On Fri, 24 Feb 2006, Mukund JB. wrote:

> Dear All,
> 
> I am looking to the USB Specifications now. At the same time I am
> referring to the Linux USB implementation.
> 
> In 5.12.2 USB Clock model,
> 
> Function device clocks are Sample Clock
> USB Host controller runs at Bus Clock i.e 1Khz (full speed) & 8Khz (high
> speed) devices
> 
> What is Service clock? I am not clean about this. Is it the system Clock
> at which the board host processor runs?

Ignore it.  The specification is talking about a particular model for
computing.  You don't have to follow their model.  In fact, that model is 
completely inappropriate for interative applications.

Alan Stern



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