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ES1918 AudioDrive Audio CODEC Product Brief
®
DESCRIPTION
The ES1918 AudioDrive® CODEC is a fully compliant AC'97 CODEC and mixer for a digital audio controller embodied in a single, mixed signal chip. The ES1918 is the perfect companion to ESS Technology's PCI audio solution, the MaestroTM family of digital controllers. The ES1918 is equipped with a stereo 16-bit DAC, a stereo 16-bit ADC, 7 inputs (4 stereo and 3 mono), 2 outputs (1 stereo and 1 mono), and a Time Division Multiplexed (TDM) serial AC-Link to a Maestro Digital Controller. The ES1918 audio CODEC can record and play back voice, sound, and music at 48 kHz sample rate. The playback mixer has 5 stereo inputs (Line, CD, Video, Aux, and PCM digital audio) and 3 mono inputs (Mic, Phone, and PC beep). The record multiplexer has 5 stereo inputs (Line, CD, Video, Aux, Mixer) and 3 mono inputs (Mic, Phone, and Mono mix). The mixer has two outputs (Line and Mono). Line out can be used for stereo output to multimedia speakers while Mono out can be used to output to a telephony subsystem or DLP (Down Line Phone). The ES1918 is available in an industry-standard 48-pin Low Quad Flat Pack (LQFP).
FEATURES
W W
Single, high-performance, mixed-signal, 16-bit stereo VLSI chip Meets or exceeds Audio Codec '97 analog performance specification W AC-Link digital serial interface (TDM format) to the Maestro Digital Controller
Record and Playback Features
Full-duplex stereo operation for simultaneous record and playback W 16-bit stereo ADC and DAC W 48 kHz sample rate
W
Inputs/Outputs
4 stereo inputs for line-in, CD, video, and auxiliary line-in 2 selectable mono inputs for microphone sharing a single mixer input and 1 mono input for phone W PC speaker input W 1 stereo output for line-out (for example, multimedia speakers) W 1 mono output for use with a telephony subsystem or DLP
W W
Power
APPLICATIONS
W W W W W W W
W W W W
Multimedia PCs 3-D PC Games Music Synthesis Business Audio DVD-ROM/Consumer Video Audio Playback Audio Conferencing Voice Recognition
Advanced Configuration and Power Interface (ACPI) support. Single 5.0 V power supply Meets Microsoft PC97 1.0 specifications with FAQ updates Meets Intel's Audio Codec '97 1.03 specifications
Compatibility
BLOCK DIAGRAM ES1918
L SYNC R BIT_CLK RESET# SDATA_OUT SDATA_IN
Mixer
DAC DAC Analog Mixing and Volume Control
L R +20 dB Mux
Mono Out Line Out PC Beep Phone Line CD Video Aux Mic1 Mic2
Digital Interface Register Set ADC ADC
ESS Technology, Inc.
SAM0044-102497
1
ES1918 PRODUCT BRIEF
PINOUT
LINE_OUT_R LINE_OUT_L NC NC CAP2 CAP1 AFILT2 AFILT1 Vrefout Vref AVss1 AVdd1
36 25 24
MONO_OUT AVdd2 NC NC NC AVss2 NC NC NC NC NC NC
37
ES1918
48-PIN LQFP
48 1 13 12
LINE_IN_R LINE_IN_L MIC2 MIC1 CD_R CD_GND CD_L VIDEO_R VIDEO_L AUX_R AUX_L PHONE
DIGITAL CHARACTERISTICS
Symbol
VIN VIL
Parameter
Input voltage range Input low voltage All except XTAL_IN Input low voltage XTAL_IN
Min
-0.30 0.7 x DVdd 2.2 2.6 -10 -10
Typ
5
Max
6.0 or VA + 0.3a 0.8 0.3 x DVdd 0.55 10 10
DVdd1 XTL_IN XTL_OUT DVss1 SDATA_OUT BIT_CLK DVss2
ANALOG CHARACTERISTICS
Unit
V V V V V V V µA µA µA Output voltage range Gain Input voltage range Output impedance Input impedance LINE_IN_L, LINE_IN_R, AUX_L, AUX_R, VIDEO_L, VIDEO_R, PHONE, MIC1, MIC2 MIC1, MIC2 PCBEEP only LINE_OUT_L, LINE_OUT_R, MONO_OUT max load for full-scale output range MIC1, MIC2 w/boost LINE_IN_L, LINE_IN_R, AUX_L, AUX_R, VIDEO_L, VIDEO_R, MIC1, MIC2 w/o boost LINE_OUT_L, LINE_OUT_R, MONO_OUT full-scale output range Mic preamp 10
Parameter
Reference voltage
SDATA_IN DVdd2 SYNC RESET# PC_BEEP
Pins
Vref (AVdd = 5.0V)
Min
Typ
2.25 to 2.75 50
Max
Unit
V
k
VIH
Input high voltage All except XTAL_IN Input high voltage XTAL_IN
30 100 5
k k k
VOH VOL
Output high voltage Output low voltage Input leakage current Output leakage current Output buffer drive current
0.1 1.0 1.12
Vrms Vrms
1.0
1.12
V
a.The maximum voltage is 6.0 or analog supply voltage + 0.3, whichever is greater.
