Your question is a little bit to general as the specifications will differ depending on applications (frequency range, .. etc).
Below you can find a link to CMOS PLL, the 74VHC4046. https://www.fairchildsemi.com/ds/74/74VHC4046.pdf
It contains specifications and internal block diagram.
Maybe fro there you will find a good point to start with ..
thanks for the link, IanP.
actually i want to know the general specification that an cmos ic designer should set before designing cmos pll.
another thing, which one is better? analog only or mixed-signal cmos pll?
what are the PLL's specifications if i attempt to design a a cmos pll for frequency synthesizer using in wireless communications based on WCDMA or CDMA2000?
I want to have a try on it for my last year project, but i am a learner, i also want to know how difficulty and how long it will be.
My tutor may have a chance to tape out of .35 process. Is it possible to do the work?