CMEDIA CM101S+

Best USB Audio Single Chip for PC Entertainment
CM101S+
USB 2CH Audio Controller
(Dolby Digital Live Software Technology Bundle)
Datasheet
Version 1.01
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
CM101S+
USB Audio With Dolby Digital Live 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
U
Copyright (c) 2005-2007 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
U
C-Media, the C-Media Logo, Xear 3D, Xear 3D Logo and Speaker Shifter are trademarks of
C-Media Electronics Inc. in Republic of China and/or other countries. Dolby Digital and dts are
trademarks of Dolby Laboratories, Inc. and DTS Corporate. and All other brand, logos 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: 09/25/2005
Version:
-2-
1.01
CM101S+
USB Audio With Dolby Digital Live Solution
TABLE OF CONTENTS
1. DESCRIPTIONS AND OVERVIEW
5
2. FEATURES
5
3. PIN/SIGNAL DESCRIPTIONS
7
3.1 PIN ASSIGNMENT BY PIN NUMBER
7
3.2 PIN-OUT DIAGRAM
7
3.3 PIN SIGNAL DESCRIPTIONS
8
4. BLOCK DIAGRAM
9
5. ORDERING INFORMATION
10
6. FUNCTION DESCRIPTIONS
11
11
6.1 USB INTERFACE
6.1.1
DEVICE DESCRIPTOR
11
6.1.2
CONFIGURATION DESCRIPTOR
12
6.1.3
USB AUDIO TOPOLOGY DIAGRAM
12
6.2 DOLBY DIGITAL LIVE TECHNOLOGY
13
6.3 DYNAMIC RANGE CONTROL (DRC)
13
7. ELECTRICAL CHARACTERISTICS
16
7.1 ABSOLUTE MAXIMUM RATING
16
7.2 OPERATION CONDITIONS
16
7.3 SPERKER IMPEDANCE VS. OUTPUT POWER (PER CHANNEL)
17
7.4 AUDIO PERFORMANCE
17
8. AUDIO PERFORMANCE CURVES
19
19
8.1 FREQUENCY RESPONSE (10K OHM LOADING)
Date: 09/25/2005
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CM101S+
USB Audio With Dolby Digital Live Solution
8.1.1 FREQUENCY RESPONSE @ 44.1 KS/SEC
19
8.1.2 FREQUENCY RESPONSE @ 48 KS/SEC
19
20
8.2 PASSBAND RIPPLE (10K OHM LOADING)
8.2.1 PASSBAND RIPPLE @ 44.1 KS/SEC
20
8.2.2 PASSBAND RIPPLE @ 48 KS/SEC
20
9. REFERENCE APPLICATION CIRCUIT
21
10. REFERENCE
22
Date: 09/25/2005
Version:
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1.01
CM101S+
USB Audio With Dolby Digital Live Solution
1. DESCRIPTIONS AND OVERVIEW
CM101S+ is the world first USB audio chip that with Dolby Digital Live sounds technology
supporting. This new chip design can provided more efficiency features and high quality sound
for portable USB audio products application. It is a highly integrated single chip for USB stereo
audio and SPDIF output application. Minimum external components are needed for building an
USB audio system, which makes CM101S+ a simple and very cost-effective solution.
CM101S+ is design for all kind of PC base USB personal multi-media device products. It is USB
2.0 full speed compatible and utilizes USB bus power for plug-and-play feature. Via C-Media
Xear 3D Sound USB audio driver, users can avail themselves of a much better virtual 7.1 CH
environment capable. For high-end multi-media application, this light and portable personal
audio device can easy to processing any sound source to Dolby Digital AC-3 raw data by
real-time encoding function. The world first innovation software function to grade up every PC
system and output high quality digital sound effects for link up with high-end home theater
equipments like amplifier, DVD player or decoder etc.
This special feature is Dolby Digital Live function modules. As we know, Dolby Digital is the world
well-known sound technology brand and generality using on consumer electronics. Therefore, if
PC products need to be home theater equipment or media center this would be key feature and
selling point for product development. These functions not only provide easy bridge to connect
PCs and consumer electronics but also adding value and upgrade sound quality to PC products.
In the future, PCs can put on Dolby logo on it and provide advanced sound quality to end-user.
All of modules were implemented by C-Media in software technology and anyone can request
these features by license from Dolby Lab. through C-Media.
The world smallest devices for Dolby Digital Live content encoding application.
2. FEATURES
USB 2.0 Full Speed Compatible and USB IF Certification
USB audio device class specification v1.0 Compatible
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Version:
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1.01
CM101S+
USB Audio With Dolby Digital Live Solution
USB bus powered 500mA operation with suspend mode support
Single 12MHz crystal input with on-chip PLL and embedded USB transceiver
USB audio function topology has 1 input terminal, 1 output terminal, and 1 feature unit
Alternate zero bandwidth setting for releasing bandwidth on USB bus during inactive
operation
Isochroous transfer using adaptive synchronization with internal PLL
High performance 16-Bit Stereo, 48 / 44.1 KHz Sampling Rate for Audio Playback
Embedded high performance 16 bit stereo audio DAC
Embedded Digital Control Power Amplifier for Speaker Driving
SPDIF Output Interface
Support Dynamic Range Control (DRC) Feature to Provide a Better Listen Experience
Embedded X2 Modulation for Higher Audio Quality
Embedded Anti-Pop Circuit with Internal Feedback Structure
Volume control input with simple external VR circuit
GPIO pin for application specific usage
Support Power Amplifier Enable / Disable Control Pin
Embedded Power-On-Reset Block
LED Indicator Pin During Playback
Embedded 5V to 3.3V Regulator with Voltage Level Detector for Single 5V External
Power Supply
3.3V IO with 5V tolerance; 3.3V core logics design
Compact 18 pin SOP package
Dolby Digital Live Software Sound Technology Bundle
Software Xear 3D Sound Technology With HRTF 3D, EAXTM, Speaker Shifter and
Virtual 7.1CH effects
USB Software Driver Compatible with Win 98SE / Win ME / Win 2000 / Win XP
Date: 09/25/2005
Version:
-6-
1.01
CM101S+
USB Audio With Dolby Digital Live Solution
3. PIN/SIGNAL DESCRIPTIONS
3.1 PIN ASSIGNMENT BY PIN NUMBER
Pin # Signal Name Pin # Signal Name
1
PAEN
10
TEST
2
GPIO
11
VREF
3
XO
12
VOLADJ
4
XI
13
AVDD
5
DVDD5V
14
LOL
6
REGV
15
LOR
7
USBDP
16
AVSS
8
USBDM
17
SPDIFO
9
DVSS
18
PDSW
3.2 PIN-OUT DIAGRAM
Date: 09/25/2005
Version:
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CM101S+
USB Audio With Dolby Digital Live Solution
3.3 PIN SIGNAL DESCRIPTIONS
Pin #
Symbol
Type
Description
Power Amplifier Control Input, Connect to a Switch or
1
PAEN
DI, ST
Pull-High in Normal Operation.
H: Enable Power Amplifier (Normal Mode)
L: Disable Power Amplifier
DIO, 8mA, ST,
GPIO Pin, Controlled via Vender Specific Command
SR, PD
AO
Output Pin for 12MHz Oscillator
2
GPIO
3
XO
4
XI
AI
Input Pin for 12MHz Oscillator
5
DVDD5V
P
5V Power Supply
6
REGV
AO
Regulator Output 3.3V
7
USBDP
AIO
USB Data D+
8
USBDM
AIO
USB Data D-
9
DVSS
P
10
TEST
DI, ST, PD
11
VREF
AO
Digital Ground
Test Mode Select Pin, Pull-Down in normal Operation
Connecting to External Decoupling Capacitor for Embedded
Band gap Circuit; 2.25V Output
Analog Volume Control Input from external VR circuit.
12
VOLADJ
AI
0 ~ 2.25V:
+12 dB ~ 3 dB / mute
3.5 ~ 5V:
0 dB
13
AVDD
P
14
LOL
AO
Line Out Left Channel
15
LOR
AO
Line Out Right Channel
16
AVSS
P
17
SPDIFO
DO, 8mA, SR
5V Power Supply for Analog Circuit
Analog Ground
S/PDIF Data Output
Power Down Switch Control Signal Output
18
PDSW
DO, 8mA, SR
1: Normal Mode
0: Power Down Mode (Suspend Mode)
*Note :DI / DO / DIO – Digital Input / Output / Bi-Directional Pad
AI / AO / AIO – Analog Input / Output / Bi-Directional Pad
P – Power Pin
SR – Slew Rate Control
ST – Schmitt Trigger
PD / PU – Pull Down / Pull Up
5VT – 5 Volt Tolerant (3.3V Pad)
U
Date: 09/25/2005
Version:
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CM101S+
USB Audio With Dolby Digital Live Solution
4. BLOCK DIAGRAM
Block Diagram Of CM101S+
Date: 09/25/2005
Version:
-9-
1.01
CM101S+
USB Audio With Dolby Digital Live Solution
5. ORDERING INFORMATION
Model
Number
Package
Operating Ambient
Temperature
Supply Range
CM101S+
18-Pin PDIP
0 o C to +70 o C
DVdd = 5V, AVdd = 5V
Outline of Dimensions
Dimensions shown in inches and (mm)
18- Pin SOP
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CM101S+
USB Audio With Dolby Digital Live Solution
6. FUNCTION DESCRIPTIONS
6.1 USB INTERFACE
6.1.1 DEVICE DESCRIPTOR
Offset
Field
Size
Value
(Hex)
0
bLength
1
12
Total 18 Bytes
1
bDescriptorType
1
01
Device Descriptor
2
bcdUSB
2
0110
4
bDeviceClass
1
00
5
bDeviceSubClass
1
00
6
bDeviceProtocol
1
00
7
bMaxPacketSize0
1
08
8
idVendor
2
0D8C
Vendor ID
10
idProduct
2
0103
Product ID
12
bcdDevice
2
0010
Device Release Number
14
iManufacturer
1
01
Index of string descriptor describing
manufacturer -> “C-Media INC.”
