CM108AH A High Integrated USB Audio I/O Controller DESCRIPTION FEATURES CM108AH is a highly integrated single chip USB Compliant with USB 2.0 Full Speed Operation audio solution. All essential analog modules are Compliant with USB Audio Device Class Specification v1.0 regulator, and USB transceiver. It is very suitable for USB headset, USB earphone or USB audio Supports USB Suspend / Resume Mode and 81 Remote Wakeup with Volume Control Pins Single 12MHz Crystal Input with On-chip PLL and 44 51 earphone driver, ADC, microphone booster, PLL, 9 embedded in CM108AH, including dual DAC and Embedded USB Transceiver programmable with jumper pins or external Jumper Pin for Speaker Mode (Playback Only) or ： 71 interface box application. Many features are Headset Mode (Playback + Recording) In addition, audio adjustment can be easily QQ EEPROM. For Headset Mode, USB Audio Function Topology has 2 Input Terminals, 2 Output Terminals, 1 control pins. For value added application, external Mixer Unit, 1 Selector Unit, and 3 Feature Units Jumper Pin for Mixer Unit Enable / Disable under Headset Mode 18 66 via I2S pin for further processing. 43 41 5 codec or audio DSP can be connected to CM108AH 85 ， controlled via specific HID compliant volume 深 圳 市 金 合 讯 科 技 有 限 公 司 ， BLOCK DIAGRAM www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 1/27 CM108AH A High Integrated USB Audio I/O Controller TABLE OF CONTENTS 9 81 3.2 Pin-Out Diagram ................................................................................................ 5 3.3 Pin Signal Descriptions ......................................................................................... 6 71 43 41 5 USB Interface...................................................................................................11 Device Descriptor................................................................................................ 11 7.1.2 Configuration Descriptor ....................................................................................... 12 7.1.3 Content Format for EEPROM (93C46)......................................................................... 13 7.1.4 USB Audio Topology Diagram .................................................................................. 14 ， 18 66 7.1.1 Jumper Pins and Mode Setting:..............................................................................15 7.3 HID Feature .....................................................................................................16 公 司 7.2 What’s HID ........................................................................................................ 16 7.3.2 HID Descriptor ................................................................................................... 17 7.3.3 Windows Software Architecture for HID ..................................................................... 18 限 7.3.1 技 有 7.4 Internal Registers ..............................................................................................19 Electrical Characteristics..................................................................... 22 8.1 Absolute Maximum Rating ....................................................................................22 8.2 Operation Conditions..........................................................................................22 8.3 Electrical Parameters .........................................................................................23 市 金 圳 Audio Quality Graphs.......................................................................... 24 深 9 85 ， QQ ： I²S Interface ..................................................................................... 8 Block Diagram ................................................................................... 9 Ordering Information.......................................................................... 10 Function Description .......................................................................... 11 7.1 8 51 Pin Assignment by Pin Number................................................................................ 