We are considering to divide the region into two by using the memory bank function and increase the number of phrases. We think that switching of SEL0 pin is necessary before PLAY command transmission. (SEL1 pin is directly connected to GND.) Please show us the each switching timings of 1 phrase playback and continuous playback.
In the case of "1 phrase playback", there is no problem if you set SEL0 before PLAY command input. As to the memory bank function, you can switch SEL0 when sound is in stop. While the sound playback, after playback ended (BUSYB turns from "L" to "H"), they will be SEL0 switch and PLAY command input. From the BUSYB is "H" to next sound playback of in that interval, it will be no sound time. Please store the phrases played continuously into the same bank. The memory bank function should be powered up by previously inputting PUP command according to the number of the memory banks you want to use.