15
iProduct
1
02
Index of string descriptor describing
product -> "C-Media USB Audio
Description
USB 1.1 compliant.
Endpoint Zero Size = 8 bytes
16
iSerialNumber
1
00
Index of string descriptor describing the
device’s serial number
17
bNumConfigurations
1
01
Configurations number = 1
Date: 09/25/2005
Version:
- 11 -
"
1.01
CM101S+
USB Audio With Dolby Digital Live Solution
6.1.2 CONFIGURATION DESCRIPTOR
Offset
Field
Size
Value
(Hex)
0
bLength
1
09
Total 9 Bytes
1
bDescriptorType
1
02
Configuration Descriptor
2
wTotalLength
2
008D
4
bNumInterfaces
1
03
5
bConfigurationValue
1
01
6
iConfiguration
1
00
7
bmAttributes
1
80
Self-powered without Remote Wakeup
8
bMaxPower
2
FA
Maximum power consumption of the
USB. 0xFA=500 mA
Description
Total length of data returned for this
configuration.
Number of interfaces supported by this
Configuration.
6.1.3 USB AUDIO TOPOLOGY DIAGRAM
USB streaming
ID = 01
Feature Unit
(Volume) (Mute)
ID = 0D
Date: 09/25/2005
Speaker
ID = 03
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CM101S+
USB Audio With Dolby Digital Live Solution
6.2 DOLBY DIGITAL LIVE TECHNOLOGY
C-Media Xear 3D™ Sound Solution provides another state-of-the-art high quality audio
function--Dolby Digital Live module. With this real-time software AC-3 encoder, the existing and
future customers who are using C-Media USB audio solution and devices can obtain this digital
quality audio output by S/PDIF format much easier than before. This function can output various
3D and environmental sound effects by high quality AC-3 encoding; in the meantime, it exhibits
supreme efficiency—it takes only 7% of CPU consumption from a Pentium 4 Processor.
Better yet, the pure digital signal not only prevents the audio signal from distortion, but also
reduces the number of wires connected between PC and a HI-FI audio system. That is to say,
this breakthrough real-time AC-3 encoder can digitally transmit data from PC to HI-FI system via
a single RCA cable, instead of three pairs in an analog signal case in the past.
Advantages of this feature:
1.Getting higher quality audio signal output compared with any other SPDIF-Out solutions.
C-Media Xear 3D™ Plus Dolby Digltal Live encoder sound solution can directly process and
transmit any PC sound source to digital AC-3 signal. Digital-transmitted data processed by
software driver can absolutely rule out the characteristics influence of DAC quality. Therefore,
users are able to get the best sound quality.
2.General PC audio SPDIF-Out solution can only provide 2CH PCM data to external amplifier.
If users want to output high quality digital AC-3 bit-stream, they have to rely on software DVD
Date: 09/25/2005
Version:
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CM101S+
USB Audio With Dolby Digital Live Solution
player, from which only DVD playback is achievable. In that case, it will limit and impair the
high quality multi-channel sound enjoyment. C-Media DDL solution not only retains the above
functions, but also provides other possible applications on PC audio. Xear 3D™ plus DDL
sound solution can process any type of sound sources, and people are able to obtain 7.1CH
output by using virtual SPEAKER SHIFTER™ to create optimized personal listening
environment.
3.In terms of 3D gaming, C-Media Xear 3D™ sound engine for real-time AC-3 encoder are far
better than Window DirectX 3D sound emulator, in that it is powered by sophisticated HRTF
(Head Related Transfer Function) library, supporting environmental effects (EAX 1.0 & 2.0
compatible) to create highly immersive 3D gaming experience. All interactive sound effects of
3D game can real-time encoding to AC-3 bit-stream and getting high quality digital signal to
external decoder and speakers for enjoyment.