5 44 3.1 讯 科 4 5 6 7 Description and Overview ..................................................................... 3 Features .......................................................................................... 3 Pin Descriptions ................................................................................. 5 合 1 2 3 9.1 Line Out Freq Response @ 48KHz Sample Rate (10K Ohm Loading) ...................................24 9.2 Line Out THD+N @ 48KHz sample rate (10K Ohm Loading) .............................................24 9.3 Microphone Input Freq Response @ 48KHz Sample Rate ................................................25 9.4 Microphone Input THD+N @ 48KHz Sample Rate ..........................................................25 Reference ............................................................................................ 26 www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 2/27 CM108AH A High Integrated USB Audio I/O Controller 1 Description and Overview CM108AH is a highly integrated single chip USB audio solution. All essential analog modules are embedded in CM108AH, including dual DAC and earphone driver, ADC, microphone booster, PLL, regulator, and USB transceiver. It is very suitable for USB headset, USB earphone or USB audio interface box application. Many 9 features are programmable with jumper pins or external EEPROM. 81 In addition, audio adjustment can be easily controlled via specific HID compliant volume control pins. For value 51 added application, external codec or audio DSP can be connected to CM108AH via I2S pin for further processing. 44 3 GPIO pins can be accessed with customer application software for additional value added application. Also Features QQ 2 ： 71 CM108AH support a standard HID button for HOOK/OFF_HOOK function, this can be used for VOIP applications. Compliant with USB 2.0 Full Speed Operation Compliant with USB Audio Device Class Specification v1.0 Supports USB Suspend / Resume Mode and Remote Wakeup with Volume Control Pins Single 12MHz Crystal Input with On-chip PLL and Embedded USB Transceiver Jumper Pin for Speaker Mode (Playback Only) or Headset Mode (Playback + Recording) For Headset Mode, USB Audio Function Topology has 2 Input Terminals, 2 Output Terminals, 1 Mixer Unit, 1 18 66 43 41 5 85 ， Selector Unit, and 3 Feature Units Jumper Pin for Mixer Unit Enable / Disable under Headset Mode For Speaker Mode, USB Audio Function Topology has 1 Input Terminal, 1 Output Terminal, and 1 Feature 公 司 ， Support One Control Endpoint, One Isochronous Out Endpoint, One Isochronous In Endpoint, and One Interrupt In Endpoint 技 有 限 Unit Alternate Zero Bandwidth Setting for Releasing Playback Bandwidth on USB Bus when this Device is Inactive Supports AES/EBU, IEC60958, S/PDIF Consumer Formats for Stereo PCM Data at S/PDIF Output Volume Up, Volume Down, and Playback Mute Pins support USB HID device class for Host Control 合 讯 科 市 金 Synchronization HOOK / OFF_HOOK Pin support USB HID device class for VOIP Applications Record Mute Pin with LED Indicator for Record Mute Status 圳 EEPROM Write Function via Vendor Specific request for Mass Production Convenience Customized Embedded VID, PID, Product String, Manufacture String and Volume Settings by Customer 深 External EEPROM Interface for Vendor Specific USB VID, PID, and Serial Number Request 3 GPIO Pins with Read/Write via HID Interface Jumper Pin to Set the Power Mode (100mA or 500mA, Bus Power or Self Power) Isochronous Transfer uses Adaptive Mode with Internal PLL for Synchronization www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 3/27 CM108AH A High Integrated USB Audio I/O Controller 48K / 44.1KHz Sampling Rate for Both Playback and Recording Soft Mute Function Embedded High Performance 16-Bit Audio DAC with Earphone Phone Amplifier Host Side Data Loss Noise Reduction Function Embedded 16-Bit ADC Input with Microphone Boost Embedded Power-On-Reset Block Embedded 5V to 3.3V Regulator for Single External 5V Operation Compatible with Win 2K / Win XP / Vista / 7, Linux, and Mac OS X without Additional Driver (WinCE / Win 44 51 81 9 48 Pin LQFP Package 深 圳 市 金 合 讯 科 技 有 限 公 司 ， 18 66 43 41 5 85 ， QQ ： 71 Mobile supported with C-Media’s own Driver) www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 4/27 CM108AH A High Integrated USB Audio I/O Controller Pin Descriptions Pin # Signal Name Pin # Signal Name Pin # Signal Name SPDIFO 13 GPIO3 25 VBIAS 37 REGV DI 14 DVSS1 26 VREF 38 MSEL DO 15 GPIO4 27 MICIN 39 9 Pin Assignment by Pin Number Signal Name 1 2 3 SK 16 SDIN 28 N.C. 40 5 CS 17 ADSCLS 29 AVDD1 41 6 MUTER 18 MUTEP 30 LOL 42 7 PWRSEL 19 ADLRCK 31 LOBS ADMCLK 32 LOR 21 LEDR 33 AVSS2 71 20 XO ： XI 9 43 QQ 8 PDSW 44 4 VOLUP 81 Pin # 51 3.1 USBDP USBDM GPIO1 44 SDOUT 45 DAMCLK MODE 22 ADSEL 34 AVDD2 46 DALRCK 11 HOOK 23 TEST 35 DVDD 47 DASCLK 12 LEDO 24 AVSS1 36 DVSS2 48 VOLDN SK REGV 43 41 5 PDSW VOLUP USBDP GPIO1 USBDM SDOUT DALRCK MSEL DVSS2 DVDD AVDD2 AVSS2 LOR 公 CS 37 司 DO 18 66 1 DI ， SPDIFO DAMCLK Pin-Out Diagram VOLDN 3.2 85 ， 10 DASCLK 3 MUTER LOBS LOL 限 PWRSEL XI AVDD1 CM108AH HOOK N.C. MICIN VREF LEDO 25 AVSS1 TEST ADSEL LEDR ADMCLK ADLRCK MUTEP ADSCLK SDIN GPIO4 DVSS1 GPIO3 13 Pin Assignments (Top View) 深 圳 市 金 合 讯 科 技 有 XO MODE www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 5/27 VBIAS CM108AH A High Integrated USB Audio I/O Controller Pin Signal Descriptions SPDIFO 2 DI 3 4 5 6 DO SK CS MUTER DO, 8mA, SR DIO, 8mA, PD, 5VT DO, 4mA, SR DO, 4mA, SR DO, 4mA, SR DI, ST, PU 7 PWRSEL DI, ST 8 9 XI XO DI DO 10 MODE DI, ST 11 HOOK DI, ST, PU 12 LEDO DO, SR, 8mA 13 GPIO3 14 DVSS1 15 GPIO4 16 SDIN 17 18 19 ADSCLK MUTEP ADLRCK DIO, 8mA, PD, 5VT P DIO, 8mA, PD, 5VT DIO, 8mA, PD, 5VT DIO, 4mA, SR DI, ST, PU DO, 4mA, SR 20 ADMCLK DIO, 4mA, SR SPDIF Output EEPROM Interface Data read from EEPROM EEPROM Interface Data write to EEPROM EEPROM Interface Clock EEPROM Interface Chip Select Mute Recording (Edge Trigger with de-Bouncing) Chip Power Select Pin, worked with MODE Pin 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 ) Input Pin for 12MHz Oscillator Output Pin for 12MHz Oscillator Operating mode select H：Speaker Mode - Playback Only L：Headset Mode - Playback & Recording ( H: Pull Up to 3.3V; L: Pull Down to Ground ) Hook / Off_Hook Pin (Edge Trigger with de-Bouncing) LED for Operation; Output H for Power On; Toggling for Data Transmit 9 1 71 ： QQ 85 ， 43 41 5 GPIO Pin 公 司 ， Digital Ground GPIO Pin ADC I2S Data Input DI, ST, PD 23 TEST DI, ST, PD 24 25 AVSS1 VBIAS P AO 26 VREF AO 27 28 29 30 31 MICIN N.C. AVDD1 LOL LOBS AI P AO AO 5V Analog Power for Analog Circuit Line Out Left Channel DC 2.25V Output for Line Out Bias 技 有 讯 科 合 LEDR 圳 市 金 22 限 ADSEL ADC I2S Serial Clock Mute Playback (Edge Trigger with de-Bouncing) ADC I2S Left / Right Clock 11.2896MHz Output for 44.1KHz Sampled Data and 12.288MHz Output for 48KHz Sampled Data LED for Mute Recording Indicator; Output H when Recording is Muted ADC Input Source Select Pin H: Use external (via I2S) ADC L: Use internal ADC ( H: Pull Up to 3.3V; L: Pull Down to Ground ) Test Mode Select Pin; H: Test Mode L: Normal Operation ( H: Pull Up to 3.3V; L: Pull Down to Ground ) Analog Ground Microphone Bias Voltage Supply (4.5V), with a small Driving Capability Connecting to External Decoupling Capacitor for Embedded Bandgap Circuit; 2.25V Output Microphone Input 21 深 Description 81 Type 51 Symbol 44 Pin # 18 66 3.3 DO, SR, 8mA www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 6/27 CM108AH LOR AVSS2 AVDD2 DVDD DVSS2 REGV AO P P P P AO 38 MSEL DI, ST 39 VOLUP DI, ST, PU 40 PDSW DO, 4mA , OD 41 42 USBDP USBDM 43 GPIO1 44 SDOUT AIO AIO DIO, 8mA, PD, 5VT DO, 4mA, SR 45 DAMCLK DO, 4mA, SR 46 47 48 DALRCK DASCLK VOLDN DO, 4mA, SR DO, 4mA, SR DI, ST, PU Line Out Right Channel Analog Ground 5V Power Supply for Analog Circuit 5V Power Supply for Internal Regulator Digital Ground 3.3V Reference Output for Internal 5V Æ 3.3V Regulator Mixer Enable Select, worked with MODE pin H: With Mixer / AA-Path Enable (With Default Mute) L: Without Mixer / AA-Path Disable ( H: Pull Up to 3.3V, L: Pull Down to Ground ) USB Descriptors will also be changed accordingly Volume Up (Edge Trigger with de-Bouncing) Power Down Switch Control Signal (for PMOS Polarity) 0: Normal Operation, 1: Power Down Mode (Suspend Mode) USB Data D+ USB Data D- QQ ： 71 44 51 81 32 33 34 35 36 37 GPIO Pin 18 66 43 41 5 85 ， DAC I2S Data Output 11.2896 MHz Output for 44.1KHz Sampled Data and 12.288 MHz Output for 48KHz Sampled Data DAC I2S Left/Right Clock DAC I2S Serial Clock Volume Down (Edge Trigger with de-Bouncing) Note : DI / DO / DIO – Digital Input / Output / Bi-Directional Pad AI / AO / AIO – Analog Input / Output / Bi-Directional Pad SR – Slew Rate Control ST – Schmitt Trigger PD / PU – Pull Down / Pull Up 5VT – 5 Volt Tolerant (3.3V Pad) OD – Open Drain 深 圳 市 金 合 讯 科 技 有 限 公 司 ， U www.cmedia.com.tw Copyright © C-Media Electronics Inc. 9 A High Integrated USB Audio I/O Controller Rev. 1.7︱ Page 7/27 CM108AH A High Integrated USB Audio I/O Controller 4 I²S Interface CM108AH provide I 2 S interface for both playback and recording. External ADC, DAC, or DSP can be added to P P provide additional function in the USB audio system. CM108AH sends out the master clock (fixed at x256), LRCK (fixed at x64), and data clock. Therefore external ADC, DAC, or DSP should be set at slave mode for I 2 S P P P P P 81 P 9 interface. Left channel of I 2 S bus is used for CM108AH mono recording. Both I 2 S buses use 5V tolerant pad so bus. Recording source (from ADC or from I 2 S bus) can be selected by ADSEL jumper pin. P 44 P 71 R ight C hannel Left C hannel SDATA -1 -2 +2 +1 LS B M SB -1 -2 +2 +1 LSB 深 圳 市 金 合 讯 科 技 有 限 公 司 ， 18 66 43 41 5 85 ， M SB QQ ： LR C K S C LK www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 8/27 51 they can be easily interfacing with 5V or 3.3V devices. Playback data is simultaneously sent to both DAC and I 2 S P P CM108AH A High Integrated USB Audio I/O Controller Block Diagram ， 18 66 43 41 5 85 ， QQ ： 71 44 51 81 9 5 深 圳 市 金 合 讯 科 技 有 限 公 司 Block Diagram Of CM108AH www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 9/27 CM108AH A High Integrated USB Audio I/O Controller Ordering Information Operating Ambient Model Number Package CM108AH 48-Pin LQFP 7mm×7mm×1.4mm (Plastic) DVdd = 5V, AVdd = 5V -15°C to +70°C *Dimensions shown in inches and (mm) 71 44 51 81 Outline Dimensions Supply Range Temperature 9 6 Ordering Information Of CM108AH 深 圳 市 金 合 讯 科 技 有 限 公 司 ， 18 66 43 41 5 85 ， QQ ： 48-Lead Thin Plastic Quad Flatpack (LQFP) www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 10/27 CM108AH A High Integrated USB Audio I/O Controller 7 Function Description 7.1 USB Interface CM108AH 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 CM108AH; therefore no additional 9 design effort is needed for USB operation. PID will be changed with the MODE pin setting, so different setting 81 will have different PID. For customized product, customers can attach a 93C46 EEPROM to override the 51 embedded VID, PID, Product String, Manufacture String, and serial number for each set. CM108AH will 71 44 automatically detect the 93C46 existence and performs the overwrite function during power up. Field Size Value Description QQ Offset ： 7.1.1 Device Descriptor 85 ， (Hex) bLength 1 12 Total 18 Bytes 1 bDescriptorType 1 01 Device Descriptor 2 bcdUSB 2 0110 4 bDeviceClass 1 00 5 bDeviceSubClass 1 6 bDeviceProtocol 1 7 bMaxPacketSize0 1 8 idVendor 10 idProduct 12 bcdDevice 43 41 5 0 18 66 USB 1.1 compliant. 00 司 ， 00 40 Endpoint zero Size = 64 bytes 0d8c 2 0139 2 0100 iManufacturer 1 01 Index of string descriptor describing manufacturer iProduct 1 02 Index of string descriptor describing product 16 iSerialNumber 1 03 17 bNumConfigurations 1 01 限 技 有 讯 科 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 the device’s serial number Configurations number = 1 深 圳 市 金 合 14 15 公 2 www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 11/27 CM108AH A High Integrated USB Audio I/O Controller 7.1.2 Configuration Descriptor Offset Field Size 0 1 bLength bDescriptorType wTotalLength 1 1 Description (Hex) 09 02 9 2 Total 9 Bytes Configuration Descriptor Total length of data returned for this configuration. Programmable by MSEL and MODE pin Number of interfaces supported by this Configuration, Changed by MODE pin. EP0: Control Interface EP1: ISO-OUT Interface EP2: ISO-IN Interface (Optional) EP3: INT-IN (HID) Interface 04 or 03 1 1 1 01 00 A0 or E0 2 32 or FA QQ Programmable by PWRSEL Maximum power consumption of the USB. Programmable by MODE and PWRSEL Pin 深 圳 市 金 合 讯 科 技 有 限 公 司 ， 18 66 43 41 5 8 bConfigurationValue iConfiguration bmAttributes bMaxPower 85 ， 5 6 7 ： 71 1 44 bNumInterfaces 4 51 81 2 Value www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 12/27 CM108AH A High Integrated USB Audio I/O Controller 7.1.3 Content Format for EEPROM (93C46) Addr (Dec) (Hex) 0x00 Magic Word 0x670X where X = bit 4, 3, 2, 1 bit 3 The value within address 0x2A,0x2B is valid 1: valid 0: invalid bit 2 manufacture string enable 1: enable(default) 0: disable bit 1 serial number enable control 1: enable 0: disable(default) bit 0 product string enable control 1: enable(default) 0: disable PID 2-byte Serial number length (low byte) 4 ~ 9 0x04 ~ 0x09 Serial number 12-byte 10 0x0A Product string length (low byte) 11 ~ 25 0x0B ~ 0x19 Product string 30-byte (default: USB PnP Sound Device) 26 0x1A Manufacture string length (low byte) 27 ~ 41 0x1B ~ 0x29 Manufacture string 30-byte (default: C-Media Electronics Inc.) 42 0x2A 44 ~ END 0x2C ~ END QQ 85 ， 43 41 5 Manufacture string 1st (high byte) ， 18 66 限 bit 15 ~ bit 9 bit 8 bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 Product string 1st byte (high byte) DAC initial volume (7-bit) max:0x02 ADC initial volume (5-bit) max: 0x00 司 公 bit 15 ~ 8 bit 7 ~ 0 技 有 讯 科 合 0x2B ： 0x03 市 金 圳 Serial number 1st byte (high byte) 3 43 深 44 0x02 2 VID 2-byte 71 0x01 1 51 81 0 Description 9 Addr <reserved> Shutdown DAC analog 1:shutdown 0:active(default) Total Power Control 1:enable 0:disable(default) Reserved, should be 0 MIC High Pass Filter 1:enable(default) 0:disable ADC synchronization mode 1:enable 0:disable(default) MIC BOOST 1:enable(default) 0:disable DAC Output Terminal property set to SPK or HP 1: Headset 0: Speaker(default) HID 1: enable (default) 0: disable Remote Wakeup enable/disable 1: enable 0: disable(default) <reserved> www.cmedia.com.tw Copyright © C-Media Electronics Inc. min:0x4a min:0x78 Rev. 1.7︱ Page 13/27 CM108AH A High Integrated USB Audio I/O Controller 7.1.4 USB Audio Topology Diagram USB Out IT Speaker out ID = 01 OT 9 ID = 06 81 Feature Unit Mixer Unit ID = 0F 51 (volume) (mute) Feature Unit ID = 09 ID = 0D 44 (volume) (mute) 85 ， QQ ： 71 enable or disable by MSEL pin 43 41 5 Microphone In IT selector Unit ID=02 ID = 08 18 66 Feature Unit (volume) (mute) 深 圳 市 金 合 讯 科 技 有 限 公 司 ， ID= 0A www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 14/27 USB IN OT ID = 07 CM108AH A High Integrated USB Audio I/O Controller 7.2 Jumper Pins and Mode Setting: Jumper pins can set the configuration of CM108AH. These jumper pin settings affect both USB descriptors and USB audio topology. 7.2.1 MODE Pin and MSEL Pin 81 9 If MODE pin is pulled high (Speaker Mode), a playback only function is activated and there is no recording 51 function declared to the host. At this setting, MSEL pin is ignored and only one input terminal, one output 44 terminal and one feature unit is declared in USB audio topology. MSEL pin setting activates one mixer unit and one feature unit. QQ ： When MSEL = 1, Mixer is enable (AA-Path enable), but with default mute setting; 71 If MODE pin is pulled low (Headset Mode), a full duplex playback and recording function is reported to the host. When MSEL = 0, Mixer is disable (AA-Path disable). 85 ， The above USB audio topology (7.1.4) is an example of headset mode with Mixer enable. 43 41 5 7.2.2 MODE Pin and PWRSEL Pin PWRSEL pin affects the power configuration of CM108AH; together with MODE pin totally 4 combinations are 18 66 programmable. 