Who can tell me the relationship between XCLK and CCLK?
2005-09-06 by fangneu
Thank you very much and I wish that somebody can help me!!
Thread
Who can tell me the relationship between XCLK and CCLK?
RE: [lpc2000] Who can tell me the relationship between XCLK and CCLK?
2005-09-06 by Mark Crow
Look at the LPC2000 user manual and look up the VPBDIV register.
Show quoted textHide quoted text
-----Original Message-----
From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On Behalf Of
fangneu
Sent: Monday, September 05, 2005 11:50 PM
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Who can tell me the relationship between XCLK and CCLK?
Thank you very much and I wish that somebody can help me!!
SPONSORED LINKS Microprocessor Microcontrollers Pic microcontrollers
8051 microprocessor
----------------------------------------------------------------------------
--
YAHOO! GROUPS LINKS
a.. Visit your group "lpc2000" on the web.
b.. To unsubscribe from this group, send an email to:
lpc2000-unsubscribe@yahoogroups.com
c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
----------------------------------------------------------------------------
--
[Non-text portions of this message have been removed]Re: Who can tell me the relationship between XCLK and CCLK?
2005-09-07 by lpc2100_fan
Mark, if I am not mistaken VPBDIV is there to divide CCLK into PCLK (Peripheral Clock). XCLK is the external clock, which is identical to CCLK if the PLL is not used. Otherwise CCLK = XCLK * PLL factor Nevertheless I could not find XCLK either in the data sheet or the Users Manual, how did you come up with these terms? Bob --- In lpc2000@yahoogroups.com, "Mark Crow" <mcrow@p...> wrote: > Look at the LPC2000 user manual and look up the VPBDIV register. > -----Original Message----- > From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On Behalf Of > fangneu > Sent: Monday, September 05, 2005 11:50 PM > To: lpc2000@yahoogroups.com > Subject: [lpc2000] Who can tell me the relationship between XCLK and CCLK? > > > Thank you very much and I wish that somebody can help me!! > ----------------------------------------------------------------------------
Show quoted textHide quoted text
> -- > YAHOO! GROUPS LINKS > > a.. Visit your group "lpc2000" on the web. > > b.. To unsubscribe from this group, send an email to: > lpc2000-unsubscribe@yahoogroups.com > > c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service. >
Re: [lpc2000] Re: Who can tell me the relationship between XCLK and CCLK?
2005-09-07 by Samuel
If you place a 10Mhz crystal to the XTAL, the CCLK will be 60Mhz, it in the datasheet. then of course you have your pheripheral clock... --- lpc2100_fan <lpc2100_fan@...> wrote: > Mark, > > if I am not mistaken VPBDIV is there to divide CCLK > into PCLK > (Peripheral Clock). XCLK is the external clock, > which is identical to > CCLK if the PLL is not used. Otherwise CCLK = XCLK * > PLL factor > > Nevertheless I could not find XCLK either in the > data sheet or the > Users Manual, how did you come up with these terms? > > Bob > > --- In lpc2000@yahoogroups.com, "Mark Crow" > <mcrow@p...> wrote: > > Look at the LPC2000 user manual and look up the > VPBDIV register. > > -----Original Message----- > > From: lpc2000@yahoogroups.com > [mailto:lpc2000@yahoogroups.com]On > Behalf Of > > fangneu > > Sent: Monday, September 05, 2005 11:50 PM > > To: lpc2000@yahoogroups.com > > Subject: [lpc2000] Who can tell me the > relationship between XCLK > and CCLK? > > > > > > Thank you very much and I wish that somebody can > help me!! > > > ---------------------------------------------------------------------------- > > -- > > YAHOO! GROUPS LINKS > > > > a.. Visit your group "lpc2000" on the web. > > > > b.. To unsubscribe from this group, send an > email to: > > lpc2000-unsubscribe@yahoogroups.com > > > > c.. Your use of Yahoo! Groups is subject to > the Yahoo! Terms of > > Service. > > > > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Re: Who can tell me the relationship between XCLK and CCLK?
2005-09-07 by fangneu
I get it. In the register of VPBDIV you can set the XCLKDIV just as VPBDIV. So XCLK can set as CCLK/1,CCLK/2 or CCLK/4. Is it right? --- In lpc2000@yahoogroups.com, Samuel <emddjava@y...> wrote: > If you place a 10Mhz crystal to the XTAL, the CCLK > will be 60Mhz, it in the datasheet. then of course you > have your pheripheral clock... > > > --- lpc2100_fan <lpc2100_fan@y...> wrote: > > > Mark, > > > > if I am not mistaken VPBDIV is there to divide CCLK > > into PCLK > > (Peripheral Clock). XCLK is the external clock, > > which is identical to > > CCLK if the PLL is not used. Otherwise CCLK = XCLK * > > PLL factor > > > > Nevertheless I could not find XCLK either in the > > data sheet or the > > Users Manual, how did you come up with these terms? > > > > Bob > > > > --- In lpc2000@yahoogroups.com, "Mark Crow" > > <mcrow@p...> wrote: > > > Look at the LPC2000 user manual and look up the > > VPBDIV register. > > > -----Original Message----- > > > From: lpc2000@yahoogroups.com > > [mailto:lpc2000@yahoogroups.com]On > > Behalf Of > > > fangneu > > > Sent: Monday, September 05, 2005 11:50 PM > > > To: lpc2000@yahoogroups.com > > > Subject: [lpc2000] Who can tell me the > > relationship between XCLK > > and CCLK? > > > > > > > > > Thank you very much and I wish that somebody can > > help me!! > > > > > > -------------------------------------------------------------------- --------
Show quoted textHide quoted text
> > > -- > > > YAHOO! GROUPS LINKS > > > > > > a.. Visit your group "lpc2000" on the web. > > > > > > b.. To unsubscribe from this group, send an > > email to: > > > lpc2000-unsubscribe@yahoogroups.com > > > > > > c.. Your use of Yahoo! Groups is subject to > > the Yahoo! Terms of > > > Service. > > > > > > > > > > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com
RE: [lpc2000] Re: Who can tell me the relationship between XCLK and CCLK?
2005-09-07 by Mark Crow
Only 4 bits of VPBDIV are for controlling PCLK. The other 4 are for selecting the CCLK vs XCLK rate (i.e. XCLK = .25 x CCLK or .5 x CCLK or 1 x CCLK).
Show quoted textHide quoted text
-----Original Message-----
From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On Behalf Of
lpc2100_fan
Sent: Tuesday, September 06, 2005 8:05 PM
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Re: Who can tell me the relationship between XCLK and
CCLK?
Mark,
if I am not mistaken VPBDIV is there to divide CCLK into PCLK
(Peripheral Clock). XCLK is the external clock, which is identical to
CCLK if the PLL is not used. Otherwise CCLK = XCLK * PLL factor
Nevertheless I could not find XCLK either in the data sheet or the
Users Manual, how did you come up with these terms?
Bob
--- In lpc2000@yahoogroups.com, "Mark Crow" <mcrow@p...> wrote:
> Look at the LPC2000 user manual and look up the VPBDIV register.
> -----Original Message-----
> From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On
Behalf Of
> fangneu
> Sent: Monday, September 05, 2005 11:50 PM
> To: lpc2000@yahoogroups.com
> Subject: [lpc2000] Who can tell me the relationship between XCLK
and CCLK?
>
>
> Thank you very much and I wish that somebody can help me!!
>
--------------------------------------------------------------------------
--
> --
> YAHOO! GROUPS LINKS
>
> a.. Visit your group "lpc2000" on the web.
>
> b.. To unsubscribe from this group, send an email to:
> lpc2000-unsubscribe@yahoogroups.com
>
> c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service.
>
SPONSORED LINKS Microprocessor Microcontrollers Pic microcontrollers
8051 microprocessor
----------------------------------------------------------------------------
--
YAHOO! GROUPS LINKS
a.. Visit your group "lpc2000" on the web.
b.. To unsubscribe from this group, send an email to:
lpc2000-unsubscribe@yahoogroups.com
c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
----------------------------------------------------------------------------
--
[Non-text portions of this message have been removed]RE: [lpc2000] Re: Who can tell me the relationship between XCLK and CCLK?
2005-09-07 by Mark Crow
Yes.
Show quoted textHide quoted text
-----Original Message-----
From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On Behalf Of
fangneu
Sent: Tuesday, September 06, 2005 9:37 PM
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Re: Who can tell me the relationship between XCLK and
CCLK?
I get it.
In the register of VPBDIV you can set the XCLKDIV just as VPBDIV.
So XCLK can set as CCLK/1,CCLK/2 or CCLK/4.
Is it right?
--- In lpc2000@yahoogroups.com, Samuel <emddjava@y...> wrote:
> If you place a 10Mhz crystal to the XTAL, the CCLK
> will be 60Mhz, it in the datasheet. then of course you
> have your pheripheral clock...
