Tool for Stratix IV GX and GT Devices

The high-speed communication link design toolkit (HST) jitter and bit error rate (BER) estimator tool is a statistical behavior model-based simulation tool that estimates the jitter and BER performance for high-speed links. You can use the HST jitter and BER estimator tool for link jitter and BER estimation, optimization, testing, and validation. This application note describes the technologies and capabilities of the HST jitter and BER estimator tool. For an HSIO link, the dominant contributor to system BER is the jitter from all the subsystems of the link, including the TX, RX, and channel. This application note describes the theory and methodology that provides answers to the following questions: What is the relationship between the BER and the jitter from each of the link subsystems? How to estimate one of the link’s subsystem jitter value if the overall BER and other subsystems ’ jitter values are known?