Interface Descriptor For Uasp Mode (Super-/High-Speed Only); Endpoint Descriptor; Bot Mode; Data-Out - Renesas mPD720231 User Manual

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PD720231
4.4.2

Interface descriptor for UASP mode (Super-/High-speed only)

Offset Field
0 bLength
1 bDescriptorType
2 bInterfaceNumber
3 bAlternateSetting
4 bNumEndpoints
5 bInterfaceClass
6 bInterfaceSubClass
7 bInterfaceProtocol
8 iInterface
4.5

Endpoint Descriptor

Each endpoint used for an interface has its own descriptor. This descriptor contains the information
required by the host to determine the bandwidth requirements of each endpoint. An endpoint descriptor is
always returned as part of the configuration information returned by a GET_DESCRIPTOR Configuration
request.
Each Super-speed endpoint described in an interface is followed by a SuperSpeed Endpoint Companion
descriptor. This descriptor contains additional endpoint characteristics that are only defined for Super-speed
endpoints.
4.5.1

BOT mode

4.5.1.1 Data-OUT

(1)
Endpoint Descriptor (All speeds)
Offset Field
0 bLength
1 bDescriptorType
2 bEndpointAddress
3 bmAttributes
4 wMaxPacketSize
6 bInterval
R19UH0094EJ0100 Rev 1.00
Mar 1, 2013
Size Value
1 09h Size of descriptor
1 04h Interface descriptor type
1 00h Number of supported interface
1 01h Value used to select alternate setting for the interface
identified in the prior field
1 04h Number of endpoints used by this interface
1 08h Class code: Mass Storage Class.
1 06h SubClass Code: SCSI Transport
1 62h Protocol Code: USB Attached SCSI Protocol
1 00h Index of string descriptor describing interface
Size Value
1 07h Size of descriptor
1 05h Endpoint descriptor type
1 01h Address: 1, Direction: OUT
1 02h Endpoint's attributes (Bulk)
2 0400h or Maximum packet size
0200h or
0400h: 1024 bytes in Super-speed mode.
0040h
0200h: 512 bytes in High-speed mode.
0040h: 64 bytes in Full-speed mode.
1 00h Interval for polling endpoint for data transfers.
4. USB Descriptor Information
Description
Description
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