20
22
dB
2
SAM0044-102497
ESS Technology, Inc.
ES1918 PRODUCT BRIEF
PIN DESCRIPTION
Name
DVdd2:1 XTL_IN XTL_OUT DVss2:1 SDATA_OUT BIT_CLK SDATA_IN SYNC RESET# PC_BEEP PHONE AUX_L, AUX_R VIDEO_L, VIDEO_R CD_L, CD_R CD_GND MIC1 MIC2 LINE_IN_L, LINE_IN_R AVdd2:1 AVss2:1 Vref Vrefout AFILT2:1 CAP2:1 NC LINE_OUT_L, LINE_OUT_R MONO_OUT
Number
9, 1 2 3 7, 4 5 6 8 10 11 12 13 14, 15 16, 17 18, 20 19 21 22 23, 24 38, 25 42, 26 27 28 30:29 32:31 33-34, 39-41, 43-48 35, 36 37
I/O
I I O I I O O I I I I I I I I I I I I I O O O O O O
Description
Digital supply voltage (5.0 V). Input from Maestro Digital Controller. Output to Maestro Digital Controller. Digital ground. Serial, Time Division Multiplexed (TDM) AC'97 input stream. 12.288 MHz serial data clock. Serial, Time Division Multiplexed (TDM) AC'97 output stream. 48 KHz fixed rate sample sync. AC'97 hardware master reset input. PC speaker beep pass-through. Mono input from telephony subsystem speakerphone or Down Line Phone (DLP). Auxiliary inputs left and right. Video audio inputs left and right. CD audio inputs left and right. CD input ground. Desktop microphone input. Second microphone input. Line inputs left and right. Analog supply voltage (5.0 V). Analog ground. Reference voltage Reference voltage out. 5 mA drive. Intended for mic bias. Anti-aliasing filter cap for the ADC channel. ADC and DAC reference caps. No connection. Master volume outputs, left and right. Mono output from master volume. Output to telephony subsystem or Down Line Phone (DLP).
ESS Technology, Inc.
SAM0044-102497
3
ES1918 PRODUCT BRIEF
MAXIMUM RATINGS
Rating
Analog supply voltage Digital supply voltage Input voltage Operating temperature range Storage temperature range
TYPICAL APPLICATION
Symbol
VA VD VIN TA TSTG
Value
-0.3 to 6.0 V -0.3 to 6.0 or VA + 0.3a -0.3 to 7.0 -10 to 70 °C -50 to 125 °C
5.0 V + /- 5% D Vdd 1 AV dd1 AV dd2 A U X _L A U X _R V ID EO _L V ID E O _R LIN E _IN _L LIN E_IN _R C D _L C D _R CDGND PHONE M IC 1 A ux In Left A ux In R ight Video In Le ft Video In R ight Lin e In Left Lin e In R ight C D In Left C D In R ight C D G round P hone In M ic1 In M ic2 In P C Bee p In
E S1918
a.The maximum voltage is 6.0 or analog supply voltage + 0.3, whichever is greater.
SERVICE AND SUPPORT
W
D Vdd 2
Evaluation Kit W Manufacturing Kit W Reference Design
M aestro D igital C ontro ller M aestro D igital C ontro ller SYNC B IT_C LK S D ATA _O U T S D ATA _IN M aestro D igital C ontroller
X T L_IN X T L_O U T
M IC 2 P C _BE E P AV ss1
IMPLEMENTATION PLATFORMS
W W W W W
SYNC B IT_C LK S D ATA _O U T S D ATA _IN R E S ET # VREF
AV ss2 D V ss1
Desktop PCs Notebook PCs Multifunction Cards Sound Cards Voice/Fax/Modem Cards
R E S E T# H ost P C I Bu s V R E FO U T CAP1
D V ss2
L IN E _O U T _L CAP2 LIN E _O U T _R AF ILT 1 AF ILT 2 M O N O _O U T To Stereo A m plifier
Line CD Phone Mic1/Mic2 PC Beep Mono Out
Video Aux SDATA_IN SDATA_OUT BIT_CLK SYNC RESET# Line Out
ES1918 interfaced with a Maestro Digital Controller
ES1918
MaestroTM Digital Controller
PCI Bus
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. Patent 4,214,125 and others, other patents pending. AudioDrive® is a registered trademark of ESS Technology, Inc. MaestroTM is a trademark of ESS Technology, Inc. All other trademarks are owned by their respective holders and are used for identification purposes only.
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© 1997 ESS Technology, Inc. All rights reserved.
SAM0044-102497