938 PCI AudioDrive(R) 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 ES1938 complies with the Microsoft(R) PC 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, ESFMTM music 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 DMA (TDMA) is compatible with the Intel(R)Pentium(R), Pentium II(R), and CeleronTM 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 Spatializer(R) VBXTM 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 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. ES1938 PCI AudioDrive(R) Solution Product Brief FEATURES * 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: -- TDMA -- DDMA -- PC/PCI 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 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 * 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 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 Compatibility * Supports PC games and applications for SoundBlasterTM and SoundBlaster ProTM * Meets PC 98 / PC 99 and WHQL specifications ESS Technology, Inc. SAM0290-030601 1 ES1938 PRODUCT BRIEF BLOCK DIAGRAM Figure 1 shows the ES1938 block diagram. MIC LINE_L LINE_R AUXA_L AUXA_R AUXB_L AUXB_R MONO_IN CMR VDDA GNDA CAP3D PCSPKI PCSPKO ANALOG SUBSYSTEMS RECORDING SOURCE AND INPUT VOLUME CONTROL STEREO PROGRAMMABLE MIXER OUTPUT VOLUME AND MUTE CONTROL RECORD MONITOR SWITCHED CAPACITOR LOW-PASS FILTER 16-BIT STEREO GAME DAC/ADC 16-BIT STEREO MUSIC DAC 16-BIT STEREO SYSTEM DAC HARDWARE VOLUME CONTROL ESFM FM MUSIC SYNTHESIZER AOUT_L AOUT_R MONO_OUT REF GEN FOUT_L FOUT_R CIN_L CIN_R 3D PROCESSOR* PC SPEAKER VOLUME CTRL DATA BUFFER WITH 256 BYTE FIFO AD[31:0] INTAB SIRQ PCLK PRSTB CBE[3:0]B PAR FRAMEB IRDYB TRDYB STOPB IDSEL DEVSELB REQB GNTB LOCKB CLKRUNB PCPCIREQB PCPCIGNTB VOLDN VOLUP SID AND SVID CONFIGURATION PCI BUS INTERFACE WAVETABLE SERIAL PORT MPU-401 SERIAL PORT AND FIFOs DUAL GAME PORT ROM AND RAM CLOCK GENERATOR AND TIMER MCLK MSD MSI MSO SW(A-D) T(A-D) XI XO MICROCONTROLLER * 3D Processor uses Spatializer VBX 3D technology provided by Desper Products, Inc. a subsidiary of Spatializer Audio Laboratories, Inc. Figure 1 ES1938 Block Diagram PINOUT Figure 2 shows the ES1938 pinout diagram. A D2 5 AD26 A D2 7 A D2 8 A D2 9 A D3 0 AD31 REQB GN TB P CL K P RS T B V DDD CL K RUNB PCPCIGNTB P CP CI RE Q B I NT A B NC NC SIRQ MSI MSO P CS P K I P CS P K O GN DD A OU T_ R AD24 CBE3B IDSEL AD23 VDDD GNDD AD22 AD21 AD20 AD19 AD18 AD17 AD16 CBE2B FRAMEB IRDYB TRDYB DEVSELB STOPB LOCKB PAR CBE1B AD15 AD14 GNDD 75 76 51 50 ES 1938S 100-Pin LQFP 100 1 26 25 AOUT_L LINE_R LINE_L CIN_R CIN_L FOUT_L FOUT_R VDDA CAP3D GNDA MIC CMR AUXA_R AUXA_L AUXB_R AUXB_L SWA SWB SWC SWD TA TB TC TD MONO_IN 2 SAM0290-030601 V DDD A D1 3 A D1 2 A D1 1 A D1 0 A D9 A D8 CB E 0 B A D7 A D6 A D5 A D4 A D3 A D2 A D1 A D0 V DDD XO XI V OL DN VOLUP M CL K MSD G NDD M O NO_ OU T Figure 2 ES1938 Pinout Diagram ESS Technology, Inc. ES1938 PRODUCT BRIEF ES1938 PIN DESCRIPTIONS Table 1 lists the ES1938 pin descriptions. Table 1 ES1938 Pin Descriptions Names VDDD AD[31:0] Pin Numbers 1, 17, 64, 80 2:7, 9:16, 69:76, 79, 82:88, 98:99 8, 77, 89, 97 18 19 20 21 22 23 24, 52, 81, 100 25 26 30:27 31:34 35, 36 37, 38 39 40 41 42 43 44, 45 46, 47 48, 49 50, 51 I/O I I/O Digital supply voltage (5V5%). Address and data lines from the PCI bus. Descriptions CBE[3:0]B XO XI VOLDN VOLUP MCLK MSD GNDD MONO_OUT MONO_IN T(A-D) SW(A-D) AUXB_L, AUXB_R AUXA_L, AUXA_R CMR MIC GNDA CAP3D VDDA FOUT_R, FOUT_L CIN_L, CIN_R LINE_L, LINE_R AOUT_L, AOUT_R I/O O I I I I I I O I I/O I I I O I I I I O I I O PCI command/byte enable. Oscillator output. Connect to external 14.318-MHz crystal. Oscillator/external clock input. Connect to external 14.318-MHz crystal or clock source (must be CMOS levels). Active-low volume decrease button input with internal pull-up. Active-low volume increase button input with internal pull-up. Input with internal pull-down. Music serial