Lpc2000

I am not an expert in this, but I think the higher the multiplier (= a 
lower external crystal freq) the more jitter you get on the CCLK. So if 
you want a very stable CCLK you choose the highest supported external 
crystal frequency you can find.

Richard Duits.


seangra wrote:

> Assuming that I want to be able run at maximum speed, what
> oscillator/crystal should I choose?
>
> Normally the choice is dictated by the divider for the UART, but in
> this case (from what I understand) with the prescaler you can get just
> about any baud rate you want from whatever source frequency you choose.
>
> So if 10*6 or 20*3 or 15*4 all yield 60MHz, what factors are there
> that influence which frequency should be used?
>
>
>
>
>
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