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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.
®

FEATURES
· Single, high-performance, mixed-signal, 16-bit stereo VLSI chip · 3.3 volt PCI parallel bus interface, revision 2.2. · Full native DOS games compatibility, via three technologies:
­ TDMA ­ DDMA ­ PC/PCI High-Quality ESFMTM music synthesizer

The ES1946 operates at 3.3 volt digital supply and 5 volt 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 which 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, 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® 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 3-D sound environment. The ES1946 integrates ESS' field-proven hardware design for DOS game compatibility with hardware FM synthesis (ESFMTM 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. TDMA is compatible with the Intel® Pentium®, Pentium II®, 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 ESFMTM 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 Thin Quad Flat Pack (TQFP) package.

· · Dynamic range (SNR) over 80 dB · Serial EEPROM interface for SID and SVID resource · Integrated Spatializer® 3-D 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

· 3.3 volt digital supply operation
Compatibility

· Supports PC games and applications for Sound BlasterTM and
Sound BlasterTM Pro

· Supports Microsoft® WindowsTM Sound System® · Meets PC 98 / PC 99 and WHQL specifications
ESS Technology, Inc. SAM0217-122399 1

ES1946 PRODUCT BRIEF

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 AOUT_L AOUT_R MONO_OUT

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 ESFMTM FM MUSIC SYNTHESIZER SID AND SVID CONFIGURATION CIN_L CIN_R

3-D PROCESSOR* PC SPEAKER VOLUME CTRL

DATA BUFFER WITH 256 BYTE FIFO

VOLDN / SECS VOLUP / SEDI

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 MSD / IISDATA MSI MSO SW(A-D) T(A-D) XI XO * 3-D Processor uses Spatializer® VBXTM 3-D technology provided by Desper Products, Inc. a subsidiary of Spatializer Audio Laboratories, Inc.

ROM AND RAM

MICROCONTROLLER

CLOCK GENERATOR AND TIMER

PINOUT
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 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

SAM0217-122399

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

ESS Technology, Inc.

ES1946 PRODUCT BRIEF

PIN DESCRIPTION
Name VDDD AD[31:0] Number 1,17, 64, 80 69­76, 79, 82­88, 98, 99, 2­7, 9­16 77,89,97,8 18 19 20 21 22 23 24,52,81,100 25 26 30:27 34:31 35,36 37,38 39 40 41 42 43 44,45 46,47 48,49 50,51 53 54 55 56 57 58 59 I/O Description I Digital supply voltage (3.0 V ± 3.6 V). I/O Address and data lines from the PCI bus.

CBE[3:0]B XO XI VOLDN SECS VOLUP SEDI MCLK 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 PCSPKO PCSPKI MSO MSI SIRQ SECLK SEDO IISLR

I/O PCI command/byte enable. O Oscillator output. Connect to external 14.318 MHz crystal. I I I I I I I I I I I I 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 (ES692). Serial shift clock for I2S interface. Input with internal pull-down. Music serial data from external wavetable music synthesizer (ES692). Serial data for I2S interface. IIS and hardware wavetable cannot co-exist. Digital ground. Mono input to mixer and ADC. This pin has an internal pull-up to CMR. Active-low joystick switch setting inputs. These SW pins have internal pull-up resistors. Five volt 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.

O Serial EEPROM chip select. O Serial data output to EEPROM.

O Mono output with source select and volume control (including mute). This pin can drive an external 5k AC load. I/O Joystick timer pins. These pins connect to the X-Y positioning variable resistors for the two joysticks. Five vol t tolerant.

O Common mode reference voltage (2.25 V ± 5%). Bypass this pin to analog ground with 47 µF electrolytic in parallel with a .1 µF capacitor. I I I I I I Microphone input. MIC has an internal pull-up resistor to CMR. Analog ground. Bypass capacitor to analog ground for 3-D effects. Analog supply voltage (5 V ± 5%). Must be greater than or equal to VDDD - 0.3 V. 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.

O Filter outputs, right and left. AC-coupled externally to CIN_R and CIN_L to remove DC offsets.

O Line-level stereo outputs, left and right. These pins can drive a 5k AC load. O Analog output of PCSPKI with volume control. Ia Normally low digital PC speaker signal input. This signal is converted to an analog signal with volume control and appears on analog output PCSPKO. Five volt tolerant input. MIDI serial input. Schmitt trigger input with internal pull-up resistor. Either MPU-401 or Sound Blaster formats.

O MIDI serial data output. Ia I/O Serialized IRQ. O Clock for serial EEPROM. Pull-up to VDDD via external 47K resistor. I I Serial data input from EEPROM. Left/Right strobe for I2S interface.

