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USB3803 Datasheet(PDF) 58 Page - Microchip Technology |
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USB3803 Datasheet(HTML) 58 Page - Microchip Technology |
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58 / 99 page  USB3803 DS00001691B-page 58 2014-2015 Microchip Technology Inc. 7.4.5 ENDPOINT DESCRIPTOR (SINGLE-TT) The following table provides endpoint descriptor values for Single-TT operation. 7.4.6 OTHER-SPEED CONFIGURATION DESCRIPTOR The following table provides other-speed configuration descriptor values for Full-Speed operation. 2 InterfaceNumber 1 00h Number of this interface. 3 AlternateSetting 1 00h Value used to select this alternate setting for the inter- face. 4 NumEndpoints 1 01h Number of endpoints used by this interface (not includ- ing endpoint 0). 5 InterfaceClass 1 09h Hub class code. 6 InterfaceSubclass 1 00h Subclass code. 7 InterfaceProtocol 1 00h Single-TT. 8 Interface 1 00h Index of the string descriptor describing this interface (strings not supported). TABLE 7-19: ENDPOINT DESCRIPTOR (FOR STATUS CHANGE ENDPOINT, SINGLE-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 7-20: 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 configuration. yyyyh = 0019h 4 NumInterfaces 1 01h Number of Interfaces supported 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 7-18: INTERFACE DESCRIPTOR (HIGH-SPEED, SINGLE-TT) (CONTINUED) Offset Field Size Value Description |
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