Date: 09/25/2005
Version:
- 14 -
1.01
CM101S+
USB Audio With Dolby Digital Live Solution
6.3 DYNAMIC RANGE CONTROL (DRC)
CM101S+ include a new feature called Dynamic Range Control (DRC), and with a default ON
setting (Users can still turn it off within the Windows audio advance control panel)
Dynamic range is defined as the difference, in decibels (dB), between the loudest and quietest
sounds in any particular piece of audio content. Classical music is a good example, with ranges
from piano (soft) to forte to FFF (for extremely loud). Movies also typically have a wide dynamic
range, which may cause you to have to turn the volume up and down as scenes change. For
example, when watching a movie at home, you may be forced to turn up volume to hear the
dialog in a quiet scene, and then quickly turn it down again during a car chase scene that follows.
In this way, there may be times in a home theater environment when it would be useful to be able
to control the dynamic range.
+20dB
+10dB
Peaks Reduced
0dB
-10dB
-20dB
-30dB
-40dB
-50dB
B
A
Lower Levels Raised
-60dB
With Dynamic Range Control enabled, the full dynamic range (A) of the program is reduced (B).
Peaks Clipped
Peaks Reduced
DRC
Lower Levels
hard to heard
A
B
Lower Levels Raised
Date: 09/25/2005
Version:
- 15 -
1.01
CM101S+
USB Audio With Dolby Digital Live Solution
7. ELECTRICAL CHARACTERISTICS
7.1 ABSOLUTE MAXIMUM RATING
Symbol
Parameter
Value
Unit
Dvmin
Min Digital Supply Voltage
– 0.3
V
Dvmax
Max Digital Supply Voltage
+6
V
Avmin
Min Analog Supply Voltage
– 0.3
V
Avmax
Max Analog Supply Voltage
+6
V
Dvinout
Voltage on any Digital Input or Output Pin
–0.3 to +5.5
V
Avinout
Voltage on any Analog Input or Output Pin
–0.3 to +5.5
V
T stg
Storage Temperature Range
-40 to +125
B
B
0
P
C
P
ESD (HBM) ESD Human Body Mode
2000
V
ESD (MM)
ESD Machine Mode
200
V
Latchup
Latch Up Test
200
mA
7.2 OPERATION CONDITIONS
Min
Typ
Max
Unit
Analog Supply Voltage
4.5
5.0
5.5
V
Digital Supply Voltage
4.5
5.0
5.5
V
Total Power Consumption
-
-
500
mA
Suspend Mode Power
Consumption
-
-
320
uA
Operating ambient
temperature
0
-
70
Date: 09/25/2005
o
P
C
P
Version:
- 16 -
1.01
CM101S+
USB Audio With Dolby Digital Live Solution
7.3 SPERKER IMPEDANCE VS. OUTPUT POWER (PER CHANNEL)
Loading (Ohm)
4 Ohm
8 Ohm
32 Ohm
10K Ohm
Vpp
3.14
3.4
3.635
3.722
Vrms
1.11
1.202
1.285
1.316
W(rms/sin wave)
308 mW
181 mW
52 mW
0.17 mW
W(rms/square wave)
616 mW
361 mW
103 mW
0.35 mW
W(PMPO)
2460 mW
1450 mW
410 mW
1 mW
Items
*Note1: Test Condition @ 25oC, 5 Volt +- 10%
*Note2: Typical Output with THD+N < 1%; Maximal Output with THD+N < 10%
7.4 AUDIO PERFORMANCE
Min
Typ
Max
Unit
Resolution
--
16
--
Bits
Frequency response @ 48KHz
20
--
20K
Hz
Frequency Response @ 44.1KHz
20
--
20K
Hz
Passband Ripple @ 48 KHz
40
--
9.6K
Hz
Passband Ripple @ 44.1 KHz
40
--
8.8K
Hz
SNR
--
97.75
--
dB
Dynamic Range
--
96.27
--
dB
THD + N
--
-67.97
--
dB
Output Voltage (rms)
-
1.316
-
Vrms
DAC (10K Ohm Loading)
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CM101S+
USB Audio With Dolby Digital Live Solution
Min
Typ
Max
Unit
