Dear All,
I need some designing help regarding internal layer of PCB. Is that okay to make ground the unrouted polygon area of a PCB like follow ? I need to do this to make correct impedance of another layer routing traces.
Are there any impact to this layer traces if I ground polygon area ?eter
Regards,
Peter.
Hi Peter
yes it is okay to make ground, in general ground recommendations are described in
i.MX6 System Development User’s Guide sect.3.6.9 Ground plane recommendations
and Figure 3-27. Good layout GND plane detail
https://www.nxp.com/docs/en/user-guide/IMX6DQ6SDLHDG.pdf
Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
Hi igorpadykov
Many thanks for your reply.
But that section (3.6.9) is talking about different ground plane. Am I correct ?
But here I meant un routed area (Polygon area in ddr memory layout) Is that okay to make those polygon area to ground ?
Regards,
Peter.
Hi Peter
grounding unrouted area in the same layer also recommended,
it improves ESD and radiated emissions.
Best regards
igor