Bulk USB Device

Windows device driver information for Bulk USB Device

The specifications for the Bulk USB Device began with the introduction of the versions 1.0 and 1.1 of the Universal Serial Bus interface. It encompasses all related issues with the bulk-only transport including status, commands, and data among others. This implementation is specific to the Bulk endpoints and does not in any way concern those occurring in the Control or Interrupt endpoints. In this context the device driver of the Bulk USB Device makes use of the default pipe in order to make way for a STALL condition within the Bulk endpoints. This also allows it to issue requests that are specific to a certain class based on existing industry specifications. Since it is isolated to the Bulk endpoints the Interrupt endpoint is never incorporated into the execution of the action. The device driver is associated with the logical units of the host computer system that share common hardware characteristics. The device driver provides the necessary support for the mass storage devices on a common Universal Serial Bus interface but does not implement the interface bridge for the supported device.

The device driver is partly involved in the process of resetting the supported mass storage device including its associated interface which in this case is the Universal Serial Bus communication port. This action allows the Bulk USB Device to be prepared for the next CBW that will be sent by the host computer system. In this case the host computer system will send the requests using the default pipe associated with the attached device. The device is responsible for preserving the value of the bulk data toggle endpoints and bits. This is in relation with the STALL condition regardless of the previously issued reset command. A NAK status stage routine will be implemented by the device driver until the reset request process is completed. The device driver is also partly responsible for designating the logical units that will serve as the destination for the CBW. The determination of the number of logical units that will be supported by the hardware component is based on the Get Max LUN method. It is highly recommended you run a free registry scan for and Bulk USB Device errors before installing any driver updates.