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USB3503 数据表(PDF) 44 Page - Microchip Technology

部件名 USB3503
功能描述  USB 2.0 HSIC High-Speed Hub Controller Optimized
PDF  73 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB3503 数据表(HTML) 44 Page - Microchip Technology

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USB3503
DS00001584B-page 44
 2011-2015 Microchip Technology Inc.
7.3.5
INTERFACE DESCRIPTOR (MULTI-TT)
The following table provides interface descriptor values for High-Speed Multi-TT operation.
7.3.6
ENDPOINT DESCRIPTOR (MULTI-TT)
The following table provides endpoint descriptor values for Multi-TT operation.
TABLE 7-9:
INTERFACE DESCRIPTOR (MULTI-TT, HIGH-SPEED)
Offset
Field
Size
Value
Description
0
Length
1
09h
Size of this Descriptor.
1
DescriptorType
1
04h
Interface Descriptor Type.
2
InterfaceNumber
1
00h
Number of this interface.
3
AlternateSetting
1
01h
Value used to select this alternate setting for the
interface.
4
NumEndpoints
1
01h
Number of endpoints used by this interface (not including
endpoint 0).
5
InterfaceClass
1
09h
Hub class code.
6
InterfaceSubclass
1
00h
Subclass code.
7
InterfaceProtocol
1
02h
Multiple-TTs.
8
Interface
1
00h
Index of the string descriptor describing this interface
(strings not supported).
TABLE 7-10:
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).



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