Method and device for obtaining TDC delay stepping based on reference clock period

The invention discloses a method and device for obtaining TDC delay stepping based on a reference clock period, and the method comprises the following steps: enabling N TDCs in a phase-locked loop circuit, i.e., time-to-digital converters, to be connected and oscillated in a negative feedback manner through access control, and obtaining a stable oscillation frequency after a period of time; taking a reference clock with a known frequency in the phase-locked loop circuit as a timer, performing timing counting on the output of the time-to-digital converter within a preset time length, and counting the number of oscillated pulses; and calculating the stepping precision of the digital time converter based on the known reference clock period and the obtained pulse number. The stepping precision of the TDC is obtained through pre-detection, it is guaranteed that the loop can obtain the accurate stepping precision value, and loop locking and performance are guaranteed. 本发明公开了一种基于参考时钟周期获得TDC延迟步进的方法及装置，其中包括以下步骤：通过通路控制