CMEDIA CM102-A+

Best USB Audio Single Chip for PC Speakers Solution
CM102-A+/102S+
USB 2CH Audio Controller for Speaker
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
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
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, 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: 09/25/2005
Version:
-2-
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
TABLE OF CONTENTS
1. DESCRIPTIONS AND OVERVIEW
5
2. FEATURES
6
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
10
5. ORDERING INFORMATION
11
6. FUNCTION DESCRIPTIONS
12
6.1
12
USB INTERFACE
6.1.1
DEVICE DESCRIPTOR
12
6.1.2
CONFIGURATION DESCRIPTOR
13
6.1.3
USB AUDIO TOPOLOGY DIAGRAM
13
6.2
14
DYNAMIC RANGE CONTROL (DRC)
7. ELECTRICAL CHARACTERISTICS
15
7.1
ABSOLUTE MAXIMUM RATING
15
7.2
OPERATION CONDITIONS
15
7.3
SPERKER IMPEDANCE V.S. OUTPUT POWER (PER CHANNEL)
16
7.4
AUDIO PERFORMANCE
16
8. AUDIO PERFORMANCE CURVES
18
8.1
18
FREQUENCY RESPONSE (10K OHM LOADING)
8.1.1
18
FREQUENCY RESPONSE @ 44.1 KS/SEC
Date: 09/25/2005
Version:
-3-
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
8.1.2
8.2
18
FREQUENCY RESPONSE @ 48 KS/SEC
19
PASSBAND RIPPLE (10K OHM LOADING)
8.2.1
PASSBAND RIPPLE @ 44.1 KS/SEC
19
8.2.2
PASSBAND RIPPLE @ 48 KS/SEC
19
9. REFERENCE APPLICATION CIRCUIT
20
10. REFERENCE
20
Date: 09/25/2005
Version:
-4-
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
1. DESCRIPTIONS AND OVERVIEW
CM102-A+/102S+ series is a highly integrated single chip for USB stereo speakers application.
Minimum external components are needed for building an USB speaker system, which makes
CM102-A+/102S+ a simple and very cost-effective solution. Since no driver is necessary for
audio playback on all major OS. CM102-A+/102S+ provides a truly plug-and-play feature for
external digital audio playback.
For energy saving, USB suspend mode and resume is supported by CM102-A+/102S+. With
power amplifier enable pin and volume control VR input pin, a traditional speaker front panel
design can be built. This new single chip not only support 44.1KHz and 48KHz sampling rate
playback but also with X2 modulation for hi-frequency quality. Better yet, simplify anti-pop noise
solution was embedded on chip for general pop noise issues. All of the functions have been
approved by USB IF certification program. More flexible and customized design is possible with
GPIO pin, which is accessible by USB vendor specific request.
This one chip solution not only embedded USB transceiver, ADC, DAC component but also
integrated digital control power amplifier function for USB digital sound application. The Dynamic
Range Control function can support high efficiency volume output to get loudness sound effect
similar D class amplifier capability. Vender can just using single chip to saving external amplifier
component and getting a better listen experience when listen to a music source with wide
dynamic range.
Moreover, customers can use C-Media USB Audio Driver with Xear 3D functions to show up
digital speaker features and upgrade PC multi-media stereo function to be a CE like devices.
Xear 3D can support 10 band Equalizer, EnvironmentFX sound effects and virtual 7.1CH
speaker shifter. This driver is optional for free bundle.
