- USB 3.0 EXTENSIBLE HOST CONTROLLER DRIVER SERIAL
- USB 3.0 EXTENSIBLE HOST CONTROLLER DRIVER DRIVER
- USB 3.0 EXTENSIBLE HOST CONTROLLER DRIVER SOFTWARE
Additionally, in the case of reads from the device, the device was polled each schedule interval, even if there was no data to read.
USB 3.0 EXTENSIBLE HOST CONTROLLER DRIVER SOFTWARE
The architectures of the legacy USB host controllers (OHCI, UHCI, and EHCI) were very similar in that the "schedule" for the transactions to be performed on the USB were built by software in host memory, and the host controller hardware would continuously read the schedules to determine what transactions needed to be driven on the USB, and when, even if no data was moved. Since then, mobile platforms have become the platform of choice, and their batteries have made power consumption a key consideration.
USB 3.0 EXTENSIBLE HOST CONTROLLER DRIVER SERIAL
PS/2, serial port, parallel port, game port, etc., and host power consumption was not an important consideration at the time. When USB was originally developed in 1995, it was targeted at desktop platforms to stem the proliferation of connectors that were appearing on PCs, e.g.
USB 3.0 EXTENSIBLE HOST CONTROLLER DRIVER DRIVER
The xHCI architecture was designed to support all USB speeds, including SuperSpeed (5 Gbit/s) and future speeds, under a single driver stack. The OHCI and UHCI controllers support only USB 1 speed devices (1.5 Mbit/s and 12 Mbit/s), and the EHCI only supports USB 2 devices (480 Mbit/s).
This article includes a list of general references, but it lacks sufficient corresponding inline citations.