CMEDIA CM109

Best High Integration/Low Cost USB Audio Controller
for PC Internet Phone
CM109 USB I/O Controller
DataSheet
Version 1.3a
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
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
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) 2003-2006 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: 08/Sep/2005
Version:
-1-
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
TABLE OF CONTENTS
1. DESCRIPTIONS AND OVERVIEW
4
2. FEATURES
4
3. PIN DESCRIPTIONS
6
3.1 PIN ASSIGNMENT BY PIN NUMBER
6
3.2 PIN-OUT DIAGRAM
6
3.3 PIN SIGNAL DESCRIPTIONS
7
4. MCU INTERFACE
9
5. BLOCK DIAGRAM
9
6. ORDERING INFORMATION
10
7. FUNCTION DESCRIPTIONS
11
7.1 USB INTERFACE
11
7.1.1
DEVICE DESCRIPTOR
11
7.1.2
CONFIGURATION DESCRIPTOR
12
7.1.3
CONTENT FORMAT FOR 94C46
12
7.1.4
USB AUDIO TOPOLOGY DIAGRAM
13
7.2 JUMPER PINS AND MODE SETTING
13
7.3 HID FEATURE
14
7.3.1
HID DESCRIPTOR
15
7.3.2
WINDOWS SOFTWARE ARCHITECTURE FOR HID
16
7.4 INTERNAL REGISTERS
16
7.4.1
ACCESS VIA HID CLASS COMMAND
16
7.4.2
ACCESS VIA ENTERNAL INTERFACE BY MCU
19
Date: 08/Sep/2005
Version:
-2-
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
7.4.3
22
INDIRECT ACCESSED REGISTERS
7.5 MCU INTERFACE
23
7.6 BUZZER OUTPUT
28
8. ELECTRICAL CHARACTERISTICS
29
8.1 ABSOLUTE MAXIMUM RATING
29
8.2 OPERATION CONDITIONS
29
8.3 ELECTRICAL PARAMETERS
30
9. FREQUENCY RESPONSE GRAPHS
31
9.1 DIGITAL PLAYBACK FOR LINE OUTPUT FREQUENCY (10K OHM LOADING) 31
9.1.1
FREQUENCY RESPONSE 48KS/SEC
31
9.1.2
FREQUENCY RESPONSE 44.1KS/SEC
31
9.2 DIGITAL PLAYBACK FOR LINE OUTPUT FREQUENCY (32 OHM LOADING)
32
9.2.1
FREQUENCY RESPONSE 48KS/SEC
32
9.2.2
FREQUENCY RESPONSE 44.1KS/SEC
32
9.3 DIGITAL RECORDING FOR LINE OUTPUT FREQUENCY
33
9.3.1
FREQUENCY RESPONSE 48KS/SEC
33
9.3.2
FREQUENCY RESPONSE 44.1KS/SEC
33
10. APPLICATION CIRCUIT REFERENCE
34
Date: 08/Sep/2005
Version:
-3-
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
1.DESCRIPTIONS AND OVERVIEW
CM109 is a highly integrated single chip USB audio controller specifically for VoIP (Voice
over internet protocol) application. All essential analog modules are embedded in CM109,
including dual DAC and earphone driver, ADC, microphone booster, PLL, regulator, and
USB transceiver. 8 GPIO pins can constitute a 24 key matrix directly support keypad
control function without MCU. It’s also support buzzer output pin for VoIP application. In
addition, audio adjustment can be easily controlled via specific HID compliant volume
control pins. Many features are programmable with jumper pins or external EEPROM.
Vender can customized unique USB VID/PID to EEPROM for VoIP software authentication.
Moreover, individual unique phone number for each device is possible via serial number
stored in external EEPROM. Moreover, CM109 provided I2C interface with MCU
application for LCM integrated and advanced functions.
VoIP applications are becoming increasing popular as VoIP can provide free or low-cost
calling worldwide. To provide a VoIP experience that is the same as using a regular phone
and eliminate the poor call quality that results from using the PC audio, C-Media has
developed CM109 USB Controller that enables a regular phone, handset, or headset
which is interfaced to the USB port on the PC. With the C-Media OEMs can quickly bring
to market a family of low cost high quality VoIP products.
