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LPC2103 PLL

Started by Jason June 20, 2011
Ok this isnt a question of how but why? and what?

I was finally re-reading the PLL information in the User Manual of the LPC210x family and i stumbled across this:

"The input frequency is multiplied up the range of 10 MHz to 60 MHz using a Current Controlled Oscillators (CCO)."

Its on Page 48, "9. Phase Locked Loop (PLL)" second sentence.

Now im lost here because everywhere else in the datasheet and manual it states i can reach 70Mhz. Which is true?

Can i only get 60Mhz or can i get 70Mhz ?

An Engineer's Guide to the LPC2100 Series

You caught an error in the manual. This sentence is bogus. The device does run at 70 MHz.

Bob

--- In l..., "Jason" wrote:
>
> Ok this isnt a question of how but why? and what?
>
> I was finally re-reading the PLL information in the User Manual of the LPC210x family and i stumbled across this:
>
> "The input frequency is multiplied up the range of 10 MHz to 60 MHz using a Current Controlled Oscillators (CCO)."
>
> Its on Page 48, "9. Phase Locked Loop (PLL)" second sentence.
>
> Now im lost here because everywhere else in the datasheet and manual it states i can reach 70Mhz. Which is true?
>
> Can i only get 60Mhz or can i get 70Mhz ?
>

Yay! So i can in deed make it hit 70Mhz... Now i have to edit my site..

Thanks.
--- In l..., "Bob T" wrote:
>
> You caught an error in the manual. This sentence is bogus. The device does run at 70 MHz.
>
> Bob
>
> --- In l..., "Jason" wrote:
> >
> > Ok this isnt a question of how but why? and what?
> >
> > I was finally re-reading the PLL information in the User Manual of the LPC210x family and i stumbled across this:
> >
> > "The input frequency is multiplied up the range of 10 MHz to 60 MHz using a Current Controlled Oscillators (CCO)."
> >
> > Its on Page 48, "9. Phase Locked Loop (PLL)" second sentence.
> >
> > Now im lost here because everywhere else in the datasheet and manual it states i can reach 70Mhz. Which is true?
> >
> > Can i only get 60Mhz or can i get 70Mhz ?
>

Hey can i also get some feedback on this page:
http://atomsofttech.com/know/index.php/mnuarm/71-the-clock-lpc210x

--- In l..., "Bob T" wrote:
>
> You caught an error in the manual. This sentence is bogus. The device does run at 70 MHz.
>
> Bob
>
> --- In l..., "Jason" wrote:
> >
> > Ok this isnt a question of how but why? and what?
> >
> > I was finally re-reading the PLL information in the User Manual of the LPC210x family and i stumbled across this:
> >
> > "The input frequency is multiplied up the range of 10 MHz to 60 MHz using a Current Controlled Oscillators (CCO)."
> >
> > Its on Page 48, "9. Phase Locked Loop (PLL)" second sentence.
> >
> > Now im lost here because everywhere else in the datasheet and manual it states i can reach 70Mhz. Which is true?
> >
> > Can i only get 60Mhz or can i get 70Mhz ?
>