Patent ID: 6298465
Filing Date: 2001-10-02
Classification: G01R

Abstract:
An apparatus for automatic skew calibration of a synchronous transceiver, comprising:a plurality of input registers, each input register having a plurality of inputs and outputs, at least one output of each said input register connectable to at least one input pin of a device under test, said input registers latching transmitted signals;a plurality of output registers, each output register having a plurality of inputs and outputs, at least one input of each said output register connectable to at least one output pin of said device under test, said output registers latching signals received from said device under test;a main clock for generating a main clock signal and being connectable to at least one input pin of said device under test;a reference clock for generating a reference signal for calibrating the output registers; said reference clock being associated with said main clock; anda first set of phase shift means associated with said plurality of input registers, for the relative alignment of the input registers' timing within the plurality of input registers.