2. FEATURES
z
Compliant with USB 2.0 Full Speed Operation
z
Compliant with USB Audio Device class specification v1.0
z
Supports USB Suspend/Resume Mode and remote Wakeup with Volume Control
pins
z
Single 12MHz Crystal input with on-chip PLL and embedded USB transceiver
z
Jumper Pin for Speaker Mode (Playback Only) or Headset Mode (Playback +
Recording)
z
For Headset Mode, USB audio function topology has 2 Input Terminals, 2 Output
Terminals, 1 Mixer Unit, 1 Selector Unit, and 3 Feature Units
z
Jumper Pin for Operation System Mixer Unit Enable/Disable under Headset Mode
Date: 08/Sep/2005
Version:
-4-
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
z
For Speaker Mode, USB audio function topology has 1 Input Terminal, 1 Output
Terminal, and 1 Feature Unit
z
Support one Control Endpoint, one Isochroous out Endpoint, one Isochroous in
Endpoint, and one Interrupt in Endpoint
z
Alternate zero bandwidth setting for releasing playback bandwidth on USB Bus
when this device is inactive
z
Volume up, volume down, and playback mute support USB HID for Host Control
Synchronization
z
Record Mute Pin with LED Indicator for Record Mute Status
z
External EEPROM Interface for Vendor Specific USB VID, PID, and Serial
Number
z
Supports AES/EBU, IEC60958, S/PDIF Consumer Formats for Stereo PCM
Data at S/PDIF Output
z
8 GPIO Pins with Read/Write via HID
z
Embedded Buzzer Function controlled by Register
z
Support I2C Interface for External MCU Integrated
z
Jumper Pin for Output Voltage Swing (3.5V or 2.5V)
z
Jumper Pin for Power Mode Setting
z
Isochroous transfer uses Adaptive Mode with Internal PLL for Synchronization
z
48K/44.1KHz Sampling Rate for both Playback and Recording
z
Soft Mute Function
z
Embedded High Performance 16 bit audio DAC with Earphone Phone Buffer
z
Host side data loss noise reduction function
z
Embedded 16 bit ADC input with Microphone Boost
z
Embedded power on Reset Block
z
Embedded 5V to 3.3V regulator for single External 5V Operation
z
Compatible with Win98 SE / Win ME / Win 2000 / Win XP and Mac OS9 / OS X
without Additional Driver
z
48 Pin LQFP Package
z
Support Hardware SDK tool for third-party software or soft-phone development
Date: 08/Sep/2005
Version:
-5-
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
3. PIN DESCRIPTIONS
3.1 PIN ASSIGNMENT BY PIN NUMBER
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
Signal Name
SPDIFO
DW
DR
SK
CS
MUTER
PWRSEL
XI
XO
MODE
GPIO2
LEDO
Pin #
13
14
15
16
17
18
19
20
21
22
23
24
Signal Name
GPIO3
DVSS1
GPIO4
GPIO5
GPIO6
MUTEP
BUZZ
GPIO7
LEDR
GPIO8
TEST
AVSS1
Pin #
25
26
27
28
29
30
31
32
33
34
35
36
Signal Name
VBIAS
VREF
MICIN
VSEL
AVDD1
LOL
LOBS
LOR
AVSS2
AVDD2
DVDD
DVSS2
Pin #
37
38
39
40
41
42
43
44
45
46
47
48
Signal Name
REGV
MSEL
VOLUP
PDSW
USBDP
USBDM
GPIO1
SCLK
MINT
SDAT
MCLK
VOLDN
3.2 PIN-OUT DIAGRAM
Date: 08/Sep/2005
Version:
-6-
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
3.3 PIN SIGNAL DESCRIPTIONS
Pin #
Symbol
Type
Description
1
SPDIFO
DO, 8mA, SR
2
DW
DIO, 8mA,
PD, 5VT
3
DR
DO, 4mA, SR
USB Controller Data Writes to EEPROM Interface.
EEPROM Data Input.
4
SK
DO, 4mA, SR
EEPROM Interface Clock
5
CS
DO, 4mA, SR
EEPROM Interface Chip Select
6
MUTER
DI, ST, PU
7
PWRSEL
DI, ST
8
XI
DI
Input Pin for 12MHz Oscillator
9
XO
DO
Output Pin for 12MHz Oscillator
10
MODE
DI, ST
11
GPIO2
DIO, 8mA,
PD, 5VT
12
LEDO
DO, SR, 8mA
13
GPIO3
DIO, 8mA,
PD, 5VT
14
DVSS1
P
15
GPIO4
DIO, 8mA,
PD, 5VT
GPIO Pin
16
GPIO5
DIO, 8mA,
PD, 5VT
GPIO Pin
17
GPIO6
DIO, 8mA,
PD, 5VT
GPIO Pin
18
MUTEP
DI, ST, PU
Mute Playback (Edge Trigger with de-Bouncing)
19
BUZZ
DO, 8mA, SR
20
GPIO7
DIO, 8mA,
PD, 5VT
21
LEDR
DO, SR, 8mA
22
GPIO8
DIO, 8mA,
PD, 5VT
GPIO Pin
23
TEST
DI, ST, PD
Test Mode Select Pin; Pull Low for Normal Operation
24
AVSS1
P
SPDIF Output
USB Controller Data Read From EEPROM Interface.
EEPROM Data Output.
(100KHz)
Mute Recording (Edge Trigger with de-Bouncing)
H: Pull Up to 3.3V; L: Pull Down to Ground
Speaker Mode H:Self Power with 100mA;L:Bus Power with 500mA
Headset Mode H:Bus Power with 100mA;L:Bus Power with 500mA
H: Pull Up to 3.3V; L: Pull Down to Ground
L:Headset Mode: Playback & Recording
H:Speaker Mode: Playback Only
GPIO Pin
LED for Operation; Output H for Power On; Toggling for Data Transmit
GPIO Pin
Digital Grounding
Buzzer Output Pin
GPIO Pin
LED for Mute Recording Indicator; Output H when Recording is Muted
Analog Ground
Date: 08/Sep/2005
Version:
-7-
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
25
VBIAS
AO
Microphone Bias Voltage Supply (4.5V)
26
VREF
AO
Connecting to External Decoupling Capacitor for Embedded Bandgap
Circuit; 2.25V Output
27
MICIN
AI
Microphone Input
28
VSEL
AI
Line Out Voltage Swing Select
H: Pull Up to 5V, L: Pull Down to Ground
L: 2.5Vpp Output;H: 3.5Vpp Output
29
AVDD1
P
5V Analog Power for Analog Circuit
30
LOL
AO
Line Out Left Channel
31
LOBS
AO
DC 2.25V Output for Line Out Bias
32
LOR
AO
Line Out Right Channel
33
AVSS2
P
Analog Ground
34
AVDD2
P
5V Analog Power for Analog Circuit
35
DVDD
P
5V Power Supply to Internal Regulator
36
DVSS2
P
Digital Grounding
37
REGV
AO
3.3V Reference Output for Internal 5V Æ 3.3V Regulator
Mixer Enable Select
H: Pull Up to 3.3V, L: Pull Down to Ground
L: Without Mixer; H: With Mixer (With Default Mute)
USB Descriptors are changed accordingly
38
MSEL
DI, ST
39
VOLUP
DI, ST, PU
40
PDSW
DO, 4mA , OD
41
USBDP
AIO
USB Data D+
42
USBDM
AIO
USB Data D-
43
GPIO1
DIO, 8mA,
PD, 5VT
GPIO Pin
44
SCLK
DIO, 8mA,
PD, 5VT
External MCU Serial Bus Clock Pin
45
MINT
DO, 4mA, SR
46
SDAT
DIO, 8mA,
PD, 5VT
47
MCLK
DO, 4mA, SR
48
VOLDN
DI, ST, PU
Volume Up (Edge Trigger with de-Bouncing)
Power Down Switch Control (for PMOS Polarity)
0: Normal Mode, 1: Power Down Mode
External MCU Interrupt Pin
When Register Address 4 ~ 7 has new data, MINT is set Low; after
MCU read MINT is reset to H
External MCU Serial Bus Data Pin
External MCU Clock Pin, Clock Frequency is Programmable
Default is 1.5 MHz (Options Include, 6MHz, 3MHz, 1.5MHz)
Volume Down (Edge Trigger with de-Bouncing)
Date: 08/Sep/2005
Version:
-8-
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
Note: DI – Digital Input Pad, DO – Digital Output Pad, DIO – Digital bi-Directional Pad, AI/AO/AIO – Analog
Pad, SR Slew Rate Control, ST – Schmitt Trigger, PD/PU – Pull Down or Pull Up, 5VT – 5 Volt Tolerant
(3.3V Pad), OD – Open Drain
4. MCU INTERFACE
CM109 provides a serial MCU Interface for external MCU to access internal registers with
these registers access. MCU and host side software can have bi-directional
communication. This interface can keep flexibility for external module control and
integrate, such as LCD panel.
