Head Unit And Liquid Ejecting Apparatus

A liquid ejecting apparatus comprising:

• a head unit including
• a printhead that ejects a liquid in accordance with a drive signal, and
• a head controller that receives input of a drive control signal and controls the ejection of the liquid from the printhead;
• and
• a control unit that controls the head unit, wherein the head controller includes
• a storage circuit that stores a plurality of pieces of waveform information,
• a waveform selection circuit that selects one of the plurality of pieces of waveform information as drive waveform information in accordance with one of a plurality of waveform information tables and the drive control signal,
• a drive signal output circuit that outputs the drive signal corresponding to the drive waveform information selected by the waveform selection circuit, and
• a detection circuit that detects a state of at least one of the printhead or the head controller, and
• the waveform selection circuit
• selects first drive waveform information as the drive waveform information in accordance with first drive information as the drive control signal and a first waveform information table among the plurality of waveform information tables, and
• selects second drive waveform information different from the first drive waveform information as the drive waveform information in accordance with the first drive information and a second waveform information table among the plurality of waveform information tables.