Hi all, Original hardware IC provides 480MB/s and the core provides 25MB/s. 20MB/s is enough for me now thus I decided to give the core a go since XC3S500E will be on the board already with %~45 unused core. http://opencores.org/project,ft2232hcore I used it as a part a design in ISE 13.2 and it seems to occupy 2 cores (with 11inputs,+6outputs). It's a spartan . Anyone tried it ? I am trying to shrink it to 1 core do you think it is worth to effort ? Also XC3S500E supports 620Mb/s per I/O, thus achieving 480Mb/s seems to be possible to me ? Have a nice day. Yigit --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .