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Sep 12th, 2011
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  1. Bus 001 Device 011: ID 0d8c:0121 C-Media Electronics, Inc.
  2. Device Descriptor:
  3. bLength 18
  4. bDescriptorType 1
  5. bcdUSB 1.10
  6. bDeviceClass 0 (Defined at Interface level)
  7. bDeviceSubClass 0
  8. bDeviceProtocol 0
  9. bMaxPacketSize0 64
  10. idVendor 0x0d8c C-Media Electronics, Inc.
  11. idProduct 0x0121
  12. bcdDevice 1.00
  13. iManufacturer 3 C-Media Electronics Inc.
  14. iProduct 1 USB PnP Audio Device
  15. iSerial 0
  16. bNumConfigurations 1
  17. Configuration Descriptor:
  18. bLength 9
  19. bDescriptorType 2
  20. wTotalLength 151
  21. bNumInterfaces 3
  22. bConfigurationValue 1
  23. iConfiguration 0
  24. bmAttributes 0xa0
  25. (Bus Powered)
  26. Remote Wakeup
  27. MaxPower 100mA
  28. Interface Descriptor:
  29. bLength 9
  30. bDescriptorType 4
  31. bInterfaceNumber 0
  32. bAlternateSetting 0
  33. bNumEndpoints 0
  34. bInterfaceClass 1 Audio
  35. bInterfaceSubClass 1 Control Device
  36. bInterfaceProtocol 0
  37. iInterface 0
  38. AudioControl Interface Descriptor:
  39. bLength 9
  40. bDescriptorType 36
  41. bDescriptorSubtype 1 (HEADER)
  42. bcdADC 1.00
  43. wTotalLength 47
  44. bInCollection 1
  45. baInterfaceNr( 0) 1
  46. AudioControl Interface Descriptor:
  47. bLength 12
  48. bDescriptorType 36
  49. bDescriptorSubtype 2 (INPUT_TERMINAL)
  50. bTerminalID 2
  51. wTerminalType 0x0201 Microphone
  52. bAssocTerminal 0
  53. bNrChannels 2
  54. wChannelConfig 0x0003
  55. Left Front (L)
  56. Right Front (R)
  57. iChannelNames 0
  58. iTerminal 0
  59. AudioControl Interface Descriptor:
  60. bLength 9
  61. bDescriptorType 36
  62. bDescriptorSubtype 3 (OUTPUT_TERMINAL)
  63. bTerminalID 7
  64. wTerminalType 0x0101 USB Streaming
  65. bAssocTerminal 0
  66. bSourceID 8
  67. iTerminal 0
  68. AudioControl Interface Descriptor:
  69. bLength 7
  70. bDescriptorType 36
  71. bDescriptorSubtype 5 (SELECTOR_UNIT)
  72. bUnitID 8
  73. bNrInPins 1
  74. baSource( 0) 10
  75. iSelector 0
  76. AudioControl Interface Descriptor:
  77. bLength 10
  78. bDescriptorType 36
  79. bDescriptorSubtype 6 (FEATURE_UNIT)
  80. bUnitID 10
  81. bSourceID 2
  82. bControlSize 1
  83. bmaControls( 0) 0x01
  84. Mute Control
  85. bmaControls( 1) 0x02
  86. Volume Control
  87. bmaControls( 2) 0x02
  88. Volume Control
  89. iFeature 0
  90. Interface Descriptor:
  91. bLength 9
  92. bDescriptorType 4
  93. bInterfaceNumber 1
  94. bAlternateSetting 0
  95. bNumEndpoints 0
  96. bInterfaceClass 1 Audio
  97. bInterfaceSubClass 2 Streaming
  98. bInterfaceProtocol 0
  99. iInterface 0
  100. Interface Descriptor:
  101. bLength 9
  102. bDescriptorType 4
  103. bInterfaceNumber 1
  104. bAlternateSetting 1
  105. bNumEndpoints 1
  106. bInterfaceClass 1 Audio
  107. bInterfaceSubClass 2 Streaming
  108. bInterfaceProtocol 0
  109. iInterface 0
  110. AudioStreaming Interface Descriptor:
  111. bLength 7
  112. bDescriptorType 36
  113. bDescriptorSubtype 1 (AS_GENERAL)
  114. bTerminalLink 7
  115. bDelay 1 frames
  116. wFormatTag 1 PCM
  117. AudioStreaming Interface Descriptor:
  118. bLength 20
  119. bDescriptorType 36
  120. bDescriptorSubtype 2 (FORMAT_TYPE)
  121. bFormatType 1 (FORMAT_TYPE_I)
  122. bNrChannels 2
  123. bSubframeSize 2
  124. bBitResolution 16
  125. bSamFreqType 4 Discrete
  126. tSamFreq[ 0] 8000
  127. tSamFreq[ 1] 16000
  128. tSamFreq[ 2] 44100
  129. tSamFreq[ 3] 48000
  130. Endpoint Descriptor:
  131. bLength 9
  132. bDescriptorType 5
  133. bEndpointAddress 0x82 EP 2 IN
  134. bmAttributes 5
  135. Transfer Type Isochronous
  136. Synch Type Asynchronous
  137. Usage Type Data
  138. wMaxPacketSize 0x00c8 1x 200 bytes
  139. bInterval 1
  140. bRefresh 0
  141. bSynchAddress 0
  142. AudioControl Endpoint Descriptor:
  143. bLength 7
  144. bDescriptorType 37
  145. bDescriptorSubtype 1 (EP_GENERAL)
  146. bmAttributes 0x01
  147. Sampling Frequency
  148. bLockDelayUnits 0 Undefined
  149. wLockDelay 0 Undefined
  150. Interface Descriptor:
  151. bLength 9
  152. bDescriptorType 4
  153. bInterfaceNumber 2
  154. bAlternateSetting 0
  155. bNumEndpoints 1
  156. bInterfaceClass 3 Human Interface Device
  157. bInterfaceSubClass 0 No Subclass
  158. bInterfaceProtocol 0 None
  159. iInterface 0
  160. HID Device Descriptor:
  161. bLength 9
  162. bDescriptorType 33
  163. bcdHID 1.00
  164. bCountryCode 0 Not supported
  165. bNumDescriptors 1
  166. bDescriptorType 34 Report
  167. wDescriptorLength 50
  168. Report Descriptors:
  169. ** UNAVAILABLE **
  170. Endpoint Descriptor:
  171. bLength 7
  172. bDescriptorType 5
  173. bEndpointAddress 0x87 EP 7 IN
  174. bmAttributes 3
  175. Transfer Type Interrupt
  176. Synch Type None
  177. Usage Type Data
  178. wMaxPacketSize 0x0010 1x 16 bytes
  179. bInterval 1
  180. Device Status: 0x0000
  181. (Bus Powered)
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