[SI-LIST] six layer, eight layer, other
- From: "calaf_calaf_calaf" <calaf_calaf_calaf@xxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Mon, 05 Jul 2004 11:56:59 -0000
Hi everyone:
I am trying a stack like this:
1. signal
2. gnd
3. power & signal
4. gnd
5. power 3,3
6. signal
but I have many different powers and signals so it is hard to carried
it out. The worst may be that it is tough to set 3.3V 2.5 and 1.2V in
only two planes because all of them affect a BGA FPGA. Maybe it is
necessary 8 layers, for example:
1. signal
2. gnd
3. power 1.2V, 1.6V, signal
4. signal
5. power 2.5V, 5, signal
6. gnd
7. power 3.3
8. signal
What do you think?
I will thank you any help
Thanks and best regards
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