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  1. Hello,
  2.  
  3. What could be causing failed packets
  4.  
  5.  
  6. <pre>
  7.  
  8. Connection Status Device connected
  9. Current Configuration 1
  10. Speed Full
  11. Device Address 1
  12. Number Of Open Pipes 0
  13.  
  14. Device Descriptor NXP LPC17xx Speaker
  15. Offset Field Size Value Description
  16. 0 bLength 1 12h
  17. 1 bDescriptorType 1 01h Device
  18. 2 bcdUSB 2 0200h USB Spec 2.0
  19. 4 bDeviceClass 1 00h Class info in Ifc Descriptors
  20. 5 bDeviceSubClass 1 00h
  21. 6 bDeviceProtocol 1 00h
  22. 7 bMaxPacketSize0 1 40h 64 bytes
  23. 8 idVendor 2 1FC7h
  24. 10 idProduct 2 4005h
  25. 12 bcdDevice 2 0100h 1.00
  26. 14 iManufacturer 1 01h "NXP Semicond "
  27. 15 iProduct 1 02h "NXP LPC17xx Speaker "
  28. 16 iSerialNumber 1 03h "DEMO00000000"
  29. 17 bNumConfigurations 1 01h
  30.  
  31. Configuration Descriptor 1 Bus Powered, 100 mA
  32. Offset Field Size Value Description
  33. 0 bLength 1 09h
  34. 1 bDescriptorType 1 02h Configuration
  35. 2 wTotalLength 2 0076h
  36. 4 bNumInterfaces 1 02h
  37. 5 bConfigurationValue 1 01h
  38. 6 iConfiguration 1 00h
  39. 7 bmAttributes 1 80h Bus Powered
  40. 4..0: Reserved ...00000
  41. 5: Remote Wakeup ..0..... No
  42. 6: Self Powered .0...... No, Bus Powered
  43. 7: Reserved (set to one)
  44. (bus-powered for 1.0) 1.......
  45. 8 bMaxPower 1 32h 100 mA
  46.  
  47. Interface Descriptor 0/0 Audio, 0 Endpoints
  48. Offset Field Size Value Description
  49. 0 bLength 1 09h
  50. 1 bDescriptorType 1 04h Interface
  51. 2 bInterfaceNumber 1 00h
  52. 3 bAlternateSetting 1 00h
  53. 4 bNumEndpoints 1 00h
  54. 5 bInterfaceClass 1 01h Audio
  55. 6 bInterfaceSubClass 1 01h Audio Control
  56. 7 bInterfaceProtocol 1 00h
  57. 8 iInterface 1 00h
  58.  
  59. Audio Control Interface Header Descriptor
  60. Offset Field Size Value Description
  61. 0 bLength 1 09h
  62. 1 bDescriptorType 1 24h Audio Control Interface Header
  63. 2 7 01 00 01 27 00 01 01
  64.  
  65. Audio Control Input Terminal Descriptor
  66. Offset Field Size Value Description
  67. 0 bLength 1 0Ch
  68. 1 bDescriptorType 1 24h Audio Control Input Terminal
  69. 2 10 02 01 01 01 00 01 00 00
  70. 00 00
  71.  
  72. Audio Control Feature Unit Descriptor
  73. Offset Field Size Value Description
  74. 0 bLength 1 09h
  75. 1 bDescriptorType 1 24h Audio Control Feature Unit
  76. 2 7 06 02 01 01 03 00 00
  77.  
  78. Audio Control Output Terminal Descriptor
  79. Offset Field Size Value Description
  80. 0 bLength 1 09h
  81. 1 bDescriptorType 1 24h Audio Control Output Terminal
  82. 2 7 03 03 01 03 00 02 00
  83.  
  84. Interface Descriptor 1/0 Audio, 0 Endpoints
  85. Offset Field Size Value Description
  86. 0 bLength 1 09h
  87. 1 bDescriptorType 1 04h Interface
  88. 2 bInterfaceNumber 1 01h
  89. 3 bAlternateSetting 1 00h
  90. 4 bNumEndpoints 1 00h
  91. 5 bInterfaceClass 1 01h Audio
  92. 6 bInterfaceSubClass 1 02h Audio Streaming
  93. 7 bInterfaceProtocol 1 00h
  94. 8 iInterface 1 00h
  95.  
  96. Interface Descriptor 1/1 Audio, 2 Endpoints
  97. Offset Field Size Value Description
  98. 0 bLength 1 09h
  99. 1 bDescriptorType 1 04h Interface
  100. 2 bInterfaceNumber 1 01h
  101. 3 bAlternateSetting 1 01h
  102. 4 bNumEndpoints 1 02h
  103. 5 bInterfaceClass 1 01h Audio
  104. 6 bInterfaceSubClass 1 02h Audio Streaming
  105. 7 bInterfaceProtocol 1 00h
  106. 8 iInterface 1 00h
  107.  
