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UM0290 Datasheet(PDF) 72 Page - STMicroelectronics |
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UM0290 Datasheet(HTML) 72 Page - STMicroelectronics |
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72 / 76 page ![]() USB voice demos UM0290 72/76 bInCollection 0x01 Number of streaming interfaces : 1 baInterfaceNr 0x01 baInterfaceNr: 1 USB microphone input terminal descriptor bLength 0x0C Size of this descriptor in bytes: 12 bDescriptortype 0x24 Descriptor type: AUDIO INTERFACE DESCRIPTOR TYPE bDescriptorSubtype 0x02 DescriptorSubtype: AUDIO CONTROL INPUT TERMINAL bTerminalID 0x01 Terminal ID: 1 wTerminalType 0x0201 Terminal Type: USB MICROPHONE bAssocTerminal 0x00 No association bNrChannels 0x01 One channel wChannelConfig 0x0000 Channel Configuration: MONO iChannelNames 0x00 Unused iTerminal 0x00 Unused USB microphone output terminal descriptor bLength 0x09 Size of this descriptor in bytes bDescriptortype 0x24 Descriptor type: AUDIO INTERFACE DESCRIPTOR TYPE bDescriptorSubtype 0x03 Descriptor Subtype: AUDIO CONTROL OUTPUT TERMINAL bUnitID 0x02 Unit ID: 2 wTerminalType 0x0101 AUDIO_USB_STREAMING bAssocTerminal 0x00 Unused bSourceID 0x01 Source ID: 1 iTerminal 0x00 Unused USB microphone standard AS interface descriptor - audio streaming zero bandwidth (Interface 1, Alternate Setting 0) bLength 0x09 Size of this descriptor in bytes bDescriptortype 0x24 Descriptor type: AUDIO INTERFACE DESCRIPTOR TYPE bInterfaceNumber 0x01 Interface Number: 1 bAlternateSetting 0x00 Alternate Setting: 0 bNumEndpoints 0x00 Not used (zero bandwidth) bInterfaceClass 0x01 Interface Class: USB DEVICE CLASS AUDIO Table 25. Interface descriptors (continued) Field Value Description |
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