Mervinï You may try the IO Designer from MentorGraphics. This tool can tell you what is the optimization for PCB layout, and can communicate the constrain file with your FPGA design tool. And you may ask for help/demonstration from local Mentor AE. Good luck! Shaopeng AE Consultant Mentor Graphics Electronic Technology Co., Ltd. ÂTel:Â +86-10 - 5930 4050 Cell:Â +86-136 1105 7707 Fax:Â +86-10-6808 0319 E-mail: peng_shao@xxxxxxxxxx Address: RM1512, CanWay Building, No.66 NanLiShi Lu, Beijing, China 100045 -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Mervin J Sent: 2012å10æ11æ 22:12 To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] I/O Planning for DDR3 Hi, I am working with the I/O planning of DDR3 interface in FPGA Design. I was not able to get good reference for I/O planning in collaboration with timing Analysis and also the parameters to considering during this planning to have better tradeoff between the PCB designer and FPGA Designer. Please suggest some idea or reference. Thanks, Mervin J ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu