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A project log for GPSDO IEEE PTP Master

GPS disciplined DCXO with software temperature compensation and IEEE 1588 PTP master

Robert RouquetteRobert Rouquette 05/28/2022 at 23:490 Comments

I've implemented SNMP and the GPSDO logic.  The software is currently using the frequency trimming support in the PTP hardware to under-clock the PPS and steer the edge alignment.  Otherwise, the temperature compensation and PLL logic are working as expected.  I still need to make a breakout board for the DXCO and I2C temperature sensor.

Temperature Compensation:

PPS Tracking:
Comparison against GPS NTP server:

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