Si5351 + PIC16F1455 USB controller

[Gosha]

https://content.u-blox.com/sites/default...005%29.pdf

1.7.2 Timepulse and frequency reference
NEO-6T comes with a timepulse output which can be configured from 0.25 Hz up to 10 MHz. The timepulse can
either be used for time synchronization (i.e. 1 pulse per second) or as a reference frequency in the MHz range. A
timepulse in the MHz range provides excellent long-term frequency accuracy and stability.

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