Design of clock and data recovery system’s behavioral model for high speed transceivers of serial interfaces

Abstract

This paper provides a parameterizable behavioral model of a clock and data recovery system (CDR) based on phase-locked loop (PLL) for the receiver part of a high-speed serial interfaces. The model was used to calculate parameters and characteristics of the system as well as estimate their calculation error depending on the sub-circuit characteristics taken into account. A model structure was selected based on the obtained jitter estimation error. The model complies with all the accuracy and speed requirements to calculations of the characteristics of a PLL-CDR system for a receiver block with data transmission bit rates above 3.125 Gbit/s.