Single power supply can operate from 2.2V to 6.4V (in this range, user can set Rosc as a fixed value). The total voice duration is about 3.5, 7, 10.5, 14, 17.5, 21, 24.5, 28 and 35 seconds that can be partitionedup to 32 voice_sections. Each voice_section length is flexible. Besides, there are 4 end-address points toselect for each voice_sections. Voice length can be individually up to 3.5, 7, 10.5, 14, 17.5, 21, 21, 21 and 21 seconds, and voice+mutelength can be individually up to 21 seconds at 6kHz sample rate for each voice_section. Two pairs ofSYNC signal can be edited into each voice by PowerIO editor (4 Syncs for IO1 and O2). Total 128 voice_steps are available for 32 pairs of sub_table. Each pair consists of one Start sub_tableand one Loop sub_table. The number of voice_step for each sub_table is flexible, but maximum is 128.For each voice_step, it can specify one voice_section, playback speed and IO1 and O2 output enableoptions if IO1 and O2 are set as output. Besides, in voice_step there are also other selections of theEndMark, Retrigger/Irretrigger Invert and Jumping/Looping instruction. In each voice_section there are maximally 4 EndMark points of voice+Mute and user can specify oneEndMark in voice_step. When IC meets the EndMark, it will stop playing voice and execute the nextaction. There are total 128 EndMarks for 32 voice_sections except AM9AD003D is only 64 EndMarks. Ifcooperating with different play speed, it can be applied in Voice Melody application.