司 ， Combinations 3.3V Playback Only Playback + Recording (Self Power with 100mA) (Bus Power with 100mA) Speaker Mode: Headset Mode: Playback Only Playback + Recording (Bus Power with 500mA) (Bus Power with 500mA) 公 Headset Mode: 技 有 GND USB Audio Topology Diagram 深 圳 市 金 合 讯 科 PWRSEL www.cmedia.com.tw Copyright © C-Media Electronics Inc. GND Speaker Mode: 限 3.3V MODE Rev. 1.7︱ Page 15/27 CM108AH A High Integrated USB Audio I/O Controller 7.3 HID Feature HID feature is provided by CM108AH so user setting to Volume Up, Volume Down, Playback Mute, Recording Mute, and Hook/Off_Hook button pins is reported to the host to synchronize host side setting. In addition, all CM108AH internal registers can be accessed via HID function call. What’s HID 9 7.3.1 81 USB protocols can configure devices at startup or when they are plugged in at run time. These devices are 51 broken into various device classes. Each device class defines the common behavior and protocols for devices 44 that serve similar functions. The HID (Human Interface Device) class is one of the device classes. 71 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: 85 ， - Front-panel controls, for example: knobs, switches, buttons, and sliders. QQ - Keyboards and pointing devices, for example: mouse, trackballs, and joysticks. example: data gloves, throttles, and steering wheels. 43 41 5 - Controls that might be found on devices such as VCR remote controls, games or simulation devices, for - Devices that may not require human interaction but provide data in a similar format to HID class devices, for 深 圳 市 金 合 讯 科 技 有 限 公 司 ， 18 66 example: bar-code readers, thermometers, or voltmeters. www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 16/27 CM108AH A High Integrated USB Audio I/O Controller 7.3.2 HID Descriptor HID Interface Descriptor Field Size Value (Hex) Description 0 bLength 1 09 Size of this descriptor: 9 byte 1 bDescriptorType 1 04 INTERFACE descriptor type 2 bInterfaceNumber 1 03 Number of Interface: 3 3 bAlternateSetting 1 00 alternate 0 4 bNumEndpoints 1 01 Number of endpoints used by this Interface: 1 5 bInterfaceClass 1 03 HID Interface Class 6 bInterfaceSubClass 1 00 No Subclass 7 bInterfaceProtocol 1 00 Must be set to 0 8 iInterface 1 00 Index of a string descriptor that describes this interface. Size Value (Hex) 0 bLength 1 09 1 bDescriptorType 1 21 2 bcdHID 2 4 bCountryCode 1 5 bNumDescriptors 1 6 bDescriptorType 7 wDescriptorLength ， 司 公 限 技 有 81 71 ： QQ Total 9 Bytes HID Descriptor Type HID class version 1.00 00 01 22 0030 Report Descriptor Numeric expression that is the total size of the optional descriptor: 48 Bytes Interrupt IN Endpoint Descriptor Value (Hex) 合 讯 科 Description Size bLength 1 07 Total 7 Bytes bDescriptorType 1 05 ENDPOINT Descriptor Type bEndpointAddress 1 83 3 bmAttributes 1 03 4 wMaxPacketSize 2 0004 6 bInterval 1 2 0 圳 1 深 2 Field 市 金 Offset 0100 44 51 Field 18 66 Offset 2 85 ， 43 41 5 HID Descriptor 1 9 Offset Description IN Endpoint Endpoint number = 3 Interrupt endpoint type Maximum packet size: 4 bytes 2ms www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 17/27 CM108AH A High Integrated USB Audio I/O Controller 7.3.3 Windows Software Architecture for HID Applications C-Media SDK Reports Winmm.dll Direct Input (device specification) HID.dll Audio Driver Joy Stick Class Driver 51 Keyboard Class Driver 81 9 User32.exe or User.exe 44 Mouse Class Driver USB Gameport USB HUB Driver(USBHUB.SYS) QQ Gameport ： 71 HID Class Driver(HIDCLASS.SYS) 85 ， USB Class Driver(USBD.SYS) 43 41 5 PCI Enumerator 深 圳 市 金 合 讯 科 技 有 限 公 司 ， 18 66 Note: Please contact with our sales for the C-Media SDK example if needed. www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 18/27 CM108AH A High Integrated USB Audio I/O Controller 7.4 Internal Registers All internal registers of CM108AH 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 CM108AH are used to control GPIO, S/PDIF output, and EEPROM data 81 9 access. 