-------- Avamander writes: > I was wondering if anyone here has replaced the 54 MHz oscillator on the > Raspberry Pi 4 with a GNSS-disciplined rubidium standard? An overkill > upgrade, but is technically doable? What hardware would it take in addition > to a GNSS-disciplined rubidium standard and a Pi 4?
This trick has gotten a lot harder over the decades. Higher and higher PLL ratios in the chips means they demand more of their clock signal. I dont know if the datasheet for the Rpi4 is available to check what the requirements are, but you should probably expect to need some kind of PLL chip to deliver a clean 54 MHz on the RPi4, locked to your external frequency. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
