PLL Lock detector

I dont think there is a PLL lock detector register in an 8051

martin

I didn't say I am using a 8051.. :)

it is a trasmitter chip, so is it ?

mart> >

Again, the datasheet is probably more accurate than my first guess.

Rene

Boki wrote:

Going on that top posting game (which doesn't matter anyway, given the highly informative level of those threads)

But didn't he just told us that he doesn't have a datasheet and he doesn't have a part number, either.

Boki must be AI program setup for dreaming he's designing some electronic device. Someday they'll program it to design an AI program that design an AI program that... and we'll finally know the truth through a Boki message:

"Stuck overflaw at 12:07. How can expert fix my register. I'm frequently locked. PL advice. Boki "

-- Thanks, Fred.

"Rene Tschaggelar" a écrit dans le message de news:4416bc57$ snipped-for-privacy@news1.ethz.ch...

So you have a chip and you cannot provide a typenumber?

Meindert

What is commonly done is look at the output of a flip-flop phase comparator and if you're not in phase "most of the time" (subject to threshold), then you're not locked.

When you're locked, the output of the phase comparator will be occasional blips of correction. When you're not in lock, you get the beat frequencies of the divided-down VCO with the reference.

Many PLL chips use an off-chip capacitor to set the lock-detect threshold. While the capacitor is important in setting the threshold, this is not something that will help you measure phase noise 80dB down and 50Hz away from the fundamental :-).

Look at the NE565 or CD4046 datasheets for some info (and especially as you have no datasheets on your parts?)

Tim.

It is impossible to disclose any information that related to our customer.

Just think about FM transmiter.

BR /Boki.

ram

I think module provider can't provide enough information, because they are not chip designer.

btw, thanks for your > snipped-for-privacy@ms21.h> > Hi All,

Or friend of Yoda be he. Be top-poster are you.

Ken

Boki wrote:

You need to read that register with something and provide a hardware signal if that's what the rest of your circuitry requires.

Ken

No, J.K. Flip-Flop.

-- Thanks, Fred.

"Boki" a écrit dans le message de news: snipped-for-privacy@e56g2000cwe.googlegroups.com... J.K. Rowl> Going on that top posting game (which doesn't matter anyway, given the

program