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12L stackup

Sniper2 , 10-03-2024, 05:14 PM
No matter what i do i cant get a nice stack up on 12 layers with 2 power layers ( unless stackup is asymmetric )
Any tips or guides?
How bad would it be to have 2 signal layers next to each other? LVDS and RMII , there would be some overlap but i can minimise that
corlas , 10-03-2024, 06:53 PM
to be honest, people are scared of using 2 signal layers next to each other, If you know what you are doing and you are careful, it will be fine. You can also make them signal/GND or signal/PWR.

You can't have the ideal stackup every time.
Sniper2 , 10-03-2024, 07:05 PM
well i never had problems but i was allwas very carefull and i mostly worked with 4-6 layers up to now
Robert Feranec , 10-07-2024, 04:40 PM
i have used two neighbor signal layers number of times, no problems. Ideally, route one horizontally and the other one vertically. Also, if possible keep bigger distance between them than is the distance to their reference planes.
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