PROBABILITY-BASED CAPTURE OF AN EYE DIAGRAM ON A HIGH-SPEED DIGITAL INTERFACE

An eye diagram is generated for a digital interface, such as a Serializer/Deserializer (SerDes) interface. A probability map is captured by stepping through a fixed sequence of phase and reference voltage levels and counting a number of highs or lows. The switching of phase includes merely increasing the phase difference rather than performing complex phase/data analysis. The probability map can then be used to generate an eye diagram through simple differentiation. For example, the differentiation between various pixel locations in the probability map can be used to yield the edges of the eye in an eye diagram. The standard Serdes parameters can then be extracted from the eye diagram. The parameters can then be used to determine if the serial connection is problematic.