1. A method to model behavior of an asynchronous interface, the method comprising: generating, by a delay generator, a first pattern of skews for a number of bit lines of the asynchronous interface; applying, by a delay applicator, the first pattern of skews to bits associated with the number of bit lines during a time interval; applying, by the delay applicator, a second pattern of skews to subsequent bits associated with the number of bit lines after the time interval; counting clock cycles of the time interval and resetting the time interval upon transmission of a test pattern of bits; and determining a skew pattern between the number of bit lines based upon comparison between bits of a test pattern and a pattern of received bits.