Digital-analog hybrid transmitter equalizer for multi-valued signaling

High-speed data transmission over electric wiring in a VLSI system is achieved by employing equalization circuitry for waveform shaping. This letter presents a novel transmitter that incorporates waveform shaping techniques especially for multi-valued signaling. The combination of digital and analog equalizers and adjustment of the digital parameter can improve the waveform distortion of rising and falling edges. Simulation and experimental results of multi-valued data transmission are shown to demonstrate the feasibility of the proposed transmitter, which is capable of controlling the received waveforms flexibly and improve the signal integrity.