One-sided transmitter equalization

An apparatus comprising:

• means for driving a communication channel according to an input signal received at the apparatus, including a pullup transistor in each of a plurality of driver segments that is configured to couple the communication channel to a first voltage rail when the input signal is in a first signaling state;
• means for equalizing signals transmitted over the communication channel, including at least one equalizer segment configured to provide deemphasis when the input signal transitions to the first signaling state;
• means for generating a precursor signal by delaying the input signal;
• and
• means for enabling the at least one equalizer segment when the precursor signal is in a second signaling state.

A method for equalizing a data signal transmitted over a communication channel, comprising:

• driving the communication channel according to an input signal provided to a plurality of driver segments, each driver segment including a pullup transistor that is configured to couple the communication channel to a first voltage rail when the input signal is in a first signaling state;
• causing at least one equalizer segment couple the communication channel to the first voltage rail when a pullup transistor in the at least one equalizer segment is turned on;
• generating a precursor signal by delaying the input signal;
• and
• providing the precursor signal to a logic circuit that is configured to generate an enabling signal that enables the at least one equalizer segment to be turned on when the precursor signal is in a second signaling state.