NetTimeLogic provides a DCF Slave core for synchronizing to a DCF77 sender. DCF77 is a German longwave time signal and standard-frequency radio station. It receives the time from the DCF77 sender near Frankfurt, Germany or any other DCF compatible source. This allows around 10 millisecond accuracy over a wireless interface.
All cores are in plain VHDL and completely FPGA vendor independent. The DCF decoding and processing is implemented as full hardware core, no soft-core CPUs are used.
The DCF Slave from NetTimeLogic is a full hardware only implementation of a DCF synchronizer. It allows to synchronize the local clock to a DCF77 sender without the need of software or a soft-core CPU.