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NRF24AP2-USBQ32-R7 데이터시트(PDF) 24 Page - List of Unclassifed Manufacturers |
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NRF24AP2-USBQ32-R7 데이터시트(HTML) 24 Page - List of Unclassifed Manufacturers |
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24 / 44 page ![]() Revision 1.0 Page 24 of 44 nRF24AP2-USB Product Specification The interface descriptor contains information about the number of endpoints and their class. Table 7. Interface descriptor Endpoint descriptors contain information about the transfer type, interval and the packet size. The host will use the information to decide on the requirements for the bus. The nRF24AP2-USB uses two endpoints for communication with the host, one configured as IN and the other as OUT. Table 8. Endpoint descriptor 1 IN Table 9. Endpoint descriptor 1 OUT Field Notes Value Description bLength 0x09 Valid bDescriptorType 0x04 INTERFACE bInterfaceNumber 0x00 0 bAlternateSetting 0x00 0 bNumEndpoints 0x02 2 bInterfaceClass 0xFF Vendor-specific bInterfaceSubClass 0x00 Vendor-specific bInterfaceProtocol 0x00 None iInterface 0x02 2 Field Notes Value Description bLength 0x07 Valid bDescriptorType 0x05 ENDPOINT bEndpointAddress 0x81 1 IN bmAttributes. TransferType 0x2 Bulk bmAttributes. Reserved 0x00 Zero wMaxPacketSize 0x0040 64 bytes bInterval 0x01 Ignored for full speed, Bulk endpoints Field Notes Value Description bLength 0x07 Valid bDescriptorType 0x05 ENDPOINT bEndpointAddress 0x01 1 OUT bmAttributes. TransferType 0x2 Bulk bmAttributes. Reserved 0x00 Zero wMaxPacketSize 0x0040 64 bytes bInterval 0x01 Ignored for full speed, Bulk endpoints |
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