INTAB
PCPCIREQB PCPCIGNTB CLKRUNB PRSTB PCLK GNTB REQB IDSEL FRAMEB IRDYB TRDYB DEVSELB STOPB LOCKB PAR

60
61 62 63 65 66 67 68 78 90 91 92 93 94 95 96

O PCI interrupt request.
O PC/PCI serialized DREQ output. (Optional motherboard PC/PCI implementation.) I I I I I PC/PCI serialized DACK input. (Optional motherboard PC/PCI implementation.) PCI reset. PCI clock. This clock times all PCI transactions. PCI busmaster grant. PCI device select for configuration. I/O PCI clock state for power management.

O PCI busmaster request, tri-state output. I/O PCI cycle frame. I/O PCI initiator ready. I/O PCI target ready. I/O PCI device select. I/O PCI stop transaction. I/O PCI lock. I/O PCI parity.

a. 1a pins are 5 volt pins with 3.3 volt digital supply on VDDD.

ESS Technology, Inc.

SAM0217-122399

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ES1946 PRODUCT BRIEF

ANALOG CHARACTERISTICS
Parameter Analog supply voltage Reference voltage Pins VDDA CMR LINE_L, LINE_R, AUXA_ L, AUXA_R, AUXB_L, AUXB_R, MIC, MONO_IN CIN_L, CIN_R FOUT_L, FOUT_R Output impedance AOUT_L, AOUT_R, MONO_OUT max load for full-scale output range MIC ­ preamp ON ­ preamp OFF Input voltage LINE_L, LINE_R, AUXA_L, AUXA_R, AUXB_L, AUXB_R, MONO_IN 3.4 35 3.5 10 Min 4.75 Typ 5.0 2.25 1.25 Max 5.25 Unit V V k

TYPICAL APPLICATION
PCI Bus
+5 V GND

ES1946
78L05 Regulator VDDD GNDD PRSTB PCLK GNTB IDSEL FRAMEB TRDYB STOPB VDDA GNDA AUXA_L AUXA_R AUXB_L AUXB_R LINE_L LINE_R MONO_IN CD In Left CD In Right AuxB In Left AuxB In Right Line In Left Line In Right Mono In Mic In + +

+12 V

Input Impedance

50 5

65 6.5

k k k
32 4

150 2.8 3.4

mVp-p Vp-p Vp-p
From Timer Chip

PAR LOCKB MIC REQB AOUT_L DEVSELB AOUT_R IRDYB AD[31:0] MONO_OUT PCSPKO CEB[3:0]B CLKRUNB FOUT_L INTAB CIN_L FOUT_R PCSPKI CIN_R 14.31818 MHz XI XO

To Stereo Amplifier

AOUT_L, AOUT_R , Output voltage MONO_OUT full-scale output range Gain Mic preamp

Vp-p

SIRQ PCPCIGNTB PCPCIREQB

+ CMR CAP3D

26

dB

Sideband Connector

PC/PCI MB Implementation IISDATA IISCLK IISLR/SEDO

DIGITAL CHARACTERISTICS
Symbol Parameters VDDD VIH1 Digital supply voltage Input high voltage: All inputs except MSD, MCLK, SW(A - D), VOLUP, VOLDN Input high voltage: MSD, MCLK Input high voltage: SW(A-D), VOLUP, VOLDN Input low voltage: All inputs except: MSD, MCLK, SW(A - D), VOLUP, VOLDN Input low voltage: MSD, MCLK Input low voltage: SW(A - D), VOLUP, VOLDN Output high voltage Output low voltage 2.4 0.55 Min 2.2 Max Unit Conditions V V VDDD = max VDDD = max 4.75 5.25

MSI MSO SWA SWB SWC SWD

Zoom Video Port MPEG Audio 93LC46/66 (EEPROM) DO CLK CS

SECLK

TA TB TC TD

VIH2 VIH3 VIL1

2.6 4.1 0.8

V V V

VDDD = max VDDD = max VDDD = min

DI optional UP Hardware Volume DOWN VOLUP/SEDI VOLDN/SECS

Game Port

VIL2 VIL3 VOH VOL

1.2 1.3

V V V V

VDDD = min

BUNDLED SOFTWARE AND DRIVERS
VDDD = min VDDD = max IOH = -3 mA VDDD = min IOL = 6 mA

· AudioRackTM · Device Drivers for:
­ Microsoft Windows®95/Windows®98 ­ Microsoft WindowsTM NT 4.0

MAXIMUM RATINGS
Rating Analog supply voltage Digital supply voltage Input voltage Operating temperature range Storage temperature range Symbol VDDA VDDD VIN TA TSTG Value -0.3 to 7.0 V -0.3 to 7.0 V -0.3 to 7.0 V 0 to 70 °C -50 to 125 °C

SERVICE AND SUPPORT
· Evaluation Kit · Manufacturing Kit · Reference Design
(P) U.S. Patent 4,384,169 and others, other patents pending. AudioDrive® is a registered trademark of ESS Technology, Inc. ESFMTM, and AudioRackTM Technology, Inc. are trademarks of ESS

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.

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.

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© 1999 ESS Technology, Inc. All rights reserved.

SAM0217-122399