[SI-LIST] Split planes

From: "Roberto Carretta" <rcarrett@xxxxxxxxxxxxx>
To: Si-list@xxxxxxxxxxxxx
Date: Mon, 4 Mar 2002 16:44:09 +0100

Hi all,

I'm investigating two different stackup configuration for a 14 layer board:

Stackup 1 (last 8 layers):

Layer 8 - GND
L9   - Power (split plane)
L10         - signal
L11  - signal
L12  - GND
L13  - signal
L14  - signal (BOTTOM)

Stackup 2

Layer 8 - GND
L9   - signal
L10         - Power (split plane)
L11  - signal
L12  - GND
L13  - signal
L14  - signal (BOTTOM)

I can't move GND layer 8, the only variable is the position of the splitted 
power plane.
Which is the best solution?
Routing critical nets on layers 9 and 11 of stackup 2, is splitted power plane 
a big problem or the ground planes 8 and 12
minimize split plane influence? Or is preferable stackup 1, with ground plane 
adjacent to the splits?

Thanks in advance.

Roberto Carretta.


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[SI-LIST] Split planes

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