libusb_ss_endpoint_companion_descriptor Struct Reference
[USB descriptors]

A structure representing the superspeed endpoint companion descriptor. More...

#include <libusb.h>

Data Fields
uint8_t	bLength
	Size of this descriptor (in bytes).
uint8_t	bDescriptorType
	Descriptor type.
uint8_t	bMaxBurst
	The maximum number of packets the endpoint can send or recieve as part of a burst.
uint8_t	bmAttributes
	In bulk EP: bits 4:0 represents the maximum number of streams the EP supports.
uint16_t	wBytesPerInterval
	The total number of bytes this EP will transfer every service interval.

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Detailed Description

A structure representing the superspeed endpoint companion descriptor.

This descriptor is documented in section 9.6.7 of the USB 3.0 specification. All multiple-byte fields are represented in host-endian format.

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Field Documentation

uint8_t libusb_ss_endpoint_companion_descriptor::bDescriptorType

Descriptor type.

Will have value libusb_descriptor_type::LIBUSB_DT_SS_ENDPOINT_COMPANION in this context.

uint8_t libusb_ss_endpoint_companion_descriptor::bMaxBurst

The maximum number of packets the endpoint can send or recieve as part of a burst.

uint8_t libusb_ss_endpoint_companion_descriptor::bmAttributes

In bulk EP: bits 4:0 represents the maximum number of streams the EP supports.

In isochronous EP: bits 1:0 represents the Mult - a zero based value that determines the maximum number of packets within a service interval

uint16_t libusb_ss_endpoint_companion_descriptor::wBytesPerInterval

The total number of bytes this EP will transfer every service interval.

valid only for periodic EPs.

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The documentation for this struct was generated from the following file:

• libusb.h