On Wed, 2002-04-03 at 20:06, Daniel Cruz wrote:

>  Please enlight me on that, why is USB time critical?... I understand is not
> greatly fast, but there si anything else?..

If you use Isoc pipe it will probably be serviced around few
milliseconds, but in theory the request can be just dropped on the
floor, USB is designed this way.

If you use other pipes then the transfers can take longer, depending on
the type of transfer. Maybe 10 ms, maybe even 100 ms ... These transfers
are guaranteed to succeed, but no obligations on "when" part...

Would you like to define your timing tolerances?

Dmitri

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