5. BLOCK DIAGRAM
VOLUP
VOLDN
MUTER LEDO MCU
MUTEP LEDR I/F GPIO BUZZ SPDIFO
PWRSEL
MODE
PDSW MSEL
REGV
reset
interface logics
5 -> 3.3
regulator
power on
reset
USB control
-
3.3V
VREF
CS
SK
DW
DR
USBDP
USBDM
+
LOBS
16 bit
DAC
USB
interface
EEPROM
interface
LOL
0 ~ -45dB
38 steps
ISO out
processing
16 bit
DAC
LOR
0 ~ -45dB
38 steps
USB
TRX
SRAM
+12 ~ -33 dB
32 steps
ISO in
processing
MICIN
16 bit ADC
+22.5 ~ 0 dB
16 steps
48 MHz
12 MHz
+20dB boost enable
PLL1
clock
gen
VREF
(2.25V)
bandgap
VREF
VBIAS
4.5V
Block Diagram Of CM109
Date: 08/Sep/2005
Version:
-9-
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
6. ORDERING INFORMATION
Model
Number
Package
Operating Ambient
Temperature
Supply Range
CM109
48-Pin LQFP
7mm×7mm×1.4mm (Plastic)
0 o C to +70 o C
DVdd = 5V, AVdd = 5V
Outline Dimensions
Dimensions shown in inches and (mm)
‹48-Lead Thin Plastic Quad Flatpack (LQFP)
Ordering Information Of CM109
Date: 08/Sep/2005
Version:
- 10 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
7. FUNCTION DESCRIPTIONS
7.1 USB Interface
CM109 integrates USB transceiver, PLL, and regulator so only a few passive
components are necessary for the USB interface connection. Default USB descriptors
are embedded in CM109; therefore no additional design effort is needed for a generic
USB operation. PID changes with the jumper pin setting so different setting have
different PID. For customized product, customer can attach a 93C46 EEPROM to
override the embedded VID, PID and provide addition serial number for each set.
CM109 automatically detects 93C46 existence and performs the overwrite function
during power up.
7.1.1 Device Descriptor
Value
(Hex)
12
01
0110
00
00
00
40
0d8c
0008 ~
000F
Offset
Field
Size
0
1
2
4
5
6
7
8
10
bLength
bDescriptorType
bcdUSB
bDeviceClass
bDeviceSubClass
bDeviceProtocol
bMaxPacketSize0
idVendor
idProduct
1
1
2
1
1
1
1
2
2
12
bcdDevice
2
0100
14
iManufacturer
1
01
15
iProduct
1
02
16
iSerialNumber
1
03
17
bNumConfigurations
1
01
Description
Total 18 Bytes
Device Descriptor
USB 1.1 compliant.
Endpoint zero Size = 64 bytes
Vendor ID
Product ID
Programmable by MSEL and
MODE pin
Device compliant to the Audio
Device Class specification
version 1.00
Index of string descriptor
describing manufacturer
Index of string descriptor
describing product
Index of string descriptor
describing the device’s serial
number
Configurations number = 1
Note: VID, PID, and serial number can be overridden by external EEPROM content
Date: 08/Sep/2005
Version:
- 11 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
7.1.2 Configuration Descriptor
Offset
Field
Size
0
1
2
bLength
bDescriptorType
wTotalLength
1
1
2
4
bNumInterfaces
1
5
6
7
8
bConfigurationValue
iConfiguration
bmAttributes
bMaxPower
1
1
1
2
Value
Description
(Hex)
09
Total 9 Bytes
02
Configuration Descriptor
Total length of data returned for
this configuration
Programmable by MSEL and
MODE pin
04 or 03 Number of interfaces supported
by this Configuration
(Decided by Speaker Mode and
Head Set mode):
0: control interface
1: ISO-OUT interface
2: ISO-IN interface (Option)
3: INT-IN(HID) interface
01
00
A0 or E0 Programmable by PWRSEL
32 or FA Maximum power consumption of
the USB
Programmable by MODE and
PWRSEL
7.1.3 Content Format for 93C46
670X
where X = bit 4, 3, 2, 1
bit 2 serial num ber enable control 1: enable 0: disable
bit 1 product string enable control 1: enable 0: disable
1W = 2B ytes
id code 2 bytes
V ID 2 bytes
address = 0
P ID 2 bytes
serial num ber
6 bytes
unused
Content Format for 93C46
Date: 08/Sep/2005
Version:
- 12 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
7.1.4 USB Audio Topology Diagram
USB O ut
IT
Speaker out
ID = 0 1
OT
ID = 0 6
M ix e r U n it
ID = 0 F
F e a tu re U n it
(v o lu m e ) (m u te )
F e a tu re U n it
ID = 0 9
(v o lu m e ) (m u te )
ID = 0 D
e n a b le o r d is a b le b y
M S E L p in
U S B IN
OT
M ic ro p h o n e In
ID = 0 7
IT
ID = 0 2
s e le c to r U n it
ID = 0 8
F e a tu re U n it
(v o lu m e ) (m u te )
ID = 0 A
USB Audio Topology Diagram
7.2 Jumper Pins and Mode Setting:
Several jumper pins can set the configuration of CM109. These jumper pin settings
affect both USB descriptors and USB audio topology. If MODE pin is pulled up to 3.3V
(speaker mode), a playback only function is activated and there is no recording function
declared to the host. At this setting, MSEL pin is ignored and only one input terminal,
one output terminal and one feature unit is declared in USB audio topology.
If MODE pin is pulled low (headset mode), a full duplex playback and recording function
is reported to the host. MSEL pin setting activates one mixer unit and one feature unit.
The following USB audio topology in Chapter: 7.1.4 is an example of headset mode.
PWRSEL pin affects the power configuration of CM109; together with MODE pin totally
4 combinations are programmable.
Date: 08/Sep/2005
Version:
- 13 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
MODE
Combinations
3.3V
GND
3.3V
Speaker Mode :
Playback Only
(Self Power with 100mA)
Headset Mode :
Playback + Recording
(Bus Power with 100mA)
GND
Speaker Mode :
Playback Only
(Bus Power with 500mA)
Headset Mode :
Playback + Recording
(Bus Power with 500mA)
PWRSEL
VSEL jumper pin sets the output voltage swing. When VSEL is connected to 5V,
output voltage swing is 3.5Vpp; when VSEL is connected to ground, output voltage
is 2.5Vpp.
7.3 HID Feature and Descriptions
HID feature is provided by CM109 so user setting to volume up, volume down, and
playback mute button pin is reported to the host to synchronize host side setting. In
addition, all CM109 internal registers can be accessed via HID function call.
USB protocols can configure devices at startup or when they are plugged in at run time.
These devices are broken into various device classes. Each device class defines the
common behavior and protocols for devices that serve similar functions. The HID
(Human Interface Device) class is one of the device classes.
The HID class consists primarily of devices that are used by humans to control the
operation of computer systems. Typical examples of HID class devices include:
- Keyboards and pointing devices, for example: mouse, trackballs, and joysticks.
- Front-panel controls, for example: knobs, switches, buttons, and sliders.
- Controls that might be found on devices such as VCR remote controls, games or
simulation devices, for example: data gloves, throttles, and steering wheels.
- Devices that may not require human interaction but provide data in a similar format
to HID class devices, for example: bar-code readers, thermometers, or voltmeters.
Date: 08/Sep/2005
Version:
- 14 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
7.3.1 HID Descriptor
HID Interface Descriptor
Offset
Field
Size
0
bLength
1
1
bDescriptorType
1
2
bInterfaceNumber
1
3
bAlternateSetting
1
Value (Hex)
09
04
03
00
4
bNumEndpoints
1
01
5
6
7
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
1
1
1
03
00
00
8
iInterface
1
00
HID Descriptor
Offset
Field
0
bLength
1
bDescriptorType
2
bcdHID
4
bCountryCode
5
bNumDescriptors
6
bDescriptorType
7
wDescriptorLength
Size
1
1
2
1
1
1
Value (Hex)
09
21
0100
00
01
22
2
0030
Description
Size of this descriptor: 9 byte
INTERFACE descriptor type
Number of Interface: 3
alternate 0
Number of endpoints used by this
Interface: 1
HID Interface Class
No Subclass
Must be set to 0
Index of a string descriptor that
describes this interface.
Description
Total 9 Bytes
HID Descriptor Type
HID class version 1.00
Report Descriptor
Numeric expression that is the total size
of the optional descriptor: 48 Bytes
Interrupt IN Endpoint Descriptor
Offset
Field
Size
Value (Hex)
Description
0
bLength
1
07
Total 7 Bytes
1
bDescriptorType
1
05
ENDPOINT Descriptor Type
IN Endpoint
2
bEndpointAddress
1
83
Endpoint number = 3
3
bmAttributes
1
03
Interrupt endpoint type
4
wMaxPacketSize
2
0004
Maximum packet size: 4 bytes
6
bInterval
1
20
32ms
Date: 08/Sep/2005
Version:
- 15 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
7.3.2 Windows Software Architecture for HID
Applications
C-Media SDK
Winmm.dll
User32.exe or User.exe
Direct Input
HID.dll
Reports
(device specification)
Audio Driver
Keyboard Class Driver
Joy Stick Class Driver
Mouse Class Driver
HID Class Driver(HIDCLASS.SYS)
Gameport MiniDriver(HIDGAME.SYS)
USB
Gameport
USB HUB Driver(USBHUB.SYS)
USB Class Driver(USBD.SYS)
PCI Enumerator
Note: Please contact with our sales for the C-Media SDK example if needed.
7.4 Internal Registers
All internal registers of CM109 can be accessed via generic HID functional calls without
the need to develop kernel mode driver. Totally 4 bytes of data can be read or write from
HID. Input report is for read and output report is for write. Internal registers of CM109 are
used to control GPIO, S/PDIF output, EEPROM and MCU data access. Host side HID or
external MCU can access CM109 internal registers. With both sides accessed to the
same set of registers, two-way communication can be achieved.