  108. Audio Streaming Interface Descriptor
  109. Offset Field Size Value Description
  110. 0 bLength 1 07h
  111. 1 bDescriptorType 1 24h Audio Streaming Interface
  112. 2 5 01 01 01 01 00
  113.  
  114. Audio Streaming Format Type Descriptor
  115. Offset Field Size Value Description
  116. 0 bLength 1 0Bh
  117. 1 bDescriptorType 1 24h Audio Streaming Format Type
  118. 2 9 02 01 01 02 10 01 40 1F
  119. 00
  120.  
  121. Endpoint Descriptor 03 3 Out, Isochronous, 1 ms
  122. Offset Field Size Value Description
  123. 0 bLength 1 09h
  124. 1 bDescriptorType 1 05h Endpoint
  125. 2 bEndpointAddress 1 03h 3 Out
  126. 3 bmAttributes 1 05h Isochronous, Asynchronous, Data
  127. 1..0: Transfer Type ......01 Isochronous
  128. 3..2: Sync Type ....01.. Asynchronous
  129. 5..4: Usage Type ..00.... Data
  130. 7..6: Reserved 00......
  131. 4 wMaxPacketSize 2 0012h 18 bytes
  132. 6 bInterval 1 01h 1 ms
  133. 7 bRefresh 1 00h
  134. 8 bSynchAddress 1 83h
  135.  
  136. Audio Streaming Isochronous Audio Data Endpoint Descriptor
  137. Offset Field Size Value Description
  138. 0 bLength 1 07h
  139. 1 bDescriptorType 1 25h Audio Streaming Isochronous Audio Data Endpoint
  140. 2 5 01 00 02 00 00
  141.  
  142. Endpoint Descriptor 83 3 In, Isochronous, 1 ms
  143. Offset Field Size Value Description
  144. 0 bLength 1 09h
  145. 1 bDescriptorType 1 05h Endpoint
  146. 2 bEndpointAddress 1 83h 3 In
  147. 3 bmAttributes 1 01h Isochronous, No Sync, Data
  148. 1..0: Transfer Type ......01 Isochronous
  149. 3..2: Sync Type ....00.. No Sync
  150. 5..4: Usage Type ..00.... Data
  151. 7..6: Reserved 00......
  152. 4 wMaxPacketSize 2 0003h 3 bytes
  153. 6 bInterval 1 01h 1 ms
  154. 7 bRefresh 1 01h
  155. 8 bSynchAddress 1 00h
  156. </pre>
  157.  
  158.  
  159.  
  160. <pre>
  161. USBlyzer Report
  162. Capture List
  163. Type Seq Time Elapsed Duration Request Request Details Raw Data I/O C:I:E Device Object Device Name Driver Name IRP Status
  164. START 0001 4:11:41.519
  165. URB 0002 4:11:41.526 6.661 ms Sync Reset Pipe and Clear Stall 01:01:83 83DC8C80h 0000007a usbccgp 84E65E00h
  166. URB 0003 4:11:41.526 6.675 ms Sync Reset Pipe and Clear Stall 01:01:83 83DEC6F0h USBPDO-5 usbhub 84E65E00h
  167. URB 0004 4:11:41.526 6.706 ms Isoch Transfer 160 bytes data 2E C6 FC C0 95 05 44 40... out 01:01:03 83DC8C80h 0000007a usbccgp 83B1E4F0h
  168. 00000000 2E C6 FC C0 95 05 44 40 55 3F 52 29 F7 D9 3F BD ......D@U?R)..?.
  169. 00000010 28 C3 70 C2 24 BC C0 FC E7 42 6B 39 79 3F 71 36 (.p.$....Bk9y?q6
  170. 00000020 7F E5 8A BE 5D C4 5A CA BF BE 61 D5 2F 31 43 3D ....].Z...a./1C=
  171. 00000030 29 2E FB 3A 72 36 EF 3F 20 33 D9 DD B5 C2 FE C7 )..:r6.? 3......
  172. 00000040 E3 C0 30 C7 23 C1 7C CA A4 0D 91 16 63 DA B3 BC ..0.#.|.....c...
  173. 00000050 1E D7 B9 20 61 3F 75 3A A9 41 01 3C B9 44 DD 25 ... a?u:.A...D.%
  174. 00000060 27 D0 87 BF 81 C1 BC C0 43 C5 C8 BB 6D 0A 38 46 '.......C...m.8F
  175. 00000070 F8 39 95 3F DE 3F BA 3C F0 42 3C 20 E6 DD 84 CF .9.?.?...B. ....
