Patent ID: 6467043
Filing Date: 2002-10-15
Classification: G11C,H04L

Abstract:
A computer system comprising:a memory device adapted to furnish a strobe signal having an edge and at least one data signal having an eye in which said at least one data signal indicates a bit of data; a first circuit comprising a first delay line to introduce a delay to the strobe signal to align the edge within the eye and comprising at least one additional delay line adapted to receive a pulse signal separate from the strobe signal, the first circuit being adapted to determine whether the edge is outside of a window of time located inside the eye by measuring a time for the pulse signal to propagate through said at least one additional delay line; a second circuit coupled to the first circuit to adjust the delay to realign the edge within the eye when the first circuit indicates the edge is outside of the eye; and a memory interface coupled to the delay circuit to use the delayed strobe signal and the data signal to capture the data.