51 HID_IR0 (HID input report byte 0) Read/Write 7-6 R Description Default 71 Bits 44 Offset : 0x00 0x0 ： 00: HID_IR1 is used as GPI QQ 10: Values written to HID_IR0-3 are also mapped to EPROM_DATA0-1, EEPROM_CTRL 85 ， Others: Reserved R Reserved 3 R 0: No activity on Record-Mute button 2 R 1 R 43 41 5 5-4 0x0 0x0 1: Record-Mute button pressed then released 0: No activity on Playback-Mute button 0x0 18 66 1: Playback-Mute button pressed then released 0: Volume-Down button released 0x0 1: Volume-Down button pressed 0 0: Volume-Up button released ， R 0x0 技 有 Offset : 0x01 Read/Write 讯 科 Bits R 合 7-0 限 HID_IR1 (HID input report byte 1) 公 司 1: Volume-Up button pressed Description Default When HID_IR0[7:6] == 2’b00: HID_IR1[3:0] is the input from GPIO4 ~ GPIO1 in input mode When HID_OR0[7] == 1’b1: 0x00 圳 市 金 Mapped from EEPROM_DATA0 深 HID_IR2 (HID input report byte 2) Offset : 0x02 Bits Read/Write 7-0 R Description When HID_OR0[7] == 1’b1: Mapped from EEPROM_DATA1 www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 19/27 Default 0x00 CM108AH A High Integrated USB Audio I/O Controller HID_IR3 (HID input report byte 3) Offset : 0x03 Bits Read/Write 7-0 R Description Default When HID_OR0[7] == 1’b1: 0x00 81 9 Mapped from EEPROM_CTRL 51 HID_OR0 (HID output report byte 0) Read/Write Description Default R/W 5 R/W Reserved QQ 18 66 R/W 3-0 85 ， When HID_OR0[7] == 1’b0: Valid bit in SPDIF frame When HID_OR0[7] == 1’b1: Reserved When HID_OR0[7] == 1’b0: First nibble of SPDIF status channel When HID_OR0[7] == 1’b1: Reserved 43 41 5 4 0x0 ： 7-6 0: HID_OR1-2 are used for GPO; HID_OR0, 3 are used for SPDIF 1: Reserved 2: Values written to HID_OR0-3 are also mapped to EEPROM_DATA0-1, EEPROM_CTRL (See Note) 3: Reserved 71 Bits 44 Offset : 0x04 0x0 0x0 ， R/W 0x0 司 Note 1: When EEPROM access is done, HID interrupt will occur. USB host can get the result from interrupt pipe (endpoint 3). 限 公 Note 2: HID_OR0 is used for SPDIF when SPDIF_CONFIG[5] == 1’b0 技 有 HID_OR1 (HID output report byte 1) Read/Write 合 Bits 讯 科 Offset : 0x05 市 金 圳 When HID_OR0[7:6] == 2’b00: HID_OR1[3:0] is the output to GPIO4 ~ GPIO1 in output mode 0: GPO drives L R/W 深 7-0 Description 1: GPO drives H When HID_OR0[7:6] == 2’b01: Reserved When HID_OR0[7:6] == 2’b1x: Mapped to EEPROM__DATA0 www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 20/27 Default 0x00 CM108AH A High Integrated USB Audio I/O Controller HID_OR2 (HID output report byte 2) Offset : 0x06 Bits Read/Write Description Default When HID_OR0[7:6] == 2’b00: 0x00 HID_OR2[3:0] is the mode setting for GPIO4 ~ GPIO1 81 51 1: Set GPIO to output mode R/W When HID_OR0[7:6] == 2’b01: 44 7-0 9 0: Set GPIO to input mode 71 Reserved ： When HID_OR0[7:6] == 2’b1x: QQ Mapped to EEPROM_DATA1 85 ， HID_OR3 (HID output report byte 3) Offset : 0x07 Read/Write Description 43 41 5 Bits When HID_OR0[7] == 1’b0: 7-0 Category byte of SPDIF status channel 18 66 R/W When HID_OR0[7] == 1’b1: ， Mapped to EEPROM_CTRL 深 圳 市 金 合 讯 科 技 有 限 公 司 Note: HID_OR3 is used for SPDIF when SPDIF_CONFIG[5] == 1’b0 www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 21/27 Default 0x00 CM108AH A High Integrated USB Audio I/O Controller Electrical Characteristics 8.1 Absolute Maximum Rating Symbol Parameter Value Unit Min Digital Supply Voltage – 0.3 V Dvmax Max Digital Supply Voltage +6 V Avmin Min Analog Supply Voltage – 0.3 Avmax Max Analog Supply Voltage +6 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 TBstgB Storage Temperature Range -40 to +125 P0PC ESD (HBM) ESD Human Body Mode 4000 V ESD (MM) ESD Machine Mode 200 V Latch Up JEDEC Standard No.78, Mar 1997 200 mA 81 51 V 44 V 71 ： 85 ， QQ Operation Conditions 18 66 8.2 Operation conditions Min Typ Max Unit 4.5 5.0 5.5 V 4.5 5.0 5.5 V - 35 mA - 500 uA -15 - ， 司 Analog Supply Voltage 限 公 Digital Supply Voltage 技 有 Total Power Consumption Suspend Mode Power Consumption 深 圳 市 金 合 讯 科 Operating ambient temperature www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 22/27 70 9 Dvmin 43 41 5 8 PoPC CM108AH A High Integrated USB Audio I/O Controller 8.3 Electrical Parameters Min Typ Max Unit - 16 - Bits THD + N (-3dBr) - -74.29 - dB SNR - 93.6 - dB Silent SNR - 98.2 - dB Dynamic range - 93.8 - Frequency response 48KHz 20 - 20K Frequency Response 44.1KHz 20 - 20K Output Voltage (rms) - 1.25 - Output Voltage Swing 0.5 - 81 44 dB ： 71 Hz Hz Vrms V QQ 4.0 - 16 - Bits THD + N (-3dBr) - -71.1 - dB SNR - 93.7 - dB Silent SNR - 98.2 - dB Dynamic Range - 93.8 - dB 20 - 20K Hz 20 - 20K - 1.25 - Vrms 0.5 - 4.0 V - 16 - bit - -76.1 - dB - 83.1 - dB - 81.6 - dB Frequency Response 48KHz 20 - 19.2K Hz Frequency Response 44.1KHz 20 - 17.6K Hz Input Range 0 - 2.88 Vpp 18 66 ， Frequency Response 44.1KHz 司 Output Voltage (rms) 限 公 Output Voltage Swing THD + N (-3dBr) 讯 科 SNR 技 有 Resolution 市 金 合 Dynamic Range 43 41 5 Resolution Frequency Response 48KHz ADC Amplification Volume Control Level -45 - 0 dB Volume Control Step - 38 - Steps 圳 深 85 ， DAC (32 Ohm Loading) Microphone Input Boost Gain - +20 - dB Gain Adjustment Range 0 - 22.5 dB Gain Adjustment Steps - 16 - Steps -33.0 - 12.0 dB - 32 - Steps Mixer Gain Adjustment Mixer Gain Adjustment Steps www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 23/27 9 Resolution 51 DAC (10K Ohm Loading) CM108AH A High Integrated USB Audio I/O Controller 9 Audio Quality Graphs 9.1 Line Out Freq Response @ 48KHz Sample Rate (10K Ohm Loading) A u d io P r e c is io n 0 9 /2 6 /0 8 1 4 :3 3 :5 1 d x=-19 .98 0 k H z d y =-3.1 32 d B 9 +1 81 +0 -0 . 0 1 d B r 51 -1 44 -2 71 -3 -3 . 1 4 3 A ： -4 50 100 200 500 1k 2k 5k 85 ， -6 20 QQ -5 Hz T ra c e C o lo r L i n e S tyl e T h ic k D a ta 1 1 1 2 C ya n Ye llo w S o lid S o lid 1 1 F a s tte s t.C h .1 A m p l !N o r m a l i ze F a s tte s t.C h .2 A m p l !N o r m a l i ze A xi s 43 41 5 Sweep 10k 12 90 .k9 9 8 k Com m ent L e ft L e ft Line Out THD+N @ 48KHz sample rate (10K Ohm Loading) ， 9.2 18 66 V i s ta - F r e q u e n c y R e s p o n s e - M 4 8 k .a t2 7 公 +0 限 -10 技 有 -20 -30 -50 A -70 讯 科 -40 d B r 市 金 合 -60 -80 0 9 /2 6 /0 8 1 4 :2 7 :0 7 司 A ud io P re c is io n -90 深 圳 -100 -110 -120 20 50 100 200 500 1k 2k Hz Sw eep Tra ce C o lo r L in e S tyle Th ick D a ta Axis 1 1 1 2 C ya n Ye llo w S o lid S o lid 2 2 An lr.TH D + N Am p l An lr.TH D + N Am p l L e ft L e ft Com m ent Vis ta -D -A TH D +N .a t2 7 www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 24/27 5k 10k 20k CM108AH A High Integrated USB Audio I/O Controller 9.3 Microphone Input Freq Response @ 48KHz Sample Rate Audio Precision A-D FREQUENCY RESPONSE dx=-19.980 kHz -1 09/26/08 14:52:45 dy=+1.389 dB -1.2 51 81 9 -1.4 -1.423 -1.6 -1.8 d B F S 44 -2 71 -2.2 ： -2.4 QQ -2.6 -3 20 50 100 200 500 85 ， -2.8 -2.812 1k 2k 43 41 5 Hz Trace Color Line Style Thick Data Axis 1 1 1 2 Yellow Cyan Solid Solid 1 1 DSP Anlr.Level A DSP Anlr.Level B 10k Com m ent 20k 20k Curs or1 Left Left *-2.812 dBFS -2.812 dBFS 18 66 Sweep 5k ， Vis ta-A-D Frequency Res pons e.at2c Microphone Input THD+N @ 48KHz Sample Rate 公 司 9.4 A -D T H D + N v s F R E Q U E N C Y 技 有 +0 讯 科 -2 0 -4 0 合 -6 0 -8 0 市 金 d B F S 0 9 /2 6 /0 8 1 4 :5 1 :1 3 限 A u d io P re c is io n 圳 -1 0 0 深 -1 2 0 20 50 100 200 500 1k 2k 5k Hz Sw eep T ra c e C o lo r L in e S tyle T h ic k D a ta Axis 1 1 1 2 Ye llo w C ya n S o lid S o lid 1 1 D S P An lr .T H D + N Am p l A D S P An lr .T H D + N Am p l B L e ft L e ft Vis ta -A-D T H D + N .a t2 c www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 25/27 Com m ent 10k 20k CM108AH A High Integrated USB Audio I/O Controller 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, Version 1.11 深 圳 市 金 合 讯 科 技 有 限 公 司 ， 18 66 43 41 5 85 ， QQ ： 71 44 51 81 9 www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 26/27 CM108AH 85 ， QQ ： 71 44 51 81 9 A High Integrated USB Audio I/O Controller 圳 市 金 合 讯 科 技 有 限 公 司 ， 18 66 43 41 5 －End of Specifications－ 深 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：[email protected] Disclaimer: Information furnished by C-Media Electronics Inc. is believed to be accurate and reliable. However, no responsibility is assumed by C-Media Electronics Inc. for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of C-Media. Trademark and registered trademark are the property of their respective owners. www.cmedia.com.tw Copyright © C-Media Electronics Inc. Rev. 1.7︱ Page 27/27