5

Clock generation

5.1

Temperature-compensated crystal oscillator (TCXO)

Highly stable oscillator controls the down conversion process in RF block of the Teseo-LIV4F. Characteristics of

this component are important factors for higher sensitivity to maximize performances especially in weak-signal

environments, as well as to minimize the time to first fix (TTFF) and better navigation stability.

5.2

Real-time clock (RTC)

This is an always-on power domain dedicated to RTC logic (backup system) and supplied with a dedicated

voltage regulator.

The RTC provides a high-resolution clock. It keeps the time when the system is inactive and it is internally used to

wake up the system when in low power mode. It has a clock trimming feature to compensate for the accuracy of

the crystal and a secured time update.

Teseo-LIV4F

Clock generation

DS13957 - Rev 6

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