Skew compensation for a stacked die

A method, comprising:

• activating, at a first one of a plurality of first times, a counter of a first integrated circuit die;
• wherein the counter is set to count to a threshold number;
• sending, by the first integrated circuit die, a first one of a plurality of first pulses from the first integrated circuit die to a second integrated circuit die via an interposer;
• returning, at a first one of a plurality of second times, a first one of a plurality of second pulses from the second integrated circuit die to the first integrated circuit die via the interposer;
• sending a second one of the plurality of first pulses at a second one of the plurality of first times;
• returning, at a second one of the plurality of second times, a second one of the plurality of second pulses from the second integrated circuit;
• determining a difference;
• wherein the difference is an elapsed time either between (a) the first one of the plurality of first times and a last one of the plurality of second times divided by the threshold number, or (b) a sum of each of the plurality of first times minus a corresponding one of the plurality of second times divided by the threshold number;
• converting the difference for adjustment of a parameter of the first integrated circuit die;
• and
• adjusting the parameter of the first integrated circuit die responsive to the difference.

A method, comprising:

• coupling a particular one of a first plurality of integrated circuit dies and a particular one of a second plurality of integrated circuit dies to a particular one of a plurality of interposers, wherein each of the plurality of interposers has different configurations with different path delays;
• self-adjusting a parameter of the particular one of the first plurality of integrated circuit dies based on path delays of the particular one of the plurality of interposers that is selected;
• wherein the particular one of the first plurality of integrated circuit dies comprises an information generator and a signal delay compensator;
• wherein the information generator performs steps of:
• determining a first delay value for a first path of the particular one of the plurality of interposers between the particular one of the first plurality of integrated circuit dies and the particular one of the second plurality of integrated circuit dies;
• determining a second delay value for a second path of the particular one of the plurality of interposers between the particular one of the first plurality of integrated circuit dies and the particular one of the second plurality of integrated circuit dies;
• and
• determining a difference between the first delay value and the second delay value to obtain a path delay of the path delays;
• and
• wherein the signal delay compensator receives the difference and performs the step of the self-adjusting of the parameter of the particular one of the first plurality of integrated circuit dies to reduce the difference.