Lpc2000

--- In lpc2000@yahoogroups.com, Robert Adsett <subscriptions@a...> wrote:
> At 06:25 PM 1/8/05 +0000, you wrote:
> >Hi Kelvin
> 
> It's Robert actually, Kelvin is fictional ;)
> 
> 
> >We're using a standard MAXIM RS232 chip. The interface is a known
> >working 115.2 kbps capable interface. I was wondering whether it is
> >bootloader firmware version dependant? I take it you have had no
> >problems running at 115.k? It's strange that 9600 and 38400 work fine.
> 
> After I sent it another neuron went off and I checked the User
manual.  The 
> possible baud rates depend on the crystal frequency.  For the 2106 User 
> manual it's in table 145 on page 185.  I expect the MAX is fine but
some 
> level translators have fairly low bandwidths (I've seen specs as low as 
> 9600 bd but I don't remember the part that was for).  Reviewing the
User 
> manual I expect you've just hit the limit but you might also want to
review 
> the data sheet for the MAXIM part.
> 
> Myself, I've not felt the need to try programming above 38400.
> 
> Robert
> 
> 
> " 'Freedom' has no meaning of itself.  There are always restrictions,
> be they legal, genetic, or physical.  If you don't believe me, try to
> chew a radio signal. "
> 
>                          Kelvin Throop, III

Thanks Robert I'll have read of the RS232 data sheets and the 2106
user manual.

On the subject of feeling the need to try to program above
38400...we've got >200K of Thumb code and thousands of chips to ISP in
the future...I know it will make a difference to our to our PCB
subcontractor.

Cheers

Jane