On Monday 29 November 2004 06:51, usb blog wrote:
>       In drivers/usb/host/Kconfig, (linux 2.6.7) they say:
> 
>               "The Open Host Controller Interface (OHCI) is a standard for 
> accessing
>         USB 1.1 host controller hardware.  It does more in hardware than 
> Intel's
>         UHCI specification."
> 
> 
>               What does ot do more in hardware than Intel's
>         UHCI specification ?

One example:  sending a 4 KB buffer takes one TD with OHCI,
covering 64+ packets; with UHCI, each packet takes one TD.

Another:  OHCI has separate schedules for control, bulk,
and periodic transfers.  UHCI has just one.

- Dave


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