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ESS Technology, Inc.
DESCRIPTION
ES1946 PCI AudioDrive Notebook Solution Product Brief
(R)
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
THE ES1946 PCI AudioDriveTM 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(R) 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, ESFMTM 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 linein, CD audio, and auxiliary line) and a mono microphone input. The ES1946 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 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(R) Pentium(R), Pentium II(R), and CeleronTM 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.
* * Dynamic range (SNR) over 80 dB * Serial EEPROM interface for SID and SVID resource * Integrated Spatializer 3D VBXTM 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 SoundBlasterTM and
SoundBlaster ProTM
* Meets PC98 / PC99 and WHQL specifications
ESS Technology, Inc.
SAM0217-030601
1
ES1946 PRODUCT BRIEF
BLOCK DIAGRAM
Figure 1 shows the ES1946 block diagram.
ANALOG SUBSYSTEMS RECORDING SOURCE AND INPUT VOLUME CONTROL STEREO PROGRAMMABLE MIXER OUTPUT VOLUME AND MUTE CONTROL RECORD MONITOR AOUT_L AOUT_R MONO_OUT
MIC LINE_L LINE_R AUXA_L AUXA_R AUXB_L AUXB_R MONO_IN CMR VDDA GNDA CAP3D PCSPKI PCSPKO
REF GEN
FOUT_L FOUT_R 16-BIT STEREO GAME DAC/ADC 16-BIT STEREO MUSIC DAC 16-BIT STEREO SYSTEM DAC HARDWARE VOLUME CONTROL ESFM FM MUSIC SYNTHESIZER SID AND SVID CONFIGURATION CIN_L CIN_R
3D PROCESSOR* PC SPEAKER VOLUME CTRL
DATA BUFFER WITH 256 BYTE FIFO
VOLUP / SEDI
VOLDN / SECS
AD[31:0] INTAB SIRQ PCLK PRSTB CBE[3:0]B PAR FRAMEB IRDYB TRDYB STOPB IDSEL DEVSELB REQB GNTB LOCKB CLKRUNB PCPCIREQB PCPCIGNTB
SEDO / IISLR SECLK
PCI BUS INTERFACE
I2S ZOOM VIDEO PORT WAVETABLE SERIAL PORT MPU-401 SERIAL PORT AND FIFOs DUAL GAME PORT MCLK / IISCLK MSI MSO
MSD / IISDATA
SW(A-D) T(A-D) XI XO
ROM AND RAM
MICROCONTROLLER
CLOCK GENERATOR AND TIMER
* 3D Processor uses Spatializer VBX 3D technology provided by Desper Products, Inc. a subsidiary of Spatializer Audio Laboratories, Inc.
Figure 1 ES1946 Block Diagram.
PINOUT
Figure 2 shows the ES1946 pinout diagram.
AD25 AD26 AD27 AD28 AD29 AD30 AD31 REQB GNTB PCLK PRSTB VDDD CLKRUNB PCPCIGNTB PCPCIREQB INTAB SEDO/IISLR SECLK SIRQ MSI MSO PCSPKI PCSPKO GNDD AOUT_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
ES1946S 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
SAM0217-030601
VDDD AD13 AD12 AD11 AD10 AD9 AD8 CBE0B AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 VDDD XO XI SECS/VOLDN SEDI/VOLUP IISCLK/MCLK IISDATA/MSD GNDD MONO_OUT
Figure 2 ES1946 Pinout Diagram
ESS Technology, Inc.
ES1946 PRODUCT BRIEF
ES1946 PIN DESCRIPTION
Table 1 lists the ES1946 pin descriptions. Table 1
Names VDDD AD[31:0]
ES1946 Pin Descriptions
Pin Numbers 1, 17, 64, 80 2:7, 9:16, 69:76, 79, 82:88, 98, 99 8, 77, 89, 97 18 19 I/O I I/O Digital supply voltage (3.0V 3.6V). Address and data lines from the PCI bus. Descriptions
CBE[3:0]B XO XI VOLDN SECS VOLUP SEDI MCLK
I/O O I I O I O I
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. Serial EEPROM chip select. Active-low volume increase button input with internal pull-up. Serial data output to EEPROM. Input with internal pull-down. Music serial clock from external wavetable music synthesizer. Serial shift clock for I2S interface. Input with internal pull-down. Music serial data from external wavetable music synthesizer. Serial data for I2S interface. IIS and hardware wavetable cannot coexist. 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 pins. These pins connect to the X-Y positioning variable resistors for the two joysticks. 5V-tolerant. Active-low joystick switch setting inputs. These SW pins have internal pull-up resistors. 5V-tolerant pins. 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. Common mode reference voltage (2.25V 5%). 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 (5V 5%). Must be greater than or equal to VDDD-0.3V. Filter outputs, right and left. AC-coupled externally to CIN_R and CIN_L 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 AC load.
20
21
22 IISCLK MSD IISDATA 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 ESS Technology, Inc. 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 I I I O I I/O I I I O I I I I O I I O
SAM0217-030601
3
ES1946 PRODUCT BRIEF
Table 1
Names PCSPKO PCSPKI MSO MSI SIRQ SECLK SEDO IISLR INTAB
ES1946 Pin Descriptions (Continued)
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
a
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. 5V-tolerant input. MIDI serial data output. MIDI serial input. Schmitt trigger input with internal pull-up resistor. Either MPU-401 or SoundBlaster formats. Serialized IRQ. Clock for serial EEPROM. Pull-up to VDDD via external 47k resistor. Serial data input from EEPROM. Left/Right strobe for I2S interface. PCI interrupt request. PC/PCI serialized DREQ output (optional motherboard PC/PCI implementation). PC/PCI serialized DACK input (optional motherboard PC/PCI 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.
O I
a
I/O O I I O O I I/O I I I O I I/O I/O I/O I/O I/O I/O I/O
PCPCIREQB PCPCIGNTB CLKRUNB PRSTB PCLK GNTB REQB IDSEL FRAMEB IRDYB TRDYB DEVSELB STOPB LOCKB PAR
a
a. 1 pins are 5V pins with 3.3V digital supply on VDDD.
ORDERING INFORMATION
Part Number ES1946S Description PCI AudioDrive Controller for Notebook 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.
SAM0217-030601

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