7.4.1 Access via HID Class Command:
HID_IR0 to HID_IR3 are HID input report and is use by host side receiving data to
CM109. HID_OR0 to HID_OR3 are HID output report and is used by host side sending
adta to CM109
HID interrupt will occur when HID_IR0-3 are updated by button status MCU (and GPI in
case HID_IR0[7:6] == 2’b00).
Date: 08/Sep/2005
Version:
- 16 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
HID_IR0 (HID input report byte 0)
Offset : 0x00
Bits
7-6
5-4
3
2
1
0
Read/Write
Description
R
When HID_OR0[7] == 1’b0:
HID_IR0-3 are programmed by MCU (and GPI)
0: HID_IR1 is used as GPI
1: HID_IR0-3 are used as generic HID registers
2: Values written to HID_IR0-3 are also mapped
to MCU_CTRL, EEPROM_DATA0-1,
EEPROM_CTRL
3: Reserved
R
When HID_OR0[7] == 1’b0:
Generic registers programmed by MCU
When HID_OR0[7] == 1’b1:
Mapped from MCU_CTRL[5:4]
R
0: No activity on Record-Mute button
1: Record-Mute button pressed then released
R
0: No activity on Playback-Mute button
1: Playback-Mute button pressed then released
R
0: Volume-Down button released
1: Volume-Down button pressed
R
0: Volume-Up button released
1: Volume-Up button pressed
Default
0x0
0x0
0x0
0x0
0x0
0x0
HID_IR1 (HID input report byte 1)
Offset : 0x01
Bits
7-0
Read/Write
Description
Default
R
When HID_OR0[7] == 1’b0:
0x00
GPI (when HID_IR0[7:6] == 2’b00); or Generic
registers programmed by MCU (otherwise)
When HID_OR0[7] == 1’b1:
Mapped from EEPROM_DATA0
HID_IR2 (HID input report byte 2)
Offset : 0x02
Bits
7-0
Read/Write
Description
R
When HID_OR0[7] == 1’b0:
Generic registers programmed by MCU
When HID_OR0[7] == 1’b1:
Mapped from EEPROM_DATA1
Date: 08/Sep/2005
Default
0x00
Version:
- 17 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
HID_IR3 (HID input report byte 3)
Offset : 0x03
Bits
7-0
Read/Write
Description
R
When HID_OR0[7] == 1’b0:
Generic registers programmed by MCU
When HID_OR0[7] == 1’b1:
Mapped from EEPROM_CTRL
Default
0x00
HID_OR0 (HID output report byte 0)
Offset : 0x04
Bits
7-6
5
4
3-0
Read/Write
Description
R/W
0: HID_OR1-2 are used for GPO; HID_OR0,
3 are used for buzzer and SPDIF
1: HID_OR0-3 are used as generic HID
registers
2: Values written to HID_OR0-3 are also
mapped to MCU_CTRL,
EEPROM_DATA0-1, EEPROM_CTRL (see
Note)
3: Reserved
R/W
When HID_OR0[7] == 1’b0:
0: Buzzer off
1: Buzzer on
When HID_OR0[7] == 1’b1:
Mapped to MCU_CTRL[5]
R/W
When HID_OR0[7] == 1’b0:
Valid bit in SPDIF frame
When HID_OR0[7] == 1’b1:
Mapped to MCU_CTRL[4]
R/W
When HID_OR0[7] == 1’b0:
First nibble of SPDIF status channel
When HID_OR0[7] == 1’b1:
Reserved
Default
0x0
0x0
0x0
0x0
Note : When EEPROM access is done, HID interrupt will occur. USB host can
get the result from interrupt pipe (endpoint 3).
Date: 08/Sep/2005
Version:
- 18 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
HID_OR1 (HID output report byte 1)
Offset : 0x05
Bits
7-0
Read/Write
Description
R/W
When HID_OR0[7:6] == 2’b00:
0: GPO drives L
1: GPO drives H
When HID_OR0[7:6] == 2’b01:
Generic HID registers
When HID_OR0[7:6] == 2’b1x:
Mapped to EEPROM__DATA0
Default
0x00
HID_OR2 (HID output report byte 2)
Offset : 0x06
Bits
7-0
Read/Write
Description
R/W
When HID_OR0[7:6] == 2’b00:
0: Set GPIO to input mode
1: Set GPIO to output mode
When HID_OR0[7:6] == 2’b01:
Generic HID registers
When HID_OR0[7:6] == 2’b1x:
Mapped to EEPROM_DATA1
Default
0x00
HID_OR3 (HID output report byte 3)
Offset : 0x07
Bits
7-0
Read/Write
Description
R/W
When HID_OR0[7] == 1’b0:
Category byte of SPDIF status channel
When HID_OR0[7] == 1’b1:
Mapped to EEPROM_CTRL
Default
0x00
Note: HID_OR3 is used for SPDIF when SPDIF_CONFIG[5] == 1’b0
7.4.2 Access via External Serial Interface by MCU:
External MCU can write data to HID_IR0 to HID_IR3 and read data from HID_OR0 to
HID_OR3. MINT will be active when HID_OR0-3 are updated by Set_Output_Report
HID class command, and will be cleared after HID_OR0-3 are read by MCU.
