Lpc2000

Gus,

I agree with Joel about the UART frequencies. To answer your question,
use a 10 MHz crystal, the only one that is within the PLL range 10-25
and that can generate the 70 MHz dead on.

Bob

--- In lpc2000@yahoogroups.com, "Joel Winarske" <joelw@i...> wrote:
>
> > Anyone can help me in figuring out the best oscillator frequency to
> > run LPC2103 at the high speed (near 70Mhz) but keeping UART standard
> > baud rates? 9600 and 115200 for example
> 
> The LPC2101/2/3 implement a fractional divider on the UARTs, just as
in the
> LPC214x series.
> 
> Enter in your peripheral clock and desired baud rate into my utility
and it
> will return a list sorted by margin of error:
> http://groups.yahoo.com/group/lpc2000/files/Tools/lpc2fdcalc.exe
> 
> You should be able to run right at 70MHz and get nearly any baud
rate you
> like, at least on the UARTs...
> 
> 
> Joel
>