Lpc2000

> You could clue us in on what specific processor the question is 
> about.  The UART clock is a bit different in some of the uCs.

Sorry, my bad.

It's LPC2148.

> 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.

What effect does jitter on the CCLK line have?

Original question:
> 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?




[Non-text portions of this message have been removed]