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USB3803 Datasheet(PDF) 64 Page - Microchip Technology |
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USB3803 Datasheet(HTML) 64 Page - Microchip Technology |
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64 / 99 page  USB3803 DS00001691B-page 64 2014-2015 Microchip Technology Inc. 7.5.7 ENDPOINT DESCRIPTOR (MULTI-TT) The following table provides endpoint descriptor values for Multi-TT operation. 7.5.8 OTHER-SPEED CONFIGURATION DESCRIPTOR The following table provides other-speed configuration descriptor values for Full-Speed operation. 7 InterfaceProtocol 1 02h Multiple-TTs. 8 Interface 1 00h Index of the string descriptor describing this interface (strings not supported). TABLE 7-29: ENDPOINT DESCRIPTOR (FOR STATUS CHANGE ENDPOINT, MULTI-TT) Offset Field Size Value Description 0 Length 1 07h Size of this Descriptor. 1 DescriptorType 1 05h Endpoint Descriptor Type. 2 EndpointAddress 1 81h The address of the endpoint on the USB device. 3 Attributes 1 03h Describes the endpoint’s attributes. (interrupt only, no synchronization, data endpoint). 4 MaxPacketSize 2 0001h Maximum packet size for this endpoint. 6 Interval 1 0Ch Interval for polling endpoint for data transfers (Maximum Possible). TABLE 7-30: OTHER-SPEED CONFIGURATION DESCRIPTOR (FULL-SPEED) Offset Field Size Value Description 0 Length 1 09h Size of this Descriptor. 1 DescriptorType 1 07h Other-Speed Configuration Descriptor Type. 2 TotalLength 2 yyyyh Total combined length of all descriptors for this configu- ration. yyyyh = 0019h 4 NumInterfaces 1 01h Number of interfaced described by this configuration. 5 ConfigurationValue 1 01h Value to use to select configuration. 6 Configuration 1 00h Index of String Descriptor describing this configuration (string not supported). TABLE 7-28: INTERFACE DESCRIPTOR (MULTI-TT, HIGH-SPEED) (CONTINUED) Offset Field Size Value Description |
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