>
>
> --- lpc2100_fan <lpc2100_fan@y...> wrote:
>
> > Mark,
> >
> > if I am not mistaken VPBDIV is there to divide CCLK
> > into PCLK
> > (Peripheral Clock). XCLK is the external clock,
> > which is identical to
> > CCLK if the PLL is not used. Otherwise CCLK = XCLK *
> > PLL factor
> >
> > Nevertheless I could not find XCLK either in the
> > data sheet or the
> > Users Manual, how did you come up with these terms?
> >
> > Bob
> >
> > --- In lpc2000@yahoogroups.com, "Mark Crow"
> > <mcrow@p...> wrote:
> > > Look at the LPC2000 user manual and look up the
> > VPBDIV register.
> > > -----Original Message-----
> > > From: lpc2000@yahoogroups.com
> > [mailto:lpc2000@yahoogroups.com]On
> > Behalf Of
> > > fangneu
> > > Sent: Monday, September 05, 2005 11:50 PM
> > > To: lpc2000@yahoogroups.com
> > > Subject: [lpc2000] Who can tell me the
> > relationship between XCLK
> > and CCLK?
> > >
> > >
> > > Thank you very much and I wish that somebody can
> > help me!!
> > >
> >
> --------------------------------------------------------------------
--------
> > > --
> > > YAHOO! GROUPS LINKS
> > >
> > > a.. Visit your group "lpc2000" on the web.
> > >
> > > b.. To unsubscribe from this group, send an
> > email to:
> > > lpc2000-unsubscribe@yahoogroups.com
> > >
> > > c.. Your use of Yahoo! Groups is subject to
> > the Yahoo! Terms of
> > > Service.
> > >
> >
> >
> >
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
----------------------------------------------------------------------------
--
YAHOO! GROUPS LINKS
a.. Visit your group "lpc2000" on the web.
b.. To unsubscribe from this group, send an email to:
lpc2000-unsubscribe@yahoogroups.com
c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
----------------------------------------------------------------------------
--
[Non-text portions of this message have been removed]Re: Who can tell me the relationship between XCLK and CCLK?
2005-09-07 by lpc2100_fan
Mark, missed it, my bad. Thanks for the clarification! Bob --- In lpc2000@yahoogroups.com, "Mark Crow" <mcrow@p...> wrote: > Only 4 bits of VPBDIV are for controlling PCLK. The other 4 are for > selecting the CCLK vs XCLK rate (i.e. XCLK = .25 x CCLK or .5 x CCLK or 1 x > CCLK). > -----Original Message----- > From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On Behalf Of > lpc2100_fan > Sent: Tuesday, September 06, 2005 8:05 PM > To: lpc2000@yahoogroups.com > Subject: [lpc2000] Re: Who can tell me the relationship between XCLK and > CCLK? > > > Mark, > > if I am not mistaken VPBDIV is there to divide CCLK into PCLK > (Peripheral Clock). XCLK is the external clock, which is identical to > CCLK if the PLL is not used. Otherwise CCLK = XCLK * PLL factor > > Nevertheless I could not find XCLK either in the data sheet or the > Users Manual, how did you come up with these terms? > > Bob > > --- In lpc2000@yahoogroups.com, "Mark Crow" <mcrow@p...> wrote: > > Look at the LPC2000 user manual and look up the VPBDIV register. > > -----Original Message----- > > From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On > Behalf Of > > fangneu > > Sent: Monday, September 05, 2005 11:50 PM > > To: lpc2000@yahoogroups.com > > Subject: [lpc2000] Who can tell me the relationship between XCLK > and CCLK? > > > > > > Thank you very much and I wish that somebody can help me!! > > > -------------------------------------------------------------------------- > -- > > -- > > YAHOO! GROUPS LINKS > > > > a.. Visit your group "lpc2000" on the web. > > > > b.. To unsubscribe from this group, send an email to: > > lpc2000-unsubscribe@yahoogroups.com > > > > c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of > > Service. > > > > > > > SPONSORED LINKS Microprocessor Microcontrollers Pic microcontrollers > 8051 microprocessor > > > ---------------------------------------------------------------------------- > -- > YAHOO! GROUPS LINKS > > a.. Visit your group "lpc2000" on the web. > > b.. To unsubscribe from this group, send an email to: > lpc2000-unsubscribe@yahoogroups.com > > c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service. > > > ----------------------------------------------------------------------------
Show quoted textHide quoted text
> -- > > > > [Non-text portions of this message have been removed]