FreeLists / si-list / [SI-LIST] Power plane coupling

[Ludovic Levieil <ludovic.levieil@xxxxxxxxxxx>]

Hello All,
In my current board design I have the following stack up:

    .......
---------------- GND (solid plane)
------ ----- --- VCC1 (splitted plane)
--- ----- ------ VCC2 (splitted plane)
---------------- GND (solid plane)
   .......

4 mils separate GND and VCC planes
5 mils separate VCC1 and VCC2 planes

Both VCC planes are splitted in different power domains and I am wondering 
:
        - if having two coupled VCC planes is good/acceptable when 
thinking about noise ??
        - if there is a problem in having one power domain on on plane 
overlapping at least  two power domains on the other plane ??

Thanks

Ludovic Levieil 

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