clock from external wavetable music synthesizer. Input with internal pull-down. Music serial data from external wavetable music synthesizer. Digital ground. Mono output with source select and volume control (including mute). This pin can drive an external 5k AC load. Mono input to mixer and ADC. This pin has an internal pull-up to CMR. Joystick timer. These pins connect to the X-Y positioning variable resistors for the two joysticks. Active-low joystick switch setting inputs. These SW pins have an internal pull-up resistor. Auxiliary B inputs, left and right. AUXB_L and AUXB_R have internal pull-up resistors to CMR. Auxiliary A inputs, left and right. AUXA_L and AUXA_R have internal pull-up resistors to CMR. Normally intended for connection to an internal or external CD-ROM analog output. Common mode reference voltage (2.25V5%). Bypass this pin to analog ground with 47-F electrolytic in parallel with a 0.1-F capacitor. Microphone input. MIC has an internal pull-up resistor to CMR. Analog ground. Bypass capacitor to analog ground for 3D effects. Analog supply voltage (5V5%). Must be greater than or equal to VDDD -0.3V. Filter outputs, left and right. AC-coupled externally to CIN_L and CIN_R to remove DC offsets. ADC and first channel DAC mixer inputs. These pins have internal 50k pull-up resistors to CMR. Line inputs, left and right. LINE_L and LINE_R have internal pull-up resistors to CMR. Line-level stereo outputs, left and right. These pins can drive a 5k ohm AC load. ESS Technology, Inc. SAM0290-030601 3 ES1938 PRODUCT BRIEF Table 1 ES1938 Pin Descriptions (Continued) Names PCSPKO PCSPKI MSO MSI SIRQ NC INTAB PCPCIREQB PCPCIGNTB CLKRUNB PRSTB PCLK GNTB REQB IDSEL FRAMEB IRDYB TRDYB DEVSELB STOPB LOCKB PAR Pin Numbers 53 54 55 56 57 58, 59 60 61 62 63 65 66 67 68 78 90 91 92 93 94 95 96 I/O O I O I I/O -- O O I I/O I I I O I I/O I/O I/O I/O I/O I/O I/O Descriptions 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. MIDI serial data output. MIDI serial input. Schmitt trigger input with internal pull-up resistor. Either MPU-401 or SoundBlaster formats. Serialized IRQ. (Optional motherboard implementation.) Reserved. PCI interrupt request. PC/PCI serialized DREQ output. (Optional motherboard implementation.) PC/PCI serialized DACK input optional motherboard implementation. PCI clock state for power management. PCI reset. PCI clock. This clock times all PCI transactions. PCI busmaster grant. PCI busmaster request, tri-state output. PCI device select for configuration. PCI cycle frame. PCI initiator ready. PCI target ready. PCI device select. PCI stop transaction. PCI lock. PCI parity. ORDERING INFORMATION Part Number ES1938S Description PCI AudioDrive Package 100-pin LQFP ESS Technology, Inc. 48401 Fremont Blvd. Fremont, CA 94538 Tel: (510) 492-1088 Fax: (510) 492-1898 4 No part of this publication may be reproduced, stored in a retrieval system, transmitted, or translated in any form or by any means, electronic, mechanical, manual, optical, or otherwise, without the prior written permission of ESS Technology, Inc. ESS Technology, Inc. makes no representations or warranties regarding the content of this document. All specifications are subject to change without prior notice. ESS Technology, Inc. assumes no responsibility for any errors contained herein. (P) U.S. patents pending. AudioDrive is a registered trademark of ESS Technology, Inc. ESFM is a trademark of ESS Technology, Inc. Certain audio features of this product manufactured under a license from Desper Products, Inc., Spatializer and the circle-in-square device are trademarks owned by Desper Products, Inc. U. S. Patent numbers #4,308,423, #4,355,203, #5,412,731. All other trademarks are owned by their respective holders and are used for identification purposes only. (c) 2001 ESS Technology, Inc. All rights reserved. SAM0290-030601 |
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