Jallist Archive Feb 2003

Re: speed of crystal and serial communication

From: Vasile Surducan <vasile(at)s3.itim-cj.ro>
Date: 03 Feb 2003 09:21:56 +0200 (EET)


True, for instance serial,jal does not work the same for 4 or 20MHz.
My tests shows the 20MHz is working worst than 4MHz at slow baud rates:
4800
( and this thing is explained in interval.jal )

regards,
Vasile
http://www.geocities.com/vsurducan


On Mon, 3 Feb 2003, JAPUS11 wrote:

> Hi Nisheeth,
>
>   There're few thing that not depent of the xtal speed, and serial
> library is not one of them. You should fetch/set your library for your
> xtal speed.
>
>
> Regards, Javi.
>
>
> ----- Mensaje Original -----
> De: "nisheeth_007 " 
> Fecha: Lunes, Febrero 3, 2003 5:41 am
> Asunto: [jallist] speed of crystal and serial communication
>
> > 
> >
> >
> > 
> > hi
> >
> >     how does the speed of crystal effects the serial
> > communication
> >
> > speed ?
> >
> >     in JALcc the software serial communicaton routine are written
> >
> > for 20Mhz crystal. I am using 4 Mhz crystal.
> >
> >     What will be the effect of using 4Mhz crystal instead of
> > 20Mhz ?
> >
> >     Will the circuit work ?
> >
> >     upto what serial communication speed will the circuit work
> >
> > satisfactory ?
> >
> >
> >
> >
> >
> > thanks
> >
> > nisheeth
> >
> >
> >
> > 
> >
> >
> >
> >
> >
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