> At the moment I'm in the 2.5nS resolution range and successfully made a > GPSDO that my company uses for the DVB-T synchronization needs. Next step > will be to use a Maxim/Dallas delay line to hardware correct the PPS by the > negative sawtooth and try to improve the TDC resolution. Maybe a small > Virtex will replace the Spartan...
Check out the high speed serial interfaces. I think they have a mode where you can use them as a raw serial to parallel interface: the receive PLL is locked to the reference clock rather than the data stream. A Spartan 6 blurb says 3.2 gigabits which is 312.5 ps. I think that can be made to work without fancy placement or calibration. (I haven't tried it.) -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
