Patent ID: 7233170
Filing Date: 2007-06-19
Classification: H03K,H04L

Abstract:
1. A system for adjusting the timing skew of a plurality of differential data channels comprising: control circuitry for generating a channel select signal, an input data select signal and first and second programmable delay signals, wherein the first and second programmable delay signals are adjusted in response to a phase error feedback signal; driver circuitry receiving first and second data signals and a clock signal and generating first and second delayed drive signals in response to the input data select signal and the first and second programmable delay signals; a first transmission line channel coupling the first delayed drive signal to a first input of a differential receiver; a second transmission line channel coupling the second delayed drive signal to a second input of the differential receiver; and receiver circuitry receiving the first and second delayed drive signals arriving at the first and second inputs of the differential receiver and generating the phase error feedback signal.