SNR
--
97.68
--
dB
Dynamic Range
--
95.99
--
dB
THD + N
--
-57.82
--
dB
Output Voltage (rms)
-
1.285
-
Vrms
SNR
--
97.67
--
dB
Dynamic Range
--
96.03
--
dB
THD + N
--
-53.28
--
dB
Output Voltage (rms)
-
1.202
-
Vrms
SNR
--
97.45
--
dB
Dynamic Range
--
95.89
--
dB
THD + N
--
-52.76
--
dB
Output Voltage (rms)
-
1.11
-
Vrms
DAC (32 Ohm Loading)
DAC (8 Ohm Loading)
DAC (4 Ohm Loading)
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Version:
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1.01
CM101S+
USB Audio With Dolby Digital Live Solution
8. AUDIO PERFORMANCE CURVES
8.1 FREQUENCY RESPONSE (10K OHM LOADING)
8.1.1FREQUENCY RESPONSE @ 44.1 KS/SEC
C-MEDIA
Digital Playback (PC-D -A) for Line Output Frequency
Response
05/31/05 14:10:33
+1
+0
d
B
r
-1
-2
-3
A
-4
-5
-6
20
50
100
200
500
1k
2k
5k
10k
Hz
Sw ee p
Trace
C olor
Line Style
Thick
D ata
Axis
1
1
1
2
C yan
Yellow
Solid
Solid
3
3
Fas ttes t.C h.1 Am pl!N orm alize
Fas ttes t.C h.2 Am pl!N orm alize
Left
Left
C om m ent
WL-Multitone-44k.at2c
8.1.2 FREQUENCY RESPONSE @ 48 ks/sec
C-MEDIA
Digital Playback (PC-D-A) for Line Output Frequency
Response
05/31/05 14:07:22
+1
+0
d
B
r
-1
-2
-3
A
-4
-5
-6
30
50
100
200
500
1k
2k
5k
10k
Hz
Sw eep
Trace
C olor
Line Style
Thick
D ata
Axis
1
1
1
2
C yan
Yellow
Solid
Solid
3
3
Fas ttes t.C h.1 Am pl!N orm alize
Fas ttes t.C h.2 Am pl!N orm alize
Left
Left
C om m ent
WL-Multitone-48k.at2c
Date: 09/25/2005
Version:
- 19 -
1.01
CM101S+
USB Audio With Dolby Digital Live Solution
8.2 PASSBAND RIPPLE (10K OHM LOADING)
8.2.1 PASSBAND RIPPLE @ 44.1 ks/sec
C-MEDIA
Digital Playback (PC -D-A) for Line Output Passband
Ripple @44.1ks/sec
05/31/05 14:11:07
+0.4
+0.2
d
B
-0
-0.2
-0.4
40
50
100
200
500
1k
2k
5k
8k
Hz
Sw eep
Trace
C olor
Line Style
Thick
D ata
Axis
1
1
1
2
C yan
Yellow
Solid
Solid
3
3
Fas ttes t.C h.1 Am pl!N orm alize
Fas ttes t.C h.2 Am pl!N orm alize
Left
Left
C om m ent
WL-Pas s bandR ipple-M44k.at2c
8.2.2 PASSBAND RIPPLE @ 48 ks/sec
C -MED IA
Digital Playback (PC-D-A) for Line O utput Passband
Ripple @48ks/sec
05/31/05 14:09:08
+ 0.4
+ 0.2
d
B
-0
-0.2
-0.4
40
50
100
200
500
1k
2k
5k
9k
Hz
Sw eep
Trace
C olor
Line Style
Thick
D ata
Axis
1
1
1
2
C yan
Yellow
Solid
Solid
3
3
Fas ttes t.C h.1 Am pl!N orm alize
Fas ttes t.C h.2 Am pl!N orm alize
Left
Left
C om m ent
WL-Pas s bandR ipple-M48k.at2c
Date: 09/25/2005
Version:
- 20 -
1.01
CM101S+
USB Audio With Dolby Digital Live Solution
9. REFERENCE APPLICATION CIRCUIT
Date: 09/25/2005
Version:
- 21 -
1.01
CM101S+
USB Audio With Dolby Digital Live Solution
10. REFERENCE
♦
Universal Serial Bus Specification, Version 2.0
♦
Universal Serial Bus Device Class Definition for Audio Devices, Version 1.0.
♦
Universal Serial Bus Device Class Definition for Human Interface Devices (HID), Version
1.11
♦
Dolby Digital Live function specification.
-End of Specifications-
C-MEDIA ELECTRONICS INC.
6F., 100, Sec. 4, Civil Boulevard, Taipei, Taiwan 106 R.O.C.
TEL:886-2-8773-1100
FAX:886-2-8773-2211
E-mail:sales@cmedia.com.tw
URL:http://www.cmedia.com.tw
Date: 09/25/2005
Version:
- 22 -
1.01