Date: 08/Sep/2005
Version:
- 19 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
HID_IR0 (HID input report byte 0)
Offset : 0x00
Bits
7-6
5
4
3
2
1
0
Read/Write
Description
R/W
0: HID_IR0-3 are not used by MCU
1: HID_IR0-3 are used as generic HID
registers
2: Values written to HID_IR0-3 are also
mapped to MCU_CTRL,
EEPROM_DATA0-1, EEPROM_CTRL (see
Note)
3: Reserved
R/W
When HID_IR0[7] == 1’b0:
0: Buzzer off
1: Buzzer on
When HID_IR0[7] == 1’b1:
Mapped to MCU_CTRL[5]
R/W
When HID_IR0[7] == 1’b0:
Generic HID register
When HID_IR0[7] == 1’b1:
Mapped to MCU_CTRL[4]
R
0: No activity on Record-Mute button
1: Record-Mute button pressed then released
R
0: No activity on Playback-Mute button
1: Playback-Mute button pressed then
released
R
0: Volume-Down button released
1: Volume-Down button pressed
R
0: Volume-Up button released
1: Volume-Up button pressed
Default
0x0
0x0
0x0
0x0
0x0
0x0
0x0
Note: When EEPROM access is done, MINT will be active. MCU should read
HID_OR0-3 to get the result, and then MINT will be cleared.
HID_IR1 (HID input report byte 1)
Offset : 0x01
Bits
7-0
Read/Write
Description
R/W
When HID_IR0[7] == 1’b0:
Generic HID registers
When HID_IR0[7] == 1’b1:
Mapped to EEPROM_DATA0
Date: 08/Sep/2005
Default
0x00
Version:
- 20 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
HID_IR2 (HID input report byte 2)
Offset : 0x02
Bits
7-0
Read/Write
Description
R/W
When HID_IR0[7] == 1’b0:
Generic HID registers
When HID_IR0[7] == 1’b1:
Mapped to EEPROM_DATA1
Default
0x00
HID_IR3 (HID input report byte 3)
Offset : 0x03
Bits
7-0
Read/Write
Description
R/W
When HID_IR0[7] == 1’b0:
Generic HID registers
When HID_IR0[7] == 1’b1:
Mapped to EEPROM_CTRL
Default
0x00
HID_OR0 (HID output report byte 0)
Offset : 0x04
Bits
7-6
5-4
3-0
Read/Write
Description
R
When HID_IR0[7] == 1’b0:
HID_OR0-3 are programmed by USB host
0: HID_OR1-2 are used for GPO
1: HID_OR0-3 are used as generic HID
registers
2: Values written to HID_OR0-3 are also
mapped to MCU_CTRL,
EEPROM_DATA0-1, EEPROM_CTRL
3: Reserved
When HID_IR0[7] == 1’b1:
Always 2’b11
R
When HID_IR0[7] == 1’b0:
Generic registers programmed by USB host
When HID_IR0[7] == 1’b1:
Mapped from MCU_CTRL[5:4]
R
When HID_IR0[7] == 1’b0:
Generic registers programmed by USB host
When HID_IR0[7] == 1’b1:
Always 4’h0
Date: 08/Sep/2005
Default
0x0
0x0
0x0
Version:
- 21 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
HID_OR1 (HID output report byte 1)
Offset : 0x05
Bits
7-0
Read/Write
Description
R
When HID_IR0[7] == 1’b0:
Generic registers programmed by USB host
When HID_IR0[7] == 1’b1:
Mapped from EEPROM_DATA0
Default
0x00
HID_OR2 (HID output report byte 2)
Offset : 0x06
Bits
7-0
Read/Write
Description
R
When HID_IR0[7] == 1’b0:
Generic registers programmed by USB host
When HID_IR0[7] == 1’b1:
Mapped from EEPROM_DATA1
Default
HID_OR3 (HID output report byte 3)
Offset : 0x07
Bits
7-0
7.4.3
Read/Write
Description
R
When HID_IR0[7] == 1’b0:
Generic registers programmed by USB host
When HID_IR0[7] == 1’b1:
Mapped from EEPROM_CTRL
Default
0x00
Indirect Accessed Registers:
MCU_CTRL (MCU control)
Offset : 0x08
Bits
7-6
5-4
3-0
Read/Write
Description
-Reserved
R/W
0: MCLK operating at 1.5MHz
1: MCLK operating at 3MHz
2: MCLK operating at 6MHz
3: Reserved
-Reserved
Date: 08/Sep/2005
Default
0x0
0x0
0x0
Version:
- 22 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
EEPROM_DATA0 (Low byte of EEPROM data)
Offset : 0x09
Bits
7-0
Read/Write
Description
R/W
Low byte of EEPROM data to be accessed
Default
0x00
EEPROM_DATA1 (High byte of EEPROM data)
Offset : 0x0a
Bits
7-0
Read/Write
Description
R/W
High byte of EEPROM data to be accessed
Default
0x00
EEPROM_CTRL (Serial EEPROM access control)
Offset : 0x0b
Bits
7
6
5-0
Read/Write
Description
R/W
When Register Read:
0: No EEPROM access pending
1: Last EEPROM access pending
When Register Write:
0: No action
1: Start EEPROM access (will clear to 0
automatically)
R/W
0: Read EEPROM
1: Write EEPROM
R/W
Address of serial EEPROM
Default
0x0
0x0
0x00
7.5 MCU Interface
On MCU serial interface, CM109 serves as a slave device with bit rate up to 400Kbps
(fast mode). MCU can read/write 3 bytes to CM109 device with a 2-bit register address.
Since host side and MCU can both access to all the internal registers, access contention
when both host and MCU try to access the same register should be avoided on
application. The 7-bit slave address of CM109 is assigned as 7’b0111000.
When a one-byte data is written by MCU, CM109 will transfer totally 4 bytes to the USB
host via an additional interrupt pipe. The sequence of the upward HID report is the
button status first (address 00), then register with address 01, then register with address
02, then register with address 03. The USB host will keep polling the upward HID
Date: 08/Sep/2005
Version:
- 23 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
report every 32mS. When there is any button pressed or released, or MCU data
coming, CM109 will transfer the 4 bytes of HID report to the USB host again.
CM109 can also transfer one byte MCU data from the USB host to its register. This is
accomplished by a ‘Set Output Report’ HID class request via default control pipe. MCU
can get this downward byte by interrupt or polling.
