Patent ID: 8238176

Claim:
An apparatus, comprising: a terminal; and a pull-up path coupled to the terminal, the pull-up path including: a plurality of pull-up driver lines for driving the terminal to a first logic state responsive to a pull-up enable signal; a plurality of pull-up phase mixers coupled to at least a first subset of the pull-up driver lines, each pull-up phase mixer being operable to receive the pull-up enable signal and a delayed pull-up enable signal derived from the pull-up enable signal and generate a signal on the associated pull-up driver line having a first configurable delay with respect to the pull-up enable signal by mixing the pull-up enable signal and the delayed pull-up enable signal; and a pull-down path coupled to the terminal, the pull-down path including: a plurality of pull-down driver lines for driving the terminal to a first logic state responsive to a pull-down enable signal; and a plurality of pull-down phase mixers coupled to at least a second subset of the pull-down driver lines, each pull-down phase mixer being operable to receive the pull-down enable signal and a delayed pull-down enable signal derived from the pull-down enable signal and generate a signal on the associated pull-down driver line having a second configurable delay with respect to the pull-down enable signal by mixing the pull-down enable signal and the delayed pull-down enable signal.