Hi I need to know that how can I have serial to USB conversion. I am working on C-165 which has serial port. But i want to develop a USB communication with that. If any one know please let me know. Bye
"serial to USB conversion" USB is serial - what do you think the 'S' stands for??!! I presume you actually mean "RS232 to USB" or similar? This is a job for a dedicated chip; eg, see http://www.ftdichip.com/ and search here for "FTDI" - they've been mentioned a few times before. You could also try the Device Database for processors with on-chip USB
You should look at the C165UTAH or C161U device. Both have USB peripherals on-chip. Infineon also offers driver frame work in source code. For chip debugging you may use Keil ULINK (http://www.keil.com/ulink) since both devices offer OCDS interface too.