  176. 00000080 52 C9 F0 C9 7C DF C9 E6 93 F4 9C F5 C5 D0 8F C1 R...|...........
  177. 00000090 7F C1 00 C2 28 EC 1A 24 7A 3C 21 40 A4 3D 78 42 ....(..$z.!@.=xB
  178. URB 0005 4:11:41.526 6.714 ms Isoch Transfer 160 bytes data 2E C6 FC C0 95 05 44 40... out 01:01:03 83DEC6F0h USBPDO-5 usbhub 83B1E4F0h
  179. 00000000 2E C6 FC C0 95 05 44 40 55 3F 52 29 F7 D9 3F BD ......D@U?R)..?.
  180. 00000010 28 C3 70 C2 24 BC C0 FC E7 42 6B 39 79 3F 71 36 (.p.$....Bk9y?q6
  181. 00000020 7F E5 8A BE 5D C4 5A CA BF BE 61 D5 2F 31 43 3D ....].Z...a./1C=
  182. 00000030 29 2E FB 3A 72 36 EF 3F 20 33 D9 DD B5 C2 FE C7 )..:r6.? 3......
  183. 00000040 E3 C0 30 C7 23 C1 7C CA A4 0D 91 16 63 DA B3 BC ..0.#.|.....c...
  184. 00000050 1E D7 B9 20 61 3F 75 3A A9 41 01 3C B9 44 DD 25 ... a?u:.A...D.%
  185. 00000060 27 D0 87 BF 81 C1 BC C0 43 C5 C8 BB 6D 0A 38 46 '.......C...m.8F
  186. 00000070 F8 39 95 3F DE 3F BA 3C F0 42 3C 20 E6 DD 84 CF .9.?.?...B. ....
  187. 00000080 52 C9 F0 C9 7C DF C9 E6 93 F4 9C F5 C5 D0 8F C1 R...|...........
  188. 00000090 7F C1 00 C2 28 EC 1A 24 7A 3C 21 40 A4 3D 78 42 ....(..$z.!@.=xB
  189. URB 0006-0003 4:11:41.526 6.746 ms 71 us Sync Reset Pipe and Clear Stall 01:01:83 83DEC6F0h USBPDO-5 usbhub 84E65E00h Success (Success)
  190. URB 0007-0002 4:11:41.526 6.749 ms 88 us Sync Reset Pipe and Clear Stall 01:01:83 83DC8C80h 0000007a usbccgp 84E65E00h Success (Success)
  191. URB 0008 4:11:41.526 6.758 ms Isoch Transfer 3 bytes buffer in 01:01:83 83DC8C80h 0000007a usbccgp 84FD5790h
  192. URB 0009 4:11:41.526 6.763 ms Isoch Transfer 3 bytes buffer in 01:01:83 83DEC6F0h USBPDO-5 usbhub 84FD5790h
  193. URB 0010-0009 4:11:41.526 6.831 ms 69 us Isoch Transfer in 01:01:83 83DEC6F0h USBPDO-5 usbhub 84FD5790h Unsuccessful (Internal HC Error)
  194. URB 0011-0008 4:11:41.526 6.834 ms 77 us Isoch Transfer in 01:01:83 83DC8C80h 0000007a usbccgp 84FD5790h Unsuccessful (Internal HC Error)
  195. URB 0012 4:11:41.526 6.847 ms Sync Reset Pipe and Clear Stall 01:01:83 83DC8C80h 0000007a usbccgp 83DD4008h
  196. URB 0013 4:11:41.526 6.853 ms Sync Reset Pipe and Clear Stall 01:01:83 83DEC6F0h USBPDO-5 usbhub 83DD4008h
  197. URB 0014-0013 4:11:41.526 6.889 ms 36 us Sync Reset Pipe and Clear Stall 01:01:83 83DEC6F0h USBPDO-5 usbhub 83DD4008h Success (Success)
  198. URB 0015-0012 4:11:41.526 6.892 ms 45 us Sync Reset Pipe and Clear Stall 01:01:83 83DC8C80h 0000007a usbccgp 83DD4008h Success (Success)
  199. URB 0016 4:11:41.526 6.898 ms Isoch Transfer 3 bytes buffer in 01:01:83 83DC8C80h 0000007a usbccgp 84FD5790h
  200. URB 0017 4:11:41.526 6.902 ms Isoch Transfer 3 bytes buffer in 01:01:83 83DEC6F0h USBPDO-5 usbhub 84FD5790h
  201. URB 0018-0017 4:11:41.526 6.952 ms 51 us Isoch Transfer in 01:01:83 83DEC6F0h USBPDO-5 usbhub 84FD5790h Unsuccessful (Internal HC Error)
  202. URB 0019-0016 4:11:41.526 6.955 ms 57 us Isoch Transfer in 01:01:83 83DC8C80h 0000007a usbccgp 84FD5790h Unsuccessful (Internal HC Error)
