Best USB Audio I/O Controller for
External High End 8CH Audio Devices
CM106-F/L High Integrated
USB Audio I/O Controller
DataSheet 1.3
C-MEDIA ELECTRONICS INC.
TEL: 886-2-8773-1100
FAX: 886-2-8773-2211
6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan 106, R.O.C.
For detailed product information, please contact
sales@cmedia.com.tw
CM106-F/L
High End 8CH DAC and 2CH ADC Integrated Solution
NOTICES
THIS DOCUMENT IS PROVIDED “AS IS” WITH NO WARRANTIES WHAT SO EVER,
INCLUDING ANY WARRANTY OF MERCHANT ABILITY, NONINFRINGEMENT, FITNESS FOR
ANY PARTICULAR PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY
PROPOSAL, DOCUMENT OR SAMPLE.
ALL RIGHTS RESERVED. NO PART OF THIS DOCUMENT MAY BE REPRODUCED OR
TRANSMITTED IN ANY FORM OR BY ANY MEANS, ELECTRONIC OR MECHANICAL,
INCLUDING INFORMATION STORAGE AND RETRIEVAL SYSTEMS, WITHOUT
PERMISSION IN WRITING FROM C-MEDIA ELECTRONICS, INC.
COPYRIGHT
Copyright (c) 2003-2004 C-Media Electronics Inc.
All rights reserved. All content included on this document, such as text, graphics, logos, button
icons, images, audio clips, digital downloads, data compilations, and software, is either the
exclusive property of C-Media Electronics Inc., its affiliates (collectively, "C-Media"), its content
suppliers, or its licensors and protected by Republic of China and international copyright laws.
TRADEMARKS
C-Media, the C-Media Logo, Xear 3D, Xear 3D Logo, Speaker Shifter, Smart Jack, and Smart
Audio Jack are trademarks of C-Media Electronics Inc. in Republic of China and/or other
countries. All other brand and product names listed are trademarks or registered trademarks of
their respective holders and are hereby recognized as such.
*C-Media reserves the right to modify the specifications without further notice*
Date: 09/01/2004
-2-
Version：
1.3
CM106-F/L
High End 8CH DAC and 2CH ADC Integrated Solution
Table of Contents
1. Description and Overview
2. Features
3. Pin Descriptions
3.1 CM106-F QFP 100 Pin Table
3.2 CM106-L LQFP 48 Pin Table
3.3 CM106-F QFP 100 Pin
3.4 CM106-L LQFP 48 Pin
4. Ordering Information
5. Function Block Diagram of CM106-F/L
6. Function Descriptions
6.1 Internal Register
6.2 MCU Interface
6.3 Serial EEPROM Content
6.4 DAC
6.5 ADC
6.6 Power Management
7. Volume Control
7.1 DAC Volume Control
7.2 ADC Volume Control
7.3 MIC / LINE-IN Monitor Volume Control
8. Electrical Characteristics
8.1 Absolute Maximum Rating
8.2 Recommended Operation Conditions
8.3 Audio Performance
9. Audio Performance Curves
9.1 AA path (Line In to Line Out) Frequency Response
9.2 AA path (Line In to Line Out) Cross Talk
9.3 DAC (Front) Frequency Response @ 48ks/sec
9.4 DAC (Front) Frequency Response @ 44.1ks/sec
9.5 DAC (Front) Pass Band Ripple @ 48ks/sec
9.6 DAC (Front) Pass Band Ripple @ 44.1ks/sec
9.7 ADC (Line In) Frequency Response @ 48ks/sec
9.8 ADC (Mic In) Frequency Response @ 48ks/sec
Date: 09/01/2004
-3-
Version：
1.3
CM106-F/L
High End 8CH DAC and 2CH ADC Integrated Solution
10. Application Circuit
10.1 CM106-L (LQFP 48) / CM106-F (QFP 100)
Date: 09/01/2004
-4-
Version：
1.3
CM106-F/L
High End 8CH DAC and 2CH ADC Integrated Solution
1. Description and Overview
CM106-F/L is a highly integrated single chip USB audio solution. All essential analog modules
are embedded in CM106, including 8CH DAC and earphone buffer, 2CH ADC, microphone
booster, PLL, regulator, and USB transceiver. It is very suitable for high end USB external audio
box, USB multi-channel headphone or USB audio interface multi-channel speaker set
application. Many features are programmable with external EEPROM and MCU interface. In
addition, MCU/EEPROM/GPIO control can easily via HID software interface. Better yet,
CM106-F/L support stereo MIC, phone jack sense, S/PDIF I/O and 48/44.1 Khz sampling rate.
Moreover, unique patent driver can support world first SPEAKER SHIFTER, full HRTF 3D,
EAX2.0, Karaoke and Dolby AC-3 real-time encoder function.
2. Features
USB spec. 2.0 full speed compliant
USB audio device class spec. 1.0 and USB HID class spec. 1.1 compliant
IEC60958 spec. compliant (consumer format S/PDIF input and output with
loop-back support)
SCMS (Serial Copy Management System) compliant
Dolby® digital audio streaming via S/PDIF out
USB remote wake-up support
8 channel DAC output with
16 bit resolution
3.1 Vpp (1.1 Vrms) biased at 2.25V output swing
Volume control and mute function
Earphone buffer
2X interpolator for digital playback data to improve quality
2 channel ADC input with
16 bit resolution
3.2 Vpp (or 4.0 Vpp programmed by vendor driver) biased at 2.25V input swing
Volume control and mute function
Additional headphone output with selectable source and phone jack sense
Date: 09/01/2004
-5-
Version：
1.3
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