Lpc2000

> If on-chip PLL system or boot-loader is used, input clock frequency
> is limited to exclusive range of 10 MHz to 25 Mhz.
>
> These restrictions are imposed by the design of the PLL circuitary.
> Since all Philips LPC2000 parts have the same PLL module, above
> requirements exist in the case of LPC2104/5/6 parts, too.
>
> Regards,
>
> Philips Apps Team


Ok, so it's the ref. input on the phase comparator that's the limiting
factor,
or similar.
That makes sense now.

Thanks !

-- Kris