i want to use a modem for send data from phone line to pc ; please advise me firstly which ic i can use for modem and how can control it from micro
"please advise me firstly which ic i can use" Try these for starters: http://www.tdc.co.uk/modems/index.htm http://www.multitech.com/PRODUCTS/~Modems/Embedded/ http://www.silabs.com/products/ "how can control it from micro" Look at the data sheets, application notes, etc on those sites.
you can perhaps hook up a standard commercially vailable modems to your microcontroller/PC & use AT commands to make it respond as per your requirements. i can provide u attachments of standard AT commands if u mail me to lionkinghere@yahoo.com with subject line "send AT comm attach" . good luck,