Can somebody give me a flowchart to proper initialize the MT8880 chip and sending some DTMF data ?
I must mention I've read and re-read the datasheet but the chip isn't work at all.

I don't quite understand how exactly to generate a dtmf tone, with variable lenght ( my lenght, not standard 50mS ), in other words to ON/OFF a dtmf digit with this chip, controlled by controller.

Any help apreciated,
eddy@hcv.ro