Jitter has been used to evaluate each link component's performance and to relate it to the overall link performance. Although a lot of studies have been made on TX jitter, its measurement methods, lossy channel characteristic and equalization techniques by TX and RX, there has not been much discussion on RX jitter. To address this issue, we discuss RX jitter here. First, we discuss BER measurement of high speed serial link system as its performance figure of merit, and the corresponding behavior-level simulation for which RX jitter is used. Second, we discuss RX jitter model, which is considered as the break down into the jitter components, and is closely related to the measurement method. Then, we discuss how to measure RX jitter. Signal source must inject well-calibrated PJ, or RX's signal detection timing by the recovered clock must be programmable with high resolution and high accuracy over the consecutive bits boundary. BER is to be measured with several different amounts of PJ, and the resulting (PJ, BER) data are processed to obtain (DJ, RJ) based on dual-Dirac model. In the end, we discuss how RX jitter is related to RX jitter tolerance, which is usually tested to evaluate or verify the RX performance.
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