  203. URB 0020 4:11:41.526 6.965 ms Sync Reset Pipe and Clear Stall 01:01:83 83DC8C80h 0000007a usbccgp 84E65E00h
  204. URB 0021 4:11:41.526 6.971 ms Sync Reset Pipe and Clear Stall 01:01:83 83DEC6F0h USBPDO-5 usbhub 84E65E00h
  205. URB 0022-0021 4:11:41.526 7.003 ms 32 us Sync Reset Pipe and Clear Stall 01:01:83 83DEC6F0h USBPDO-5 usbhub 84E65E00h Success (Success)
  206. URB 0023-0020 4:11:41.526 7.005 ms 40 us Sync Reset Pipe and Clear Stall 01:01:83 83DC8C80h 0000007a usbccgp 84E65E00h Success (Success)
  207. URB 0024 4:11:41.526 7.012 ms Isoch Transfer 3 bytes buffer in 01:01:83 83DC8C80h 0000007a usbccgp 84FD5790h
  208. URB 0025 4:11:41.526 7.016 ms Isoch Transfer 3 bytes buffer in 01:01:83 83DEC6F0h USBPDO-5 usbhub 84FD5790h
  209. URB 0026-0025 4:11:41.526 7.069 ms 54 us Isoch Transfer in 01:01:83 83DEC6F0h USBPDO-5 usbhub 84FD5790h Unsuccessful (Internal HC Error)
  210. URB 0027-0024 4:11:41.526 7.072 ms 61 us Isoch Transfer in 01:01:83 83DC8C80h 0000007a usbccgp 84FD5790h Unsuccessful (Internal HC Error)
  211. URB 0028 4:11:41.526 7.083 ms Sync Reset Pipe and Clear Stall 01:01:83 83DC8C80h 0000007a usbccgp 83DD4008h
  212. URB 0029 4:11:41.526 7.089 ms Sync Reset Pipe and Clear Stall 01:01:83 83DEC6F0h USBPDO-5 usbhub 83DD4008h
  213. URB 0030-0029 4:11:41.526 7.121 ms 32 us Sync Reset Pipe and Clear Stall 01:01:83 83DEC6F0h USBPDO-5 usbhub 83DD4008h Success (Success)
  214. URB 0031-0028 4:11:41.526 7.124 ms 41 us Sync Reset Pipe and Clear Stall 01:01:83 83DC8C80h 0000007a usbccgp 83DD4008h Success (Success)
  215. URB 0032 4:11:41.526 7.130 ms Isoch Transfer 3 bytes buffer in 01:01:83 83DC8C80h 0000007a usbccgp 84FD5790h
  216. URB 0033 4:11:41.526 7.134 ms Isoch Transfer 3 bytes buffer in 01:01:83 83DEC6F0h USBPDO-5 usbhub 84FD5790h
  217. URB 0034-0033 4:11:41.526 7.185 ms 50 us Isoch Transfer in 01:01:83 83DEC6F0h USBPDO-5 usbhub 84FD5790h Unsuccessful (Internal HC Error)
  218. URB 0035-0032 4:11:41.526 7.187 ms 57 us Isoch Transfer in 01:01:83 83DC8C80h 0000007a usbccgp 84FD5790h Unsuccessful (Internal HC Error)
  219. URB 0036 4:11:41.526 7.198 ms Sync Reset Pipe and Clear Stall 01:01:83 83DC8C80h 0000007a usbccgp 84E65E00h
  220. URB 0037 4:11:41.526 7.203 ms Sync Reset Pipe and Clear Stall 01:01:83 83DEC6F0h USBPDO-5 usbhub 84E65E00h
  221. URB 0038-0037 4:11:41.526 7.234 ms 31 us Sync Reset Pipe and Clear Stall 01:01:83 83DEC6F0h USBPDO-5 usbhub 84E65E00h Success (Success)
  222. URB 0039-0036 4:11:41.526 7.237 ms 39 us Sync Reset Pipe and Clear Stall 01:01:83 83DC8C80h 0000007a usbccgp 84E65E00h Success (Success)
  223. URB 0040 4:11:41.526 7.243 ms Isoch Transfer 3 bytes buffer in 01:01:83 83DC8C80h 0000007a usbccgp 84FD5790h
  224. URB 0041 4:11:41.526 7.247 ms Isoch Transfer 3 bytes buffer in 01:01:83 83DEC6F0h USBPDO-5 usbhub 84FD5790h
  225.  
  226.  
  227.  
  228. This report was generated by USBlyzer
  229. </pre>
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