On 9/20/05, PicDude <picdude2@narwani.org> wrote:
> On Tuesday 20 September 2005 07:52 am, Vasile Surducan scribbled:
> >  Usually a 400KHz I2C will work at 100KHz as well. So there is no
> > selection need like in the hardware SSP PIC module. There are I2C
> > devices running at 1MHz or 1.7MHz (maybe other frequencies too but I
> > did't seen) but all works at 100KHz without any selection, only when
> > switching to high speed they need a bit to be configured.
>
> But how does the switch to high speed take place?

In the standard mode one bit from the configuration word is changing
the device speed to the fast mode. Note that neither 100KHz or 400KHz
is not the fast mode. This is valable usualy only for 1MHz or above.

cheers,
Vasile

> Cheers,
> -Neil.
>
>
> > cheers,
> > Vasile
>
>
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