Efficient calibration of a data eye for memory devices

摘要

A system and method for efficient data eye training reduces the time and resources spent calibrating one or more memory devices. A temporal calibration mechanism reduces the time and resources for calibration by reducing the number tests needed to sufficiently determine the boundaries of the data eye of the memory device. For one or more values of the voltage reference, the temporal calibration mechanism performs a minimal number of tests to find the edges of the data eye for the hold and setup times.

主权项

1. A computer-implemented method executed by at least one processor for calibrating a memory device to determine a data eye for a data strobe signal, the method comprising:
for each value of a reference voltage stepping a number of tests toward a first edge of the data eye beginning at a first suitable start time near the first edge of the data eye, and stepping a number of tests toward a second edge of the data eye beginning at a second suitable start time near the second edge of the data eye; and wherein stored edge values from a previous test are used for the first suitable start time and the second suitable start time.