Depending on whether you wish to implement the whole IrDA protocol and such like, for the physical layer side of things you may consider the Maxim MAX3130 which interfaces to a UART to allow for asynchronous communications as if it were RS232, to top that it will also generate RS232 level signals from either 3 or 5V. regards, SW. ____________________Reply Separator____________________ Subject: PIC-IrDA Author: pic microcontroller discussion list Date: 15/01/99 13:12 Anyone who has any experience with programming the PIC for IrDA applications ??? Glenn Goovaerts