The TimeServo system timer IP core offers sub-nanosecond resolution and sub-microsecond accuracy, perfect for FPGA applications needing precise timing mechanisms. It is specifically designed for line-rate independent packet timestamping, though its applications are broader, addressing high-resolution timing requirements. Featuring a PI-DPLL, TimeServo synchronizes with an external PPS signal to achieve exceptional syntonicity. Additionally, its IEEE-1588v2/PTP capabilities allow it to operate as a fully compliant ordinary slave device without host interaction, ensuring seamless timing operations across systems. TimeServo's configurability allows for flexible clock domains, making it adaptable to varied FPGA-based applications.