Hi everybody, I have a question about the ground and power planes and signal layers that I must use on my printed circuit board.
This board mainly consists of a virtex 2000 part ( FG1156 ball grid array,XCV2000E). I have followed the "xilinx board routability" guidelines and accordingly the board has six signal layers . But I don't know how many ground and power planes I will need ; and where in the stack they should be placed with respect to the signal layers ? The board uses the following voltages : 3.3 Volts : LVTTL I/O's of the FPGA 1.8 Volts : FPGA core voltage 5.0 Volts : voltage required by other devices like the oscillator etc Will the presence of different voltages necessitate the use of different power planes for each voltage ? Moreover, this board involves upto 544 (potentially) simultaneously switching signals ? Will this affect the ground and power planes ? I'd really appreciate any suggestions... thanks and regards Anand Kulkarni * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