Best USB Audio Chip for Digital Stereo Speakers Solution
Date: 09/25/2005
Version:
-5-
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
2. FEATURES
USB 2.0 Full Speed Compatible and USB IF Certification
USB audio device class specification v1.0 Compatible
USB bus powered 500mA operation with suspend mode support
USB audio function topology has 1 input terminal, 1 output terminal, and 1 feature unit
Embedded high performance 16 bit stereo audio DAC
Embedded Digital Control Power Amplifier for Speaker Driving
Embedded power on reset block and Power amplifier enable / disable control pin
Embedded X2 Modulation for Higher Audio Quality
Embedded Anti-Pop Circuit with Internal Feedback Structure
Embedded 5V to 3.3V Regulator with Voltage Level Detector for Single 5V External
Power Supply
Alternate zero bandwidth setting for releasing bandwidth on USB bus during inactive
operation
Single 12MHz crystal input with on-chip PLL and embedded USB transceiver
Support Dynamic Range Control (DRC) Feature to Provide a Better Listen Experience
Volume control input with simple external VR circuit
Isochroous transfer using adaptive synchronization with internal PLL
High performance 16-Bit Stereo, 48 / 44.1 KHz Sampling Rate for Audio Playback
3.3V IO with 5V tolerance; 3.3V core logics design
GPIO pin for application specific usage
Support S/PDIF output interface
LED Indicator Pin During Playback
Compatible with Win 98SE / Win ME / Win 2000 / Win XP, and Mac OS 9 / OS X
without additional driver
USB Software Drive Xear 3D Sound Technology With HRTF 3D, EAXTM, Speaker
Shifter and Virtual 7.1CH effects for free bundle
Compact 18 pin PDIP and SOP package
Date: 09/25/2005
Version:
-6-
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
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:
-7-
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
3.3 PIN SIGNAL DESCRIPTIONS
Pin #
Symbol
Type
Description
Power Amplifier Control Input, Connect to a Switch or
Pull-High in Normal Operation.
1
PAEN
DI, ST
H: Enable Power Amplifier (Normal Mode)
L: Disable Power Amplifier
DIO, 8mA, ST,
GPIO Pin, Controlled via Vender Specific Command
SR, PD
2
GPIO
3
XO
AO
Output Pin for 12MHz Oscillator
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 Bandgap 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
5V Power Supply for Analog Circuit
Date: 09/25/2005
Version:
-8-
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
16
AVSS
P
17
SPDIFO
DO, 8mA, SR
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
U
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)
Date: 09/25/2005
Version:
-9-
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
4. BLOCK DIAGRAM
Block Diagram Of CM102-A+/102S+
Date: 09/25/2005
Version:
- 10 -
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
5. ORDERING INFORMATION
Model Number
Package
CM102-A+/102S+
18-Pin PDIP
18-Pin SOP
Outline of Dimensions
Operating Ambient
Temperature
0 o C to +70 o C
0 o C to +70 o C
Supply Range
DVdd = 5V, AVdd = 5V
DVdd = 5V, AVdd = 5V
Dimensions shown in inches and (mm)
18- Plastic dual-in-line packaging (PDIP)
18- Pin SOP
Mechanical Dimension of CM102-A+
Mechanical Dimension of CM102S+
Date: 09/25/2005
Version:
- 11 -
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
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:
- 12 -
"
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
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
Version:
- 13 -
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
6.2 DYNAMIC RANGE CONTROL (DRC)
CM102-A+/102S+ 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:
- 14 -
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
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:
- 15 -
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
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)
Date: 09/25/2005
Version:
- 16 -
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
DAC (32 Ohm Loading)
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 (8 Ohm Loading)
DAC (4 Ohm Loading)
Date: 09/25/2005
Version:
- 17 -
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
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:
- 18 -
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
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-MEDIA
Digital Playback (PC -D-A) for Line O utput Passband
R ipple @ 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 a ta
Axis
1
1
1
2
C yan
Yello w
Solid
Solid
3
3
Fas tte s t.C h.1 Am pl!N o rm alize
Fas tte s t.C h.2 Am pl!N o rm alize
Left
Left
C o m m en t
WL-Pa s s ba ndR ipple-M48k.at2c
Date: 09/25/2005
Version:
- 19 -
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
9. REFERENCE APPLICATION CIRCUIT
Date: 09/25/2005
Version:
- 20 -
1.01
CM102-A+/102S+
USB Stereo Audio Chip for Speaker Integrated
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
-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:
- 21 -
1.01