Stmicroelectronics S.r.l.

Franceso Cretti

Nuccio Villa

A fully digital phase aligner includes a control loop acting upon a delay line comprising at least a cascade of delay cells, each cell being individually configurable to produce one of two selectable propagation delays as a function of the logic state of a respective digital control signal. This is done by way of a shift register including a number of latches equal to the number of the cells of the delay line. An output tap of each latch of the shift register controls a respective delay cell of the delay line. A digital state machine in the control loop prevents any undesired oscillations.

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Milan, Italy

Franceso Cretti