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UM0290 датащи(PDF) 29 Page - STMicroelectronics |
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UM0290 датащи(HTML) 29 Page - STMicroelectronics |
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29 / 76 page ![]() UM0290 Device firmware upgrade 29/76 DFU mode device descriptor This descriptor is only present in the DFU mode descriptor set. Table 6. DFU mode device descriptor Offset Field Size Value Description 0 bLength 1 12h Size of this descriptor, in bytes. 1 bDescriptorType 1 01h DEVICE descriptor type. 2 bcdUSB 2 0100h USB specification release number in binary coded decimal. 4 bDeviceClass 1 00h See interface. 5 bDeviceSubClass 1 00h See interface. 6 bDeviceProtocol 1 00h See interface. 7 bMaxPacketSize0 1 8,16,32, 64 Maximum packet size for endpoint zero. 64 bytes for the STR7 and STR9 devices 8 idVendor 1 0483h Vendor ID 10 idProduct DF11h Product ID 12 bcdDevice 011Ah Version of the STMicroelectronics DFU ExtensionSpecification release 14 iManufacturer Index Index of string descriptor. 15 iProduct Index Index of string descriptor. 16 iSerialNumber Index Index of string descriptor. 17 bNumbConfigurations 01h One configuration only for DFU. |
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