Patent ID: 7219269
Filing Date: 2007-05-15
Classification: G01R

Abstract:
1. An apparatus for responding to each edge of an input strobe signal by generating a corresponding edge in each of first and second strobe signals, wherein corresponding edges in the first and second strobe signals are separated by a target delay referenced by input data, the apparatus comprising: a first multiplexer for receiving the input strobe signal and the first and second strobe signals, and for providing any one of the input, first and second strobe signals selected by first selection control data as a first multiplexer output signal; a first circuit for generating the first and second strobe signals in response to the first multiplexer output signal such that each edge in the first multiplexer output signal subsequently produces a corresponding edge in the first and second strobe signals, with corresponding edges in the first and second strobe signals being separated in time by a programmable delay set by delay control data; and a control circuit receiving the input data and the first multiplexer output signal for supplying the first selection control data to the first multiplexer and for supplying the delay control data to the first circuit.