CM109 has one input pin ‘SCLK’ where it gets serial clock from MCU, and one
open-drain output pin ‘SDAT’ where it sends or receives serial signal to/from MCU. As
shown below, ‘SDAT’ should be stable when ‘SCLK’ is high, and can have transition only
when ‘SCLK’ is low.
START and STOP conditions shown below are the exception. Every transaction
begins from a START, and ends with a STOP, or another START (repeated START).
Date: 08/Sep/2005
Version:
- 24 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
The figure below demonstrates a typical transaction. After every 8 bits sent by the
transmitter, the receiver should send one bit low for positive acknowledgement or one bit
high for negative acknowledgement. After the negative acknowledgement, a STOP or
repeated START should follow. The next figure shows more detailed about
acknowledgement bit. Note that ‘SCLK’ is always driven by the master.
P
SDAT
Acknowledgement
Signal from Receiver
MSB
Acknowledgment
Signal from Receiver
SCLK
S
or
Sr
1
2
7
8
1
9
2
ACK
3-8
9
ACK
START or Repeated
START Condition
Sr
Sr
or
P
STOP or Repeated
START Condition
Data Transfer on the MCU Interface
The figure below shows a complete data transfer. After a START, MCU should send
7-bit slave address (7’b0111000) first, and then the 8th bit denotes a read transfer when
it’s high; or a write transfer when it’s low. The first acknowledgement is always from
CM109.
Date: 08/Sep/2005
Version:
- 25 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
In the write transfer, MCU keep acting as the master and the transfer direction is not
changed. The following figure gives an example of one byte write transfer.
CM109 regards the first DATA byte as the register address. The second DATA byte is
the content that MCU writes at the register address. If there is the third DATA byte,
CM109 will auto-increment this byte to the next register address.
The figure below shows an example of two bytes read transfer. Because CM109 has
auto-increment function, the second DATA byte will be the register data on the next
address.
Please note that the USB host tries to get new HID data every 32mS. It’s quite slow.
If the continuous write transfers are too close in time, the former transfer may have no
effect.
Date: 08/Sep/2005
Version:
- 26 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
The figure below shows typical transactions between MCU and CM109. After a
START, MCU should send 7-bit slave address (0111000) first, and then the 8th bit
denotes a read transfer when it’s high; or a write transfer when it’s low.
MCU write:
S
0x70
0
0x00
MCU read:
S
0x70
S
0x71
0
0
0x04 0
Byte 0 0
0
Byte 0 0
Byte 1 0
Byte 1 0
Byte 2 0
From CM109 to MCU
Byte 2 0
Byte 3 1
Byte 3
P
P
From MCU to CM109
S
START condition
P
STOP condition
0
Positive acknowledge
1
Negative acknowledge
Byte n
0
One byte data (address n)
In a write transfer, MCU keeps acting as the transmitter. CM109 regards the first
DATA byte as start register address (it’s better to be 0x00). The following four DATA
bytes are the content that MCU writes to the register addresses. In a read transfer,
two transactions are necessary. MCU resets start register address by the first
transaction. Then MCU changes to be the receiver during the second transaction to
get four bytes of data.
Note 1: Bits 0~3 of the first HID byte always reflect button activity, so they can not be
written by MCU.
Date: 08/Sep/2005
Version:
- 27 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
7.6 Buzzer Output
Each time the software set "1" to the register HID-OR0 bit 5, an embedded ringing
sequence is played once. Since the delay between one sequence and next sequence
is long (around 1 second ~ 2 second), this delay to be set by software, H/W only play
one sequence and then stop for one register write.
ringing phase content
0.025 sec
0.025 sec
0.025 sec
0.025 sec
0.025 sec
0.025 sec
0.025 sec
5KHz
300Hz
5KHz
300Hz
5KHz
300Hz
5KHz
0.2 sec
0.1 sec
0.2 sec
0.4 sec
0.2 sec
0.1 sec
0.2 sec
ringing
silent
ringing
silent
ringing
silent
ringing
Date: 08/Sep/2005
0.025 sec
300Hz
silent & wait next trigger
Version:
- 28 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
8. ELECTRICAL CHARACTERISTICS
8.1 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
Tstg
Storage Temperature Range
-40 to +125
ESD (HBM)
ESD Human Body Mode
3500
V
ESD (MM)
ESD Machine Mode
200
V
0
C
8.2 Operation Conditions
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
-
-
TBD
Suspend Mode Power Consumption
-
320
-
Operating ambient temperature
0
-
70
Date: 08/Sep/2005
uA
0
C
Version:
