USB2.0集线器HUB
USB集线器描述符bDeviceProtocol
2026-09-18
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bLength : 0x12 (18 bytes)
bDescriptorType : 0x01 (Device Descriptor)
bcdUSB : 0x210 (USB Version 2.1)
bDeviceClass : 0x09 (Hub)
bDeviceSubClass : 0x00
bDeviceProtocol : 0x01 (Hi-speed hub with single TT)
bMaxPacketSize0 : 0x40 (64 bytes)
idVendor : 0x05E3 (Genesys Logic, Inc.)
idProduct : 0x0610
bcdDevice : 0x0655
iManufacturer : 0x01 (String Descriptor 1)
Language 0x0409 : "GenesysLogic"
iProduct : 0x02 (String Descriptor 2)
Language 0x0409 : "USB2.1 Hub"
iSerialNumber : 0x00 (No String Descriptor)
bNumConfigurations : 0x01 (1 Configuration)
bLength : 0x12 (18 bytes)
bDescriptorType : 0x01 (Device Descriptor)
bcdUSB : 0x320 (USB Version 3.2)
bDeviceClass : 0x09 (Hub)
bDeviceSubClass : 0x00
bDeviceProtocol : 0x03 (SuperSpeed hub)
bMaxPacketSize0 : 0x09 (9 bytes)
idVendor : 0x05E3 (Genesys Logic, Inc.)
idProduct : 0x0626
bcdDevice : 0x0655
iManufacturer : 0x01 (String Descriptor 1)
Language 0x0409 : "GenesysLogic"
iProduct : 0x02 (String Descriptor 2)
Language 0x0409 : "USB3.1 Hub"
iSerialNumber : 0x00 (No String Descriptor)
bNumConfigurations : 0x01 (1 Configuration)
并结合USBIF的定义：https://usb.org/defined-class-codes#anchor_BaseClass09h
| Base Class | SubClass | Protocol | Meaning |
|---|---|---|---|
| 09h | 00h | 00h | Full speed Hub |
| 01h | Hi-speed hub with single TT | ||
| 02h | Hi-speed hub with multiple TTs | ||
| 03h | SuperSpeed hub |
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