Hello friends

I have to use/ program cmx865a integrated circuit with picbasic pro( for dtmf and fsk modem) but I dont know general algoritm this procedure.

Are there any person who used this chip?? Or Do you know general dtmf and fsk algorithm..

Please help me

cmx865a datasheet is below

http://rapidshare.com/files/86491252/cmx865A.pdf.html