Ehci usb driver

The latest revision of the specification is Revision 1. This revision is an editorial update from 0. Revision 1. The complete Revision 1. All current development should be targeting this revision of the specification. When the related question is created, it will be automatically linked to the original question. Ask a new question Ask a new question Cancel. Tags More Cancel. Share More Cancel. Similar topics. This thread has been locked. Prodigy 50 points. However, do make a point of testing device drivers through USB 2.

Those hubs report some failures, such as disconnections, differently when transaction translators are in use; some drivers have been seen to behave badly when they see different faults than OHCI or UHCI report.

USB 2. Latency is also a performance concern. Bulk transfers are most often used where throughput is an issue. Eight USB 2. At this writing, individual USB 2. This is of course subject to change; and some devices now go faster, while others go slower. Seems like a reasonable trade off for a product that beat all the others to market by over a year!

This makes life a lot easier than with USB 1. USB 2. Note there are NOT companions of both types, it is one type or another. These values can be used to find the configuration space of the controller, which contains the memory mapped address of the EHCI registers.