- 29 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
8.3 Electrical Parameters
Min
Typ
DAC (10K Ohm Loading)
Resolution
16
THD + N (-3dBr)
-74.29
SNR
93.6
Silent SNR
98.2
Dynamic range
93.8
Frequency response 48KHz
20
Frequency Response 44.1KHz
20
Output Boltage (rms)
1.25
Output Voltage Swing
0.5
DAC (32 Ohm Loading)
Resolution
16
THD + N (-3dBr)
-71.1
SNR
93.7
Silent SNR
98.2
Dynamic Range
93.8
Frequency Response 48KHz
20
Frequency Response 44.1KHz
20
Output Voltage (rms)
1.25
Output Voltage Swing
0.5
ADC
Resolution
16
THD + N (-3dBr)
-76.1
SNR
83.1
Dynamic Range
81.6
Frequency Response 48KHz
20
Frequency Response 44.1KHz
20
Input Range
0
Amplification
Volume Control Level
-45
Volume Control Step
38
Microphone Input
Boost Gain
+20
Gain Adjustment Range
0
Gain Adjustment Steps
16
Mixer Gain Adjustment
-33.0
Mixer Gain Adjustment Steps
32
Date: 08/Sep/2005
Max
Unit
20K
20K
4.0
Bits
dB
dB
dB
dB
Hz
Hz
Vrms
V
20K
20K
4.0
Bits
dB
dB
dB
dB
Hz
Vrms
V
19.2
17.6
2.88
bit
dB
dB
dB
Hz
Hz
Vpp
0
-
dB
Steps
22.5
12.0
-
dB
dB
Steps
dB
Steps
Version:
- 30 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
9. FREQUENCY RESPONSE GRAPHS
9.1 Digital Playback for Line Output Frequency (10K Ohm Loading)
9.1.1 Frequency Response 48Ks/Sec (10K Ohm Loading)
C -m e d ia
D ig ital P layb ac k (P C -D -A ) f o r L ine O utp ut F re q ue nc y
R e s p o ns e
0 7 /1 5 /0 3 1 9 :0 3 :1 4
+1
+0
d
B
r
-1
-2
-3
A
-4
-5
-6
30
50
100
200
500
1k
2k
5k
10k
Hz
C o lo r
L in e S tyle
Th ic k
D a ta
Axis
G re e n
Ye llo w
S o lid
S o lid
2
2
Fa s tte s t.C h .1 Am p l!N o rm a lize
Fa s tte s t.C h .2 Am p l!N o rm a lize
L e ft
L e ft
W L -Mu ltito n e -4 8 k .a t2
9.1.2 Frequency Response 44.1Ks/Sec (10K Ohm Loading)
C -m e d ia
D ig ital P layb ac k (P C -D -A ) fo r L ine O utp ut F re q ue nc y
R e s p o ns e
0 7 /1 5 /0 3 1 9 :0 5 :4 0
+1
+0
d
B
r
-1
-2
-3
A
-4
-5
-6
20
50
100
200
500
1k
2k
5k
10k
Hz
C o lo r
L in e S tyle
Th ick
D a ta
Axis
G re e n
Ye llo w
S o lid
S o lid
2
2
Fa s tte s t.C h .1 Am p l!N o rm a lize
Fa s tte s t.C h .2 Am p l!N o rm a lize
L e ft
L e ft
W L -Mu ltito n e -4 4 k .a t2
Date: 08/Sep/2005
Version:
- 31 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
9.2 Digital Playback for Line Output Frequency (32 Ohm Loading)
9.2.1 Frequency Response 48Ks/Sec (32 Ohm Loading)
C -m e d ia
D ig ital R e c o rd ing (A -D -P C ) fo r L ine Inp ut F re q ue nc y R e s p o ns e
+1
+0
d
B
r
-1
-2
-3
1
-4
-5
-6
20
50
100
200
500
1k
2k
5k
10k
Hz
C o lo r
L in e S tyle
Th ick
D a ta
Axis
C ya n
Ye llo w
S o lid
S o lid
2
2
Fa s tte s t.C h .1 Am p l!N o rm a lize
Fa s tte s t.C h .2 Am p l!N o rm a lize
L e ft
L e ft
L W -MFre q R e s p -4 8 K .a t2
9.2.2 Frequency Response 44.1Ks/Sec (32 Ohm Loading)
C -m e d ia
D ig ital R e c o rd ing (A -D -P C ) fo r L ine Inp ut F re q ue nc y R e s p o ns e
+1
+0
-1
d
B
-2
-3
-4
-5
-6
20
50
100
200
500
1k
2k
5k
10k
Hz
C o lo r
L in e S tyle
Th ick
D a ta
Axis
G re e n
Ye llo w
S o lid
S o lid
2
2
Fa s tte s t.C h .1 Am p l!N o rm a lize
Fa s tte s t.C h .2 Am p l!N o rm a lize
L e ft
L e ft
L W -MFre q R e s p -4 4 K .a t2
Date: 08/Sep/2005
Version:
- 32 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
9.3 Digital Recording for Line Output Frequency
9.3.1 Frequency Response 48Ks/Sec
C -ME D IA
D igital P layb ack (P C -D -A ) fo r Line O utp ut F reque ncy
R e sp onse
0 7 /2 1 /0 3 1 4 :2 7 :2 9
+1
+0
d
B
r
-1
-2
-3
A
-4
-5
-6
30
50
100
200
500
1k
2k
5k
10k
Hz
Sw e e p
Tra ce
C o lo r
L in e Style
Th ick
D a ta
Axis
1
1
1
2
C ya n
Ye llo w
So lid
So lid
2
2
Fa s tte s t.C h .1 Am p l!N o rm a lize
Fa s tte s t.C h .2 Am p l!N o rm a lize
L e ft
L e ft
C om m ent
WL -Mu ltito n e -4 8 k.a t2 c
9.3.2 Frequency Response 44.1Ks/Sec
C -ME D IA
D ig ital P layb ac k (P C -D -A ) fo r L ine O utp ut F re q ue nc y
R e sponse
0 7 /2 1/0 3 1 5 :1 6:5 5
+1
+0
d
B
r
-1
-2
-3
A
-4
-5
-6
20
50
100
200
500
1k
2k
5k
10k
Hz
Sw e e p
Tra ce
C o lo r
L in e Style
Th ick
D a ta
Axis
1
1
1
2
C ya n
Ye llo w
So lid
So lid
2
2
Fa s tte s t.C h.1 Am p l!N o rm a lize
Fa s tte s t.C h.2 Am p l!N o rm a lize
L e ft
L e ft
Com m ent
WL -Mu ltito n e -4 4 k.a t2 c
Date: 08/Sep/2005
Version:
- 33 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
10. APPLICATION CIRCUIT REFERENCE
Date: 08/Sep/2005
Version:
- 34 -
1.3a
CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
REFERENCE
USB-IF, USB Specification, Revision 1.1 and 2.0, and USB Audio Device Class Specification,
Revision 1.0,.
-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: 08/Sep/2005
Version:
- 35 -
1.3a