Lines Matching +full:full +full:- +full:speed

5 27-Dec-2002
7 The EHCI driver is used to talk to high speed USB 2.0 devices using
8 USB 2.0-capable host controller hardware.  The USB 2.0 standard is
11     - "High Speed" 480 Mbit/sec (60 MByte/sec)
12     - "Full Speed" 12 Mbit/sec (1.5 MByte/sec)
13     - "Low Speed" 1.5 Mbit/sec
15 USB 1.1 only addressed full speed and low speed.  High speed devices
23 (TT) in the hub, which turns low or full speed transactions into
24 high speed "split transactions" that don't waste transfer bandwidth.
31 While usb-storage devices have been available since mid-2001 (working
33 been available since late 2001, and other kinds of high speed devices
34 appear to be on hold until more systems come with USB 2.0 built-in.
39 other changes to the Linux-USB core APIs, including the hub driver,
43 - David Brownell
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62 High Speed Isochronous (ISO) transfer support is also functional, but
65 Full Speed Isochronous transfer support, through transaction translators,
67 transfers can't share much code with the code for high speed ISO transfers,
69 most USB audio and video devices can't be connected to high speed buses.
72 ---------------
99     # modprobe ehci-hcd
103     # rmmod ehci-hcd
106 "ohci-hcd"  or "uhci-hcd".  In case of any trouble with the EHCI driver,
108 take over (at lower speed) all the devices that were previously handled
127 		usb-storage doing disk I/O; watch the request queues!)
138 but they may want to check for "usb_device->speed == USB_SPEED_HIGH".
139 High speed devices can do things that full speed (or low speed) ones
142 periodic transfers) use different encodings when operating at high speed.
157 individual high speed packets, driver intelligence, and of course the
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194 default ehci-hcd driver uses the minimum latency, which means that if
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201 To get even 20 MByte/sec transfer rates, Linux-USB device drivers will
202 need to keep the EHCI queue full.  That means issuing large requests,
220 